显示并非所有的代码路径都有返回值,求大神帮忙,万分感谢 [问题点数:20分]

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路径代码都有返回值"">help!"并非所有的路径代码都有返回值"
提示:并非所有的<em>路径</em><em>代码</em><em>都有</em><em>返回值</em>rn<em>代码</em>如下:rnpublic DataSet GetDataSet (string strSql)rn rn SqlConnection = Getstr();rn tryrn rn SqlConnection.Open();rn rn catchrn rn SqlConnection.Close();rn rn rnrn tryrn rn DataSet SqlDs = new DataSet();rn SqlDataAdapter SqlDa = new SqlDataAdapter(strSql,SqlConnection);rnrn SqlDa.Fill(SqlDs);rnrn return SqlDs;rn rn catchrn rn SqlConnection.Close();rn rn rn
助:并非所有的代码路径都有返回值
我定义了一个调用数据库的函数,<em>返回值</em>是一个SqlDataReader,在try语句中返回,在catch语句中用信息框的形式输出错误信息。rn但编译后提示我并非所有的<em>代码</em><em>路径</em><em>都有</em><em>返回值</em>,请问catch语句中也要有return 吗?
菜鸟教,并非所有的代码路径都有返回值
[code=csharp] public string GetNextStatus() rn string StrSQL;rn string strTemp;rn SqlConnection conn = new SqlConnection(Getconn());rn conn.Open();rn SqlCommand cmd = new SqlCommand();rn cmd.Connection = conn;rn StrSQL = "SELECT NEXTSTATUS FROM TB_LWS WHER WHERE ";rn StrSQL = StrSQL + "NEXTSTATUS IN ('030','040','050') and LWSEvent = @LWSEvent";rn cmd.CommandText = StrSQL;rn cmd.Parameters.Add("@LWSEvent", SqlDbType.Char, 3).Value = LWSEvent;rn SqlDataReader dr = cmd.ExecuteReader();rn tryrn rn dr.Read();rn if (dr.HasRows == false)rn rn dr.Close();rn return "030".ToString();rn rn strTemp = dr["NEXTSTATUS"].ToString();rn if (strTemp.Equals("030".ToString()))rn rn dr.Close();rn return "040".ToString();rn rn if (strTemp.Equals((string)"040"))rn rn dr.Close();rn return "050".ToString();rn rn rn catch (Exception ex)rn rn Console.WriteLine(ex.Message);rn throw;rn rn finally rn //dr.Close();rn conn.Close();rn rn [/code]rn总是提示“并非所有的<em>代码</em><em>路径</em><em>都有</em><em>返回值</em>”rn看了半天了,没找出原因来。
新手 高手 并非所有的代码路径返回值
public TreeNode getNode_byLevelOne(string text)rn rn rn foreach (TreeNode node in this.Nodes)rn rn if ((node.Text.ToString().Trim()).ToLower() == (text.Trim().ToString()).ToLower())rn rn return node;rn rn rn rn rnrn错误 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em> rnrn我只知道 少了<em>返回值</em> 就是不知道 如何修改<em>代码</em> <em>求</em>高手
并非所有的路径返回值
public SqlDataReader GetDataSetByStr(string str)rn rn tryrn rn objSqlCon.Open();rn objSqlCom = new SqlCommand(str, objSqlCon);rn objSqlCom.CommandType = CommandType.Text;rn objSqlDataReader = objSqlCom.ExecuteReader();rn return objSqlDataReader;rn catch (Exception e2)rn rn Console.WriteLine(e2.Message);rn rn finally rn rn if (objSqlCon != null)rn rn objSqlCon.Close();rn rn rn rnrnrn错误提示:BookManage。DataAccess.GetDataSetByStr(string ) 并非所有的<em>路径</em>都<em>返回值</em>
并非所有代码路径都有返回值
“并非所有<em>代码</em><em>路径</em><em>都有</em><em>返回值</em> ” 请问有谁知道这是什么意思 Asp.net(c#)环境中 写个方法rnpublic static bool IsnNumber(string strCheck)rn rn char[] charChecks = strCheck.ToCharArray();rn int i=0;rn foreach (char charCheck in charChecks)rn rn i++;rn if (!(((short)charCheck > 47) && ((short)charCheck < 58)))rn rn return false;rn rn rn if(i<11)rn rn return true;rn rn rn编译是报“并非所有<em>代码</em><em>路径</em><em>都有</em><em>返回值</em>“不明白是怎么回事
错误:并非所有的代码路径返回值
各位前辈 小弟用C#编写了如下<em>代码</em>:rnusing System;rnusing System.Collections.Generic;rnusing System.Text;rnrnnamespace ConsoleApplication1rnrn class Programrn rn public static bool asdf()rn rn for ( int i = 0 ; i < 30 ; i++ )rn rn if ( i == 29 )rn return true;rn elsern return false;rn rn rn static void Main( string[] args )rn rnrn asdf();rn Console.ReadKey();rn rn rnrnrn结果提示 错误“ConsoleApplication1.Program.asdf()”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>rn俺知道这意思说 俺自定义的函数asdf() 有个别情况没有设<em>返回值</em> 但是各位请看上面的<em>代码</em> 可返回的情况应该已经考虑全面了才对呀 除了满足if返回true之外 其他情况都返回falsernrn这段<em>代码</em>是俺编程时发现这个问题后 特意编这段简单的<em>代码</em>来测试的 俺发现把用if判断返回情况嵌套到for循环里就会出现这种情况 如果把for注释掉 只留下if else这几行 程序可以正常运行rnrn俺用C++编了同样的<em>代码</em>进行测试 结果却是正常通过 而且<em>返回值</em>也是正确的rn俺使用的是 visual studio 2005rnrn有前辈知道到底是什么原因么???
新手解,并非所有的代码路径返回值
public bool ExistProduct(DataTable cart)rnrn string sqlconnstr = ConfigurationManager.ConnectionStrings["ConnetionString"].ConnectionString;rn SqlConnection sqlconn = new SqlConnection(sqlconnstr);rn SqlCommand sqlcommand = new SqlCommand();rn sqlcommand.Connection = sqlconn;rn sqlconn.Open();rn sqlcommand.CommandText = "select * from Product";rn SqlDataReader sqldatareader = sqlcommand.ExecuteReader();rn while (sqldatareader.Read())rn rn foreach (DataRow dr in cart.Rows)rn rn if (dr["ProductName"].ToString().Equals(sqldatareader.GetString(1)))rn //若购物车中存在用户要购买的商品,则商品数量+1rn dr["Number"] = Convert.ToInt32(dr["Number"]) + 1;rn //将购物车保存到Session["Cart"]中rn Session["Cart"] = cart;rn Response.Redirect("");rn rn rn return true;rn rn sqlcommand = null;rn sqlconn.Close();rn sqlconn = null;rnrnrn提示错误 “ ExistProduct(System.Data.DataTable)”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>rn是什么原因怎么改呢?
请教,错误:并非所有的代码路径返回值
错误 1 “UserDao.GetLogin()”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>rn请问如何修改?rnpublic bool GetLogin()rn rn SqlConnection con = null;rn tryrn rn con = new SqlConnection(cs);rn SqlCommand cmd = con.CreateCommand();rn con.Open();rn cmd.CommandType = CommandType.StoredProcedure;rn cmd.CommandText = "WEB_Login";rn cmd.Parameters.Add("@userName", SqlDbType.VarChar, 50).Value = user.UserName;rn cmd.Parameters.Add("@userPwd", SqlDbType.VarChar, 50).Value = user.UserPwd;rn object o = cmd.ExecuteScalar();rn if (o != null)rn rn int iCount = Int32.Parse(o.ToString());rn if (iCount == 0)rn rn return true;rn rn elsern rn return false;rn rn rn rn finallyrn rn if (con != null)rn rn con.Close();rn rn rn
并非所有的代码路径返回值(在线等!)
这是什么意思呀?并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>
助 错误:并非所有的代码路径返回值
PublicMethod.ChangeFilePhy(string, string, string)”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>rnrn出错的是这句public string ChangeFilePhy(string fileName, string playFile, string imgFile)rnrn看到这句话 我第一反应就是 我这三个string fileName, string playFile, string imgFile没有返回,但是我的确有写返回,所以我不知道错在哪了,请各位指点我一下 附上<em>代码</em> rnDefault.aspx.csrn[code=csharp]using System;rnusing System.Data;rnusing System.Configuration;rnusing System.Web;rnusing System.Web.Security;rnusing System.Web.UI;rnusing System.Web.UI.WebControls;rnusing System.Web.UI.WebControls.WebParts;rnusing System.Web.UI.HtmlControls;rnusing System.IO;rnpublic partial class _Default : System.Web.UI.Pagernrn // 扩展名定义rn string[] strArrFfmpeg = new string[] "asf", "avi", "mpg", "3gp", "mov" ;rn string[] strArrMencoder = new string[] "wmv", "rm", "rmvb" ;rn protected void Page_Load(object sender, EventArgs e)rn rn rn //rn protected void btnUpload_Click(object sender, EventArgs e)rn rn string upFileName = "";rn if (this.FileUpload1.HasFile)rn rn string fileName = PublicMethod.GetFileName(this.FileUpload1.FileName);// GetFileName();rn if ((string)Session["file"] == fileName)rn rn return;rn rn upFileName = Server.MapPath(PublicMethod.upFile + fileName);rn this.FileUpload1.SaveAs(upFileName);rn string saveName = DateTime.Now.ToString("yyyyMMddHHmmssffff");rn string playFile = Server.MapPath(PublicMethod.playFile + saveName);rn string imgFile = Server.MapPath(PublicMethod.imgFile + saveName);rn //System.IO.File.Copy(Server.MapPath(PublicMethod.playFile + "00000002.jpg"), Server.MapPath(PublicMethod.imgFile+"aa.jpg"));rn PublicMethod pm = new PublicMethod();rn string m_strExtension = PublicMethod.GetExtension(this.FileUpload1.PostedFile.FileName).ToLower();rn if (m_strExtension == "flv")rn //直接拷贝到播放文件夹下rn System.IO.File.Copy(upFileName, playFile + ".flv");rn pm.CatchImg(upFileName, imgFile);rn rn string Extension = CheckExtension(m_strExtension);rn if (Extension == "ffmpeg")rn rn pm.ChangeFilePhy(upFileName,playFile,imgFile);rn rn /* else if (Extension == "mencoder")rn rn pm.MChangeFilePhy(upFileName, playFile, imgFile);rn rn InsertData(this.txtTitle.Text, fileName, saveName);*/rn Session["file"] = fileName;rn rn rn //rn private string CheckExtension(string extension)rn rn string m_strReturn = "";rn foreach (string var in this.strArrFfmpeg)rn rn if (var == extension)rn rn m_strReturn = "ffmpeg"; break;rn rn rn /* if (m_strReturn == "")rn rn foreach (string var in strArrMencoder)rn rn if (var == extension)rn rn m_strReturn = "mencoder"; break;rn rn rn */rn return m_strReturn;rn rnrn[/code]rnrnPublicMethod.csrn[code=csharp]rnusing System;rnusing System.Data;rnusing System.Configuration;rnusing System.Linq;rnusing System.Web;rnusing System.Web.Security;rnusing System.Web.UI;rnusing System.Web.UI.HtmlControls;rnusing System.Web.UI.WebControls;rnusing System.Web.UI.WebControls.WebParts;rnusing System.Xml.Linq;rnusing System.IO;rnusing System.Diagnostics;rnrn/// rn///PublicMethod 的摘要说明rn/// rnpublic class PublicMethodrnrn public PublicMethod()rn rn //rn //TODO: 在此处添加构造函数逻辑rn //rn rn public static string ffmpegtool = ConfigurationManager.AppSettings["ffmpeg"];rn public static string mencodertool = ConfigurationManager.AppSettings["mencoder"];rn public static string mplayertool = ConfigurationManager.AppSettings["mplayer"];rn public static string upFile = ConfigurationManager.AppSettings["upfile"] + "/";rn public static string imgFile = ConfigurationManager.AppSettings["imgfile"] + "/";rn public static string playFile = ConfigurationManager.AppSettings["playfile"] + "/";rn //文件图片大小rn public static string sizeOfImg = ConfigurationManager.AppSettings["CatchFlvImgSize"];rn //文件大小rn public static string widthOfFile = ConfigurationManager.AppSettings["widthSize"];rn public static string heightOfFile = ConfigurationManager.AppSettings["heightSize"];rn // // //获取文件的名字rn public static string GetFileName(string fileName)rn rn int i = fileName.LastIndexOf("\\") + 1;rn string Name = fileName.Substring(i);rn return Name;rn rn //获取文件扩展名rn public static string GetExtension(string fileName)rn rn int i = fileName.LastIndexOf(".") + 1;rn string Name = fileName.Substring(i);rn return Name;rn rn //rn #region //运行FFMpeg的视频解码,(这里是绝对<em>路径</em>)rn /// rn /// 转换文件并保存在指定文件夹下面(这里是绝对<em>路径</em>)rn /// rn /// 上传视频文件的<em>路径</em>(原文件)rn /// 转换后的文件的<em>路径</em>(网络播放文件)rn /// 从视频文件中抓取的图片<em>路径</em>rn /// 成功:返回图片虚拟地址; 失败:返回空字符串rn public string ChangeFilePhy(string fileName, string playFile, string imgFile)rn rn string ffmpeg = System.Web.HttpContext.Current.Server.MapPath(PublicMethod.ffmpegtool);rn if ((!System.IO.File.Exists(ffmpeg)) || (!System.IO.File.Exists(fileName)))rn rn return "";rn rn //获得图片和(.flv)文件相对<em>路径</em>/最后存储到数据库的<em>路径</em>,如:/Web/User1/00001.jpg rn // string flv_file = System.IO.Path.ChangeExtension(playFile, ".flv");rnrn //截图的尺寸大小,配置在Web.Config中,如: rnrnrn string filename = TransferVedio(upFile, playFile);rnrn string smallpic = CatchImg(upFile, imgFile);rnrnrn rnrn public string TransferVedio(string upFileName, string playFile)rn rn string ffmpeg = System.Web.HttpContext.Current.Server.MapPath(PublicMethod.ffmpegtool);rn string flv_file = System.IO.Path.ChangeExtension(playFile, ".flv");rnrn //截图的尺寸大小,配置在Web.Config中,如: rn //string FlvImgSize = VedioConvert.sizeOfImg;rnrn Process p = new Process();//建立外部调用线程 rn p.StartInfo.FileName = ffmpeg;//要调用外部程序的绝对<em>路径</em> rn p.StartInfo.Arguments = " -i " + "\"" + upFileName + "\"" + " -ab 56 -ar 22050 -b 500 -r 15 -s " + widthOfFile + "x" + heightOfFile + " " + "\"" + flv_file + "\"";rnrn p.StartInfo.UseShellExecute = false;//不使用操作系统外壳程序启动线程(一定为FALSE,详细的请看MSDN) rn p.StartInfo.RedirectStandardError = true;//把外部程序错误输出写到StandardError流中(这个一定要注意,FFMPEG的所有输出信息,都为错误输出流,用StandardOutput是捕获不到任何消息的...这是我耗费了2个多月得出来的经验...mencoder就是用standardOutput来捕获的) rn p.StartInfo.CreateNoWindow = true;//不创建进程窗口 rn //p.ErrorDataReceived += new DataReceivedEventHandler(Output);//外部程序(这里是FFMPEG)输出流时候产生的事件,这里是把流的处理过程转移到下面的方法中,详细请查阅MSDN rn p.Start();//启动线程 rn p.BeginErrorReadLine();//开始异步读取 rn p.WaitForExit();//阻塞等待进程结束 rn p.Close();//关闭进程 rn p.Dispose();//释放资源 rnrnrn if (System.IO.File.Exists(flv_file) && new FileInfo(flv_file).Length > 0)rn rn return flv_file.Substring(flv_file.LastIndexOf("\\") + 1);rn rn elsern rn return "";rn rnrnrn rnrn public string CatchImg(string fileName, string imgFile)rn rn string ffmpeg = System.Web.HttpContext.Current.Server.MapPath(PublicMethod.ffmpegtool);rn string flv_img = imgFile + ".jpg";rn string FlvImgSize = VedioConvert.sizeOfImg;rnrnrn Process p = new Process();//建立外部调用线程 rn p.StartInfo.FileName = ffmpeg;//要调用外部程序的绝对<em>路径</em> rn p.StartInfo.Arguments = @"-i " + "\"" + fileName + "\"" + " -y -f image2 -ss 08.010 -t 0.001 -s 352x240 " + "\"" + flv_img + "\"";rnrn p.StartInfo.UseShellExecute = false;//不使用操作系统外壳程序启动线程(一定为FALSE,详细的请看MSDN) rn p.StartInfo.RedirectStandardError = true;//把外部程序错误输出写到StandardError流中(这个一定要注意,FFMPEG的所有输出信息,都为错误输出流,用StandardOutput是捕获不到任何消息的...这是我耗费了2个多月得出来的经验...mencoder就是用standardOutput来捕获的) rn p.StartInfo.CreateNoWindow = true;//不创建进程窗口 rn //p.ErrorDataReceived += new DataReceivedEventHandler(Output);//外部程序(这里是FFMPEG)输出流时候产生的事件,这里是把流的处理过程转移到下面的方法中,详细请查阅MSDN rn p.Start();//启动线程 rn p.BeginErrorReadLine();//开始异步读取 rn p.WaitForExit();//阻塞等待进程结束 rn p.Close();//关闭进程 rn p.Dispose();//释放资源rnrnrn if (System.IO.File.Exists(flv_img) && new FileInfo(flv_img).Length > 0)rn rn return flv_img.Substring(flv_img.LastIndexOf("\\") + 1);rn rn elsern rn return "";rn rnrnrn rnrn rnrn #endregionrnrnrn[/code]rnrn
代码路径返回值"">提示:"并非所有的代码路径返回值"
运行时提示:"并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>" 不知道什么原因?请告诉给予帮助?谢谢!rnprivate User LoadOrder(SqlDataReader reader)rn rn tryrn rn User user = new User();rn user.UserId = Convert.ToInt32(reader["UserID"]); rn rn return user;rn rn catch (Exception e)rn rn e.ToString();rn rn rn//====================rn public class Userrn rn private int m_UserId;rn public User()rn rn //rn // TODO: Add constructor logic herern //rn rnrn public int UserIdrn rn get return m_UserId; rn set m_UserId = value; rn rn
并非所有的代码路径返回值.程序应该怎么改?
[code=C#][/code]rn public int CheckUser()rn rn if (this.tbxUserName.Text == "")rn rn MessageBox.Show("用户名不能为空!", "错误");rn rn else if (this.tbxPassWord.Text == "")rn rn MessageBox.Show("密码不能为空!", "错误");rn rn elsern rn string str = System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"];rn SqlConnection conn = new SqlConnection(str);rn SqlCommand cmd = new SqlCommand("Login", conn);rnrn cmd.CommandType = CommandType.StoredProcedure;rn SqlParameter UserName = new SqlParameter("@username", SqlDbType.VarChar, 50);rn UserName.Value = this.tbxUserName.Text;rn cmd.Parameters.Add(UserName);rnrn SqlParameter PassWord = new SqlParameter("@pwd", SqlDbType.VarChar, 50);rn UserName.Value = this.tbxPassWord.Text;rn cmd.Parameters.Add(PassWord);rnrn SqlParameter sp = new SqlParameter("@return", SqlDbType.Int, 4);rnrn sp.Direction = ParameterDirection.Output;rn cmd.Parameters.Add(sp);rnrn tryrn rn conn.Open();rn cmd.ExecuteNonQuery();rn conn.Close();rn int n = (int)(sp.Value);rn return n;rn rn catchrn rn return 0;rn rn rn rn private void button1_Click(object sender, EventArgs e)rn rn if (CheckUser() > 0)rn rn PicManager pic = new PicManager();rn pic.Show();rn this.Hide();rn rn elsern rn MessageBox.Show("用户名不能为空");rn rn
CS0161: “UpdatingDBDirectly.GetSelectedRecord()”: 并非所有的代码路径返回值
下面是问题所在相关<em>代码</em>,请各位大侠帮分析分析!rnprotected void btnEdit_Click( object sender, EventArgs e)rn rn int shipperID = GetSelectedRecord();rn string cmd = @"Update Shippers set CompanyName = '" +rn this.txtName.Text +rn "', Phone ='" + this.txtPhone.Text + "' where ShipperID = " + shipperID;rn UpdateDB(cmd);rn PopulateGrid();rn rn rn protected int GetSelectedRecord()rn rn int shipperID = -1;rn int index = GridView1.SelectedIndex;rn if (index != -1)rn rn DataKey key = GridView1.DataKeys[index];rn shipperID = (int)key.Value;rn return shipperID;rn rn rn protected void btnDelete_Click(object sender, EventArgs e)rn rn string cmd = @"delete from Shippers where ShipperID =" + GetSelectedRecord();rnrn UpdateDB(cmd);rn PopulateGrid();rn
C# 错误 并非所有的代码路径返回值
namespace WindowsFormsApplication1rnrn public partial class Form1 : Formrn rn string aaa = "";rn public Form1()rn rnrn InitializeComponent();rn rn rnrnrnrn public class bdMsgVerifyCodern rn public string vcToken get; set; //genimg字符rn public Image vcImg get; set; //验证码图片rnrnrn public static bdMsgVerifyCode Create(string cookie)rn rn bdMsgVerifyCode vc = new bdMsgVerifyCode();rn WebClient client = new WebClient();rn client.Headers.Add(HttpRequestHeader.Cookie, cookie);rn client.Headers.Add(HttpRequestHeader.Referer, "http://hi.baidu.com/msg/index?from=redirect&ct=21&cm=1&tn=bmSendMessage&un=");rn string html = client.DownloadString("http://hi.baidu.com/sys/file/getvcode?echoback=getVcodeDone&callback=bd__cbs__tppotb");rn int start = html.IndexOf("\"") + 1;rn int end = html.IndexOf("\"", start);rn vc.vcToken = html.Substring(start, end - start);rnrn byte[] imgbuf = client.DownloadData("http://hiup.baidu.com/cgi-bin/genimg?" + vc.vcToken);rn MemoryStream ms = new MemoryStream(imgbuf);rn vc.vcImg = Image.FromStream(ms);rn ms.Close();rn return vc;rn rn rn private void button1_Click(object sender, EventArgs e)rn rn bdMsgVerifyCode vc = bdMsgVerifyCode.Create("OPENPLATFORM_SP=cd9ea067da03_1297859249; BAIDUID=26D7E772BCC06F88A642088CC00B4584:FG=1; BDUSS=lEaW1pWG4zNTlWdWFabTM0REl2QlV6dTVhZzZ5QTQ4fmxBdmgwMGVLVVRTSU5OQVFBQUFBJCQAAAAAAAAAAAoakSd28J0KtrzLtc7Sz~HJ8b6tsqEAAAAAAAAAAAAAAAAAAAAAAADA2gV8AAAAAMDaBXwAAAAAuFNCAAAAAAAxMC4yMy4yNBO7W00Tu1tNaD; USERID=f5a7193b428710f975e52280af974cbdf14a; IM_old=0|gk8di8w0; _ML_ST=10%7Cgk88mm47");rn pictureBox1.Image = vc.vcImg;rn aaa = vc.vcToken;rnrn rn string Post(string url, string postdata)rn rn WebClient client = new WebClient();//实例化rn client.Encoding = Encoding.GetEncoding("gb2312");//设编码rn client.Headers.Add(HttpRequestHeader.Cookie, "BDUSS=3V1N1FFUzZONzczMHNXTFllR2dmbXBXSUFsfnRLZkE3eWZyNnVCSWgtcE5yNFJOQVFBQUFBJCQAAAAAAAAAAApRLgt28J0KtrzLtc7Sz~HJ8b6tsqEAAAAAAAAAAAAAAAAAAAAAAADA-kRzAAAAAMD6RHMAAAAAuFNCAAAAAAAxMC4yMy4yNE0iXU1NIl1NQ; BAIDUID=9F9ACD2A7322780D7A8E5A46110E71FB:FG=1; USERID=f5a7193b428710f975e52280af974cbdf14a; bdime=1; BAIDU_WISE_UID=wapp_1297574075498_625; BD_UTK_DVT=1; BDSP=6b63f6246a610c33f07281da6cbccc05df14242916a9b827d2c7db37349b033b5bb5c9ea15ce36d3d539b6003af33a87e950352ac65c10385343fbf2b2119313b07eca8065380cd7912397dda144ad345982b2b7d0a20cf431adcbef76094b36a8afe07d; BDSTAT=d11373f05ab307e2557617b68d1d366e05a28bf3b436afc36d310a55b019dca0; Hm_lvt_4d16ad3b9adade3b562e5f64c3a01c5d=1297842283125; _time_stamp_=2; BDLFONT=0; pop_lover_76f0b6bccbb5ced2cff1c9f1beadb2a19d0a=yes; badgePilot_th_76f0b6bccbb5ced2cff1c9f1beadb2a19d0a=yes; GUIDE_76f0b6bccbb5ced2cff1c9f1beadb2a19d0a=yes; NO_GUIDE_76f0b6bccbb5ced2cff1c9f1beadb2a19d0a=yes"); //加标头rn //其他标头client.Headers.Add(......................");rn client.UploadString("http://hi.baidu.com/msg/msg_dataSendmsgTalk", "top.spNoticeTpl.message.msg_subResult&bdstoken=43be208cdb81428dee062ea3710a78a8&strUname=asd&strContent=asd&spVcode=" + aaa + "&Code=" + textBox1.Text); //POSTrn rn rn private void button2_Click(object sender, EventArgs e)rn rn Post("http://hi.baidu.com/msg/msg_dataSendmsgTalk", "top.spNoticeTpl.message.msg_subResult&bdstoken=43be208cdb81428dee062ea3710a78a8&strUname=asd&strContent=asd&spVcode=" + aaa + "&Code=" + textBox1.Text);rn rn rn
C#程序提示:并非所有的代码路径返回值
protected int InsertNews(int value_id)rn rn string strCon = ConfigurationManager.ConnectionStrings["volenteerDBN"].ConnectionString.ToString();rn string strSql = "select * from News where NewsID='" + value_id + "'";rn SqlConnection con = new SqlConnection(strCon);rn con.Open();rn SqlCommand cmd = con.CreateCommand();rn cmd.CommandText = strSql;rn SqlDataAdapter sda = new SqlDataAdapter(cmd);rn DataSet ds = new DataSet();rn sda.Fill(ds, "information");rn DataList1.DataSource = ds;rn DataList1.DataBind();rn rn rn系统调试后说InsertNews(int)中并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>rn请问是怎么回事?
asp.net(C#)并非所有的代码路径返回值
public bool IsExist(string artNo1)n n string artNo;n List list_artNo = new List();nn foreach (GridViewRow rows in GridView1.Rows)n n artNo = rows.Cells[0].Text;n list_artNo.Add(artNo);n n foreach (string item in list_artNo)n n if (item==artNo1.ToString())n n return true;n n if (item != artNo1.ToString())n n return false;n n n
并非所有的代码路径返回值怎么解决
[code=C#]rn public DataView mybind()rn rn string s = System.Configuration.ConfigurationManager.AppSettings["strconn"];rn using (SqlConnection conn = new SqlConnection(s))rn rn string sel = "select * from art";rn conn.Open();rn SqlDataAdapter dr = new SqlDataAdapter(sel, conn);rn DataSet ds = new DataSet();rn dr.Fill(ds);rn grid.DataSource = ds;rn grid.DataBind();rn rn rn return;rn rn[/code]rn我把return 去掉提示rn“_Default.mybind()”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>rnrn加上returnrn提示有错需要一个类型可转换为“System.Data.DataView”的对象
并非所有的代码路径返回值??雅
public class brn rn public char connection(char[] str1,char[] str2)rn rn rn int i;rn for( i=0;i
解(并非所有的代码路径返回值)?????
[code=C#] private string timejia(string name, DataTable tt)rn rn TimeSpan tms = new TimeSpan();rn for (int i = 1; i < tt.Rows.Count;i++)rn rn if (tt.Rows[i][0].ToString() == name)rn rn DateTime time = Convert.ToDateTime(tt.Rows[i][12]);rn TimeSpan tmsall = new TimeSpan(time.Hour, time.Minute, time.Second);rn tms += tmsall;rn rn int timeH = tms.Days * 24 + tms.Hours;rn double timeM = Convert.ToDouble(tms.Minutes / 60.0);rn string all = "" + timeH + "" + "." + "" + timeM + "" + "小时";rn return all;rn rn [/code]rnrn错误提示:错误 3 “insert.timejia(string, System.Data.DataTable)”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em> E:\net\EXCEL\App_Code\insert.cs 62 20 E:\net\EXCEL\rnrnif 里面知识一直加!!rn到下面才返回一个 值。。。rnrn然后在别的地方接值。 可是不知道是怎么回事?????rn 在线等。。赶进度呢!!
新手问题:并非所有的代码路径返回值
public static int max(int x, int y)rn rn if (x > y)rn return x; rn else if (x < y)rn return y; rn else if (x == y)rn return 0; rn rn“ConsoleApplication1.MTool.max(int, int)”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em> rn我又哪里错了
代码路径返回值" 错在那里了?">"并非所有的代码路径返回值" 错在那里了?
rn[color=#FF0000]为什么总是报错误----- "并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>"[/color]rnrn public int GetNonResult(string sql) //返回ExecuteNonQuery()rn rnrn tryrn //从web.config中取得数据库连接字符串rn string SqlConnectionStr = System.Configuration.ConfigurationSettings.AppSettings ["SqlConnectionStr"];rn //创建数据库连接对象rn SqlConnection Sqlconn = new SqlConnection(SqlConnectionStr); rn Sqlconn.Open();rnrn //创建Command对像rn SqlCommand Sqlcomm = new SqlCommand(sql, Sqlconn);rn //执行命命令rn Sqlconn.Open();rnrn int i = Sqlcomm.ExecuteNonQuery();rn if (i > 0)rn rn return i;rn rn elsern rn return 0;rn rn Sqlconn.Close();rn rn catch (SqlException e)rn rn System.Web.HttpContext.Current.Response.Write("错误的原因是:" + e.Message);rn rn rn rn rn rn
并非所有的代码路径返回值 vb.net
我这个过程是这样,之后用一个按键下执行。rnFunction updateteacher() '将数据更新到数据库。rn MyConnection.Open()rn Tryrn MyCommand = New OleDbCommand("UPDATE teacher SET teachername ='" & Txtname1.Text & "',[password]='" & Txtpassword1.Text & "',coursesID='" & Txtcoursescode1.Text & "',grade='" & Combograde1.Text & "',class='" & Comboclass1.Text & "' WHERE teacherid = '" & txtuserid1.Text & "'", MyConnection)rn MyCommand.ExecuteNonQuery()rn Catch c As Exceptionrn MsgBox(c.ToString)rn End Tryrn MyConnection.Close()rn MyCommand.Dispose()rn End Functionrnrn我不明白这个是怎么回来,执行时提示:并非所有的<em>代码</em><em>路径</em>都<em>返回值</em> 。
代码路径返回值"">怎么错误了 "并非所有的代码路径返回值"
请大家帮我看一下函数怎么写错了,应该怎么修改呢? rn  public int Find() //错误并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>rn rn if(FrmQuitFind.s!=null)rn rn custds = findFacade.GetFindData(sql);rn tryrn rn custds = findFacade.GetFindData(sql);rn if(0 == custds.Tables[0].Rows.Count)rn rn return 0;rn rn rn rn elsern rn rn return 1;rn rn rn catch(Exception ex)rn rn QuickMessage.MsgInfo(ex.Message);rn rn rn rn============================================================rn if(s==1)rn rn this.DialogResult = DialogResult.OK;rn rn elsern rn this.DialogResult = DialogResult.None;rn rn rn rn
“并非所有的代码路径返回值”错误,
public static bool WriteFile(string strText,string strContent,string strAuthor) rnrn string yy=DateTime.Now.ToString("yyyy");rn string dd=DateTime.Now.ToString("dd");rn string mm=DateTime.Now.ToString("MM");rn string addtime=DateTime.Now.ToString();rnstring path = HttpContext.Current.Server.MapPath("/news/"+yy.ToString()+"/"+mm.ToString()+"/"+dd.ToString()+"/");rn Encoding code = Encoding.GetEncoding("gb2312");rn // 读取模板文件rn string temp = HttpContext.Current.Server.MapPath("/news/template/template.html");rn StreamReader sr=null;rn StreamWriter sw=null;rn string str=""; rn tryrn rn sr = new StreamReader(temp, code);rn str = sr.ReadToEnd(); // 读取文件rn rn catch(Exception exp)rn rn HttpContext.Current.Response.Write(exp.Message);rn HttpContext.Current.Response.End();rn sr.Close();rn rn rn string htmlfilename=DateTime.Now.ToString("yyyyMMddHHmmss")+".html";rn // 替换内容rn // 这时,模板文件已经读入到名称为str的变量中了rn str = str.Replace("$Title$",strText);rn str = str.Replace("$Content$",strContent);rn str = str.Replace("$Author$",strAuthor);rn str = str.Replace("$AddTime$",addtime);rnrn // 写文件rn if(!System.IO.Directory.Exists(path))rn rn System.IO.Directory.CreateDirectory(path);rn rn elsern rn tryrn rn sw = new StreamWriter(path + htmlfilename , false, code);rn sw.Write(str);rn sw.Flush();rn rn catch(Exception ex)rn rn HttpContext.Current.Response.Write(ex.Message);rn HttpContext.Current.Response.End();rn rn finallyrn rn sw.Close();rn rn return true;rn rn rnrn生成时出现以下错误rnD:\Hover\Conn.cs(141): “Hover.Conn.WriteFile(string, string,string)” : 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>rn是一个bool型生成html的函数,只是修改了按时间来生成文件夹目录,做了判断,以后就有这个错误了,这是怎么回事,错误是出在哪里呢
并非所有的代码路径返回值是是什么错误?
“qbase.DataQuery.DataGridPage.gfun_CreateData()” : 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>?rnICollection gfun_CreateData()rnrn ……rn DataView lObj_DataView = new DataView(lObj_DataTable);rn return lObj_DataView;rnrn难道返回一个DataView数据集不对吗?rn
模糊查询的并非所有的代码路径返回值..江湖救急
小弟在写一个商品查询,用的是AspNetPager分页控件。但是查询不到结果,提示是“并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>”rnWeb层:rn keyword是从首页的一个textbox 里面取出的:rnstring str = txtSearch.Text.Trim();rnResponse.Redirect("Search.aspx?keyword=" + str);rn然后查询页面:rn protected void getSearchList()rn rn str = Request.QueryString["keyword"];rn DataList1.DataSource = goodsInfoManage.getKeyword(AspNetPager1.CurrentPageIndex, AspNetPager1.PageSize, str);rn DataList1.DataBind();rnrn rnDAL层:rnpublic List getKeyword(int pageIndex, int pageSize, string keyword)rn rn SqlParameter[] sqlParameters = rn new SqlParameter("@pageIndex",SqlDbType.Int),rn new SqlParameter("@pageSize",SqlDbType.Int),rn new SqlParameter("@Keyword",SqlDbType.VarChar)rn ;rn sqlParameters[0].Value = pageIndex;rn sqlParameters[1].Value = pageSize;rn sqlParameters[2].Value = keyword;rn List list = new List();rn SqlDataReader reader = SqlHelper.ExecuteReader(SqlHelper.ConnectionString, CommandType.StoredProcedure, "User_Search", sqlParameters);rn while (reader.Read())rn rn GoodsInfo gi = new GoodsInfo();rn gi.GoodsID = int.Parse(reader["GoodsID"].ToString());rn gi.GoodsName = reader["GoodsName"].ToString();rn gi.MarketPrice = decimal.Parse(reader["MarketPrice"].ToString());rn gi.MemberPrice = decimal.Parse(reader["MemberPrice"].ToString());rn gi.GoodsPic_s = reader["GoodsPic_s"].ToString();rn gi.GoodsSDesc = reader["GoodsSDesc"].ToString();rn gi.Keyword = reader["Keyword"].ToString();rn list.Add(gi);rn rn reader.Dispose();rn return list;rn rn存储过程:rnCREATE procedure User_Search rn(@pagesize int,rn@pageindex int,rn@Keyword varchar(60))rnasrnset nocount onrnbeginrndeclare @indextable table(id int identity(1,1),nid int)rndeclare @PageLowerBound intrndeclare @PageUpperBound intrnset @PageLowerBound=(@pageindex-1)*@pagesizernset @PageUpperBound=@PageLowerBound+@pagesizernset rowcount @PageUpperBoundrninsert into @indextable(nid) select GoodsID from tb_GoodsInfo where GoodsName like '%@keyword%' or Keyword like '%@keyword%' order by GoodsID descrnselect O.GoodsID,O.GoodsName,O.MarketPrice,O.MemberPrice,O.GoodsPic_s,O.GoodsSDesc,O.Keyword from tb_GoodsInfo O,@indextable t where O.GoodsID=t.nidrnand t.id between @PageLowerBound+1 and @PageUpperBound and O.GoodsName like '%@keyword%' or O.Keyword like '%@keyword%' order by t.idrnendrnset nocount offrnGOrnrn存储过程什么的应该没问题,估计是那个keyword造成的,但是我有不知道怎么改,请各位高手<em>帮忙</em>指点下。
代码路径返回值">"HLLW.ClassBase.blnConnectAccess(string)”: 并非所有的代码路径返回值
请问这个错误怎么解决啊?rn我是新建的cs文件中要自定义一个方法,如下:rnbool blnConnectAccess(string strAccountPath)rn rn if (strAccountPath != "")rn rn if (System.IO.File.Exists(strAccountPath))rn rnrn rn elsern rn rn rn rn rnrn结果就是那个提示,不知为什么?怎么解决啊?我以前一直用VB 6.0的,现在改用C# 2005,好多不会啊!
错误 1 “Dal.boBusiness.loadKey()”: 并非所有的代码路径返回值
文件一rn[code=C#]rnusing System;rnusing System.Collections.Generic;rnusing System.Text;rnrnnamespace Dalrnrn #region 连接数据库类rn /// rn /// 连接数据库参数rn /// rn class clsDBConnkeyrn rn //数据库<em>路径</em>rn public string DatabaseURL = "";rn //登陆密码 Login PassWordrn public string PassWord = "";rn //数据库服务器名称 Database Server Namern public string ServerName = "";rn //登陆用户名 Login UserNamern public string UserName = "";rn //数据库连接提供程序类型rn public EnumDBType DatabaseType;rn rn /// rn /// 数据库类型rn /// rn /// sqlserver数据库 rn public enum EnumDBTypern rn None = -1,rn sql = 0, //sqlserver数据库rn Oledb = 3 //access 数据库rn rn /// rn /// 数据库访问方式rn /// rn public enum executeMethodrn rn execute_NoneQuery = 0,rn execute_Reader = 1,rn execute_DataSet = 2,rn execute_Scalar = 3,rn execute_XmlReader = 4,rn execute_LineKey = 5rn rn #endregionrnrn[/code]rn文件二rn[code=C#]rnusing System;rnusing System.Collections.Generic;rnusing System.Text;rnrnnamespace Dalrnrn class boBusinessrn rn [color=#FF0000]public Dal.clsDBConnkey loadKey()[/color] 这里提示出错rn rn Dal.clsDBConnkey Connkey = new Dal.clsDBConnkey();rn Connkey.UserName = System.Configuration.ConfigurationManager.AppSettings["UID"];rn Connkey.PassWord = System.Configuration.ConfigurationManager.AppSettings["PWD"];rn Connkey.ServerName = System.Configuration.ConfigurationManager.AppSettings["Server"];rn Connkey.DatabaseURL = System.Configuration.ConfigurationManager.AppSettings["URL"];rn rn rnrnrn[/code]
C#运行提示:并非所有的代码路径返回值
public string SearchWord(string english)rn rn WordNode p = Head;rn Current = p;rn for (int i = 0; i ; rn rn rn rn rn rnrn
错误 是 GetName() 并非所有的代码路径返回值
public string GetName()rn rn string name = Convert.ToString(Request["name"]);rn string sql = "select * from Userinformation where UserName='" + name + "'";rn DataSet ds = kunmethod.GetDs(sql);rn if (ds.Tables[0].Rows.Count > 0)rn rn string dd = Convert.ToString(ds.Tables[0].Rows[0]["Password"]);rn string ee = Convert.ToString(ds.Tables[0].Rows[0]["Email"]);rn string ff = dd+","+ee;rn return ff;rn //1 字符串,2xml,3 json 4 jquery对象rn rn rn rn rn rn
vs2010提示“并非所有的代码路径返回值
写了一个<em>求</em>质数的子函数,但是系统一直提示:“test.zihanshu(int)”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>,怎么回事啊?rn protected Boolean zihanshu(int _betest)rn rn Boolean _result =true;rn for (int i = _betest / 2; i >=2; i--)rn rn if (_betest % i == 0)rn rn _result = false;rn break;rn rn return _result;rnrn rn rn
c#中“并非所有的代码路径返回值
public string sqlexe(string sql)rn rn cmd = new SqlCommand(sql,con);rn con.Open();rn string bbn = cmd.ExecuteScalar().ToString();rn con.Close();rn return bbn; rn rnrn public void sqlexe2(string sql)rn rn cmd = new SqlCommand(sql, con);rn con.Open();rn string bbn = cmd.ExecuteNonQuery().ToString();rn con.Close();rn rnrn public int loginlog(string a, string b,string c)rn rn bool IsOverMaxLoginCount = true;rn int custid=0;rn //取CustomerIDrn string sql = "SELECT CustomerID FROM Customer where (LoginName = " + a + ") AND (PassWord = " + b + ")";rn string bdf = sqlexe(sql);rn if (bdf != null)rn rn custid = Convert.ToInt32(bdf);rn rn else rn rn return 0;//0 用户名或密码不存在 rn rn //用户过期判断rn string sql1 = "SELECT COUNT(*) FROM Customer where CustomerID= "+custid +" and (ExpiryTime>getdate() or ExpiryTime is null)";rn string jkh= sqlexe(sql1); rn if (jkh == null)rn rn return 0;//0 用户名或密码不存在rn rn elsern rn string sql2 = "SELECT LoginLog.* FROM LoginLog where CustomerId="+custid ;rn SqlDataAdapter custlog = new SqlDataAdapter(sql2, con);rn DataSet ds = new DataSet();rn custlog.Fill(ds, "custlog");rn DataTable tblcust;rn tblcust = ds.Tables["custlog"];rnrn if(tblcust.Rows.Count< 2)rn rn bool boltemp = false;//表示已经有此条数据rn foreach( DataRow dr in tblcust.Rows )rn rn if (dr["Mac"].ToString().ToUpper().Trim() == c.ToString().ToUpper().Trim())rn rn boltemp = true;rn return 1;//用户成功登陆rn rn rn rn if (boltemp == false)rn rn //llAdp.Insert(CustomerId, strmac, true);//插入MAC地址rn string sql3 = "INSERT INTO LoginLog (CustomerId ,Mac) VALUES ("+custid+","+c+")";rn sqlexe2(sql3);rn return 1;//用户登录成功,并写入MACrn rnrnrn rnrn else if (tblcust.Rows.Count == 2)rn rn bool boltemp = false;//表示已经有此条数据rn foreach (DataRow dr in tblcust.Rows)rn rn if (dr["Mac"].ToString().ToUpper().Trim() == c.ToString().ToUpper().Trim())rn rn boltemp = true;rn return 1;//用户成功登陆 rn rn rnrn if (boltemp)rn IsOverMaxLoginCount = false;rn elsern IsOverMaxLoginCount = true;rn rn elsern rn IsOverMaxLoginCount = true;rnrn rn if (IsOverMaxLoginCount)rn rn return 2;//您已经在2台机器上使用过该用户名登陆。登陆失败!rn rn rnrn
如何解决“并非所有的代码路径返回值”?
提示我不是“并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>”?该怎么解决啊?rnrnDataTable dt = dbo.RunSqlDataTable("select * from PageUrlSet where id = '" + System.Web.HttpContext.Current.Request.QueryString["ID"] + "'");rn string[] strTemp = dt.Rows[0][10].ToString().Split(new char[] ',' ); //拆分字符串rn for (int i = 0; i < strTemp.Length; i++)rn rn DataTable dt1 = dbo.RunSqlDataTable("select * from userlist where id = '" + System.Web.HttpContext.Current.Session["ID"].ToString() + "'");rn string UserUnit = dt.Rows[0][5].ToString();rnrn if (strTemp[i] == UserUnit)rn rn return null;rn rn rn elsern rn string URL = " ";rn return URL ;rn //System.Web.HttpContext.Current.Response.Write(" ");rnrn rn
C#并非所有的代码路径返回值 急,助!!
服务端的<em>代码</em>rn public void Start()rn rn TServerSocket serverTransport = new TServerSocket(9091, 0, false);rn RPCService.Processor processor = new RPCService.Processor(new BusinessImpl());rn TServer server = new TSimpleServer(processor, serverTransport);rn ShowMsg("Starting server on port 9091 ...");rn server.Serve();rnrnrn rn public class BusinessImpl : RPCService.Ifacern rn rn rn Form1 frm = System.Windows.Forms.Application.OpenForms[0] as Form1;rn rn public void ShowMsg(string str)rn rn rn frm.txtMsg.AppendText(str + "\r\n");rn rn rn public byte[] SendRPCMessage(byte[] message)rn rnrn byte[] retData;rnrn retData = handleJushaServerCmd(message);rn rn return retData;rn rn rnrn rn public byte[] handleJushaServerCmd(byte[] message)rn rn ShowMsg("message[0] MessageTo = " + message[0]);rn ShowMsg("message[1] MessageName = " + message[1]);rn ShowMsg("message[2] MessageFormat = " + message[2]);rn int msgLen = message[3] + message[4] * 256;rn ShowMsg("message[3-4] MessageBodyLen = " + msgLen);rnrnrn ShowMsg("message body :");rn rn byte[] bodyret = new byte[msgLen];rn for (int k = 0; k < msgLen; k++)rn rn if (message[5 + k] != 0x0)rn rn bodyret[k] = message[5 + k];rn rn rn string bodyretStr = System.Text.Encoding.UTF8.GetString(bodyret);rnrn ShowMsg(bodyretStr);rn //生成<em>返回值</em>rnrnrn string msgbody = "\"light value\":34";rn int msgbodyLen = msgbody.Length;rn byte[] retData = new byte[5 + msgbodyLen];rn retData[0] = 6;rn retData[1] = 0;rn retData[2] = 1;rn //返回消息长度rn if (msgbodyLen < 256)rn rn retData[3] = (byte)msgbodyLen;rn retData[4] = 0;rn rn byte[] body = System.Text.Encoding.UTF8.GetBytes(msgbody);rn for (int k = 0; k < body.Length; k++)rn rn retData[5 + k] = body[k];rn rn return retData;rn rnrnrnrnrn这是服务端的<em>代码</em> 启动后 当客户端可以连上 ,但过一段时间服务端的程序就会无响应,但此时客户端仍然可以连接上服务器。也就是服务端仍在提供服务 ,但是程序界面却无响应了,<em>求</em>解决办法!!rnrnrn[color=#FF0000]现在知道是 “并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>” <em>求</em>解决办法[/color]
并非所有的代码路径返回值。。。。字符串截取
private string shuju(string string1)rn rn if (string1.Length>14)rn rn string1=string1.Substring(0,13)+"..";rn return string1;rn rn rn rnrnE:\wwwroot\1601200\XiYang\xiyang\production.aspx.cs(57): “_1601200.XiYang.xiyang.production.shuju(string)” : 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>rn请问这是怎么回事????rn该怎么做???
错误提示:并非所有的代码路径返回值 急啊!!!
public bool checktime(DateTime oildate) rn rnrn string dstr = "";rn int lgh;rn DateTime dtime;rn string strtime = "SELECT OVERFLOW_DATE FROM FJOM_SEAOVERFLOW ORDER BY OVERFLOW_DATE DESC";rn Myconnection = new OleDbConnection(ConnectionString);rn myCommand = new OleDbDataAdapter(strtime, Myconnection);rn DataSet dsoil = new DataSet();rn myCommand.Fill(dsoil, "FJOM_SEAOVERFLOW");rn lgh = dsoil.Tables[0].Rows.Count;rn for (int j = 0; j < lgh; j++)rn rn dstr = dsoil.Tables["FJOM_SEAOVERFLOW"].Rows[j][0].ToString();rn dtime = DateTime.Parse(dstr);rnrn if (oildate == dtime)rn return true;rn elsern return false;rn rn rn
并非所有路径都有返回值。什么意思?
private User _user;rn /// rn /// 获取填写的信息rn /// rn /// rn rn public User userrn rn getrn if(user!=null)rn rn _user = new User();rn _user.teleno = tbPhotono.Text;rn _user.username=tbUsername.Text;rn _user.realname=tbRealname.Text;rn _user.password=password;rn _user.gender = ddlGender.SelectedValue;rn _user.email = tbEmail.Text;rn _user.address=tbAddress.Text;rn _user.role_id=0;rn return _user;rn rn rn rnrn rn说GET并非所有<em>路径</em><em>都有</em><em>返回值</em>
大神帮忙,小弟在这里万分感谢
[img=http://img.my.csdn.net/uploads/201304/03/1364953829_8206.jpg][/img]rn[img=http://img.my.csdn.net/uploads/201304/03/1364953914_7821.jpg][/img]rn小弟在做影院售票系统,在做到查看放映计划的时候,遇到一个困难,请各位<em>大神</em>帮下忙。rnrn第一张图是放映计划数据表,第二张图片不太清楚,是查看放映计划的图片。rnrn一天之内放映两部电影,非常完美,非诚勿扰。在读数据库的时候,如何将Treeview控件里面的两项合并,也就是说 TreeView有两个子节点,分别是非诚勿扰,非常完美,而非诚勿扰只下又有两个子节点,分别是两个时间,非常完美是一个时间。rnrn各位<em>大神</em>帮<em>帮忙</em>了。下面是我写的程序,不知道可不可以在这个基础上修改。。rnrnSqlConnection conn = new SqlConnection("Data Source=.;Initial Catalog=CinemaSys;Integrated Security=True"); rnstring time = mcTime.SelectionRange.Start.ToString("yyyy-MM-dd");rn//时间处理,不知道是不是数据库的问题,还是系统的问题,left截取年月日有点问题,所以就改用程序之中对时间进行处理rn string time1 = time + " 00:00:00"; rnstring time2 = time + " 23:59:59"; rnSqlCommand comm = new SqlCommand("select distinct moviename,playtime from MoviePlan where PlayTime between '"+time1+"'and '"+time2+"'", conn); rntry rn rnconn.Open(); rnSqlDataReader sdr = null; rnsdr = comm.ExecuteReader(); rnif(sdr.HasRows) rnrnwhile (sdr.Read()) rn rnTreeNode tn = new TreeNode(); rntn.Text = sdr[0].ToString(); rntvViewPlan.Nodes.Add(tn); rntn.Nodes.Add(sdr[1].ToString()); rn rn rn rncatch (Exception ex) rn rnMessageBox.Show(ex.Message); rn rnfinally rn rnconn.Close(); rn
json错误问题,大神帮忙万分感谢
![图片说明](https://img-ask.csdn.net/upload/201706/27/1498493426_231671.png)rn![图片说明](https://img-ask.csdn.net/upload/201706/27/1498494631_146065.png)rn做的一个学籍管理的网页,之前用同样的<em>代码</em>做类似网页都没有问题,但这次就出现了错误,我创建好了数据库连接,但在数据库中存储的数据在网页端不<em>显示</em>,但如果我在网页插入了数据在数据库里可以<em>显示</em>。以下是我的一些相关<em>代码</em>,第一次提问实在不知道怎么get重点,如果有<em>大神</em><em>帮忙</em>答真的很<em>感谢</em>。rnrnrn```rnvar service = rn getStudents : function(callback) rn $.ajax(rn type : "get",rn url : "getStudents1.asp",rn dataType : 'text',rn success : function(data, textStatus)rn if (data) rn callback(JSON.parse(data));rn else rn alert("出错了11!");rn rn ,rn error : function() rn alert("出错了22!");rn rn );rn ,rn```rn貌似提示错误在这个部分,但实在不知道怎么改,也看不懂为什么错。rnrnrn```rn if (data) rn callback(JSON.parse(data));rn rn```rnrnrnrnrn
大神指导 万分感谢
使用链表完成通讯录rn实现的功能有:增加联系人,删除联系人,查找联系人,修改信息rn联系人的信息包括姓名,年龄,号码,地址,唯一标号rn删除根据姓名删除,根据唯一标号删除rnrn增加联系人插在头,尾和指定位置rnrn人机交互;操作简洁;提示丰富;信息排版整洁
在练习接口的时候提示,并非所有代码路径都有返回值
[code=C#]using System;rnusing System.Collections.Generic;rnusing System.Text;rnrnnamespace 接口练习rnrn public interface Ivehiclern rn int trumpet();rn rnrn class Bike : Ivehiclern rn public int trumpet()rn rn Console.WriteLine("I am bike 玲玲!");rnrn rn rnrn class Bus : Ivehiclern rn public int trumpet()rn rn Console.WriteLine("I am bus 叭叭!");rn rn rnrn class Programrn rn rn static void Main(string[] args)rn rn Bike dc = new Bike();rn Bus gc = new Bus();rnrn dc.trumpet();rn gc.trumpet();rnrn Console.ReadLine();rnrnrn rnrnrn rn [/code]rnrn错误 1 “接口练习.Bike.trumpet()”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em> 14 20 接口练习rn错误 2 “接口练习.Bus.trumpet()”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em> 23 20 接口练习rnrn 我哪儿错了?
函数XX并非所有代码路径都有返回值....
Public Function XX()rnrn Dim myNod As TreeNode, ii As Integer, j As Integerrn rn rs.Open("Select * from *****)rn Dim rs2rnrn While Not rs.EOFrnrn myNod = frmMain.TreeView1.Nodes.Add(i,aa)rn rs2 = New ADODB.Recordsetrn rs2.Open("Select * from Submenu where aa='" & rs("aaa").Value & "'", cn)rn While Not rs2.EOFrn myNod = frmMain.TreeView1.Nodes.Item(ii).Nodes.Add(j, rs2("bbb").Value)rn rs2.MoveNext()rn End Whilern rs.MoveNext()rn End Whilernrn Call CloseConn()rn End Functionrnrnrn函数 XX 并非所有<em>代码</em><em>路径</em>上<em>都有</em><em>返回值</em>,当使用结果时,可能会运行时发生NULL引用异常rnrn像这样的一个函数为什么会有上面这样的提示?整个函数过程没有提示有错误,但在最后的End Function底下有青色的下划线rnrn请教
编译器提示 : 并非所有的代码路径返回值,可我没有看出来哪儿没有返回,帮忙?
public Symbol this[string name]rnrn getrn rn if(list != null)rn rn foreach(Symbol sy in list)rn rn if(sy.symName == name)rn rn return sy;rnrn rn elsern rn return null;rn rn rn rn elsern rn return null;rn rn rn
并非所有代码途径都有返回值
public int Filldata(DsRegistry ds)rn rn this.sqlDataAdapterRegistry.SelectCommand = this.sqlSelectCommand1;rn return sqlDataAdapterRegistry.Fill(ds);rn rnrn public DsRegistry Filldata(DsRegistry ds, string condition)rn rn ds = GetDsdata(condition);rn if (ds != null)rn rn sqlDataAdapterRegistry.Fill(ds);rn return ds;rn rnrn rnrn下面调用时,找不到函数rnDsRegistry ds = new DsRegistry();rn ds=CoR.Filldata(ds, " where ParentNodeId = " + selectedFolderNodeId + " And NodeType like '%Data%'");rn错误:并非所有<em>代码</em>途径<em>都有</em><em>返回值</em> rn这怎么解决!rnrnrnrnrn
代码路径返回值"">方法返回值的问题,提示"并非所有的代码路径返回值"
public string GetPANO(string EmpNO)rn rn string ResultStr;rn string SelectStr ="select pa_no from iepa00h where substring(pa_card,2,5)='" + EmpNO +"'";rnrn tryrn rn SqlConnection m_cn=new SqlConnection(Connection_String2);rnrn SqlCommand cmd=new SqlCommand(SelectStr,m_cn);rn m_cn.Open ();rn SqlDataReader mydr;rn rn mydr=cmd.ExecuteReader();rn rn if (mydr.Read())rn rn ResultStr = (mydr.GetSqlString(0).ToString() );rn rn rn elsern rn ResultStr="";rn //return ResultStr;rn rn mydr.Close() ;rnrn m_cn.Close(); rn return ResultStr;rn rn rn catch (Exception ex)rn rn MessageBox.Show(ex.Message ,ex.Source); rn rn rn
人脸识别代码 所有的都有
人脸识别<em>代码</em> 可以实现很多功能, <em>代码</em>很齐全 可以参考一下
咋个报:并非所有的代码路径都返回
[code=C#]rnprotected int ReadSFMS(string xxdm)rn rn SqlParameter[] para = rn new SqlParameter("@xx_dm",SqlDbType.Char,5)rn ;rn para[0].Value = xxdm;rn if (xxdm.Trim() != "")rn rn tryrn rn MyAcc.RunProcForDataReader("Pre_School_Search", para, out MyRead);rn if (MyRead.Read())rn rn if (MyRead["qr_end_t"].ToString().Trim() != "")rn rn return 2;//不需要面试rn rn elsern rn return 1;//需要面试rn rn rn elsern rn return 1;rn rn rn catch (Exception err)rn rn MyAcc.Show(err.Message);rn rn finallyrn rn MyRead.Close();rn rn rn elsern rn return 1;rn rn rn[/code]rn这段<em>代码</em>运行后怎么报:rn错误 1 “_Default.ReadSFMS(string)”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>
高分解 上传解压代码 编译时候提示 xRar 并非所有的代码路径返回值
用rar上传解压提示 编译时候提示 xRar 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>rnrnrn<em>代码</em> rnstring _RarPath = System.Web.HttpContext.Current.Server.MapPath("./Inc/Rar.exe");rnrn public static string xRar(string RarFile, string ExctTo)rn rn string agt = "x -idp -r -tk -y \""+ RarFile +"\" \""+ ExctTo + "\"";rn Process Proc = new Process();rn ProcessStartInfo ProcInfo = new ProcessStartInfo(_RarPath);rn ProcInfo.UseShellExecute = false;rn ProcInfo.RedirectStandardOutput= true;rn ProcInfo.CreateNoWindow = false;rn ProcInfo.Arguments = agt;rn Proc.StartInfo = ProcInfo;rn tryrn rn Proc.Start();rn rn StreamReader sr = Proc.StandardOutput;rn Proc.Close();rn string s = sr.ReadToEnd();rn sr.Close();rn return s;rn rn catch(Exception Ex)rn rn rn rn rn解压部分rn protected void Upload_Click(object sender, EventArgs e)rn rn if ((UploadedFile.PostedFile == null) || (UploadedFile.PostedFile.FileName.Length ; rn rn rnrnrnrn rn
并非所以代码路径返回值的问题。。
<em>代码</em>如下:rn[code=C#]rn public static DataTable InsertDataByTipMsg(string LinkID, string Mobile, string LongPhone, string content, int price)rn rn //位客户ID号+_+批次号+_+应用ID+_+计费点IDrn StringBuilder sb = new StringBuilder();rn DataTable dt = new DataTable();rn int smskey = 1;rn int ishidden = 1;rnrn tryrn rn sb.Append("insert into SunTengSideals(LinkID,Mobile,RequestDate,LongPhone,MountCode,GameCode,ChargeCode,Devicecode,SMSKey,ReceiveQuery,Price,ResponseStatus,IsHidden) values('");rn sb.Append(LinkID + "','"); //linkidrn sb.Append(Mobile + "',");rn sb.Append("getdate(),'");rn sb.Append(LongPhone + "','");rn string[] infos = content.Split('_');rn if (infos.Length >= 4)rn rnrn int len = infos[2].Length;rn for (int i = 1; i , true);rnrn rnrn rn[/code]rn编译时报错:并非所以<em>代码</em>都<em>返回值</em>。。rn大家<em>帮忙</em>看看
提示:“method”: 并非所有的代码路径返回值,是什么意思呀,代码如下
public class hasQuotesrn rn public bool hasQuote(string inputString)rn rn for (int i=0;i
请问:这段简单的代码,为什么报错“并非所有的代码路径返回值”?
一个类,public class Person:IComparable ,其中写了一个方法。rnrn int IComparable.CompareTo(object obj)rn rn Person p2 = (Person)obj;rnrn if (this.FirstName.CompareTo(p2.FirstName) > 0)rn return 1;rn if (this.FirstName.CompareTo(p2.FirstName) < 0)rn return -1;rn if (this.FirstName.CompareTo(p2.FirstName) == 0)rn return 0;rn rn生成时候,系统报错:“Person.System.IComparable.CompareTo(object)”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>。rn为什么会这样呢?我觉得所有<em>路径</em>,都可以返回数值阿。rn非常谢谢大家啊。
错误: ————————并非所有的代码路径返回值代码已在下面:
using System;rnusing System.Collections.Generic;rnusing System.Linq;rnusing System.Text;rnrnnamespace jichengrnrn class Furniturern rn string colour;rn float height;rn float length;rn public Furniture(string a, float b, float c)rn rn colour = a ;rn height = b ;rn length = c ;rn rn public string display1()rn rn Console.WriteLine("颜色:0", colour );rn rn public float display2()rn rn Console.WriteLine("高度:0 长度:1",height,length );rn rn rn class Bookshelf : Furniturern rn int shelf;rn public Bookshelf():base("红色",3.5f ,5.5f)rn rn shelf = 5;rn rn public int display3()rn rn Console.WriteLine("层数:0", shelf);rn rn rn class Chair : Furniturern rn int leg;rn public Chair():base("黄色",1.0f,0.5f)rn rn leg = 3;rn rn public int display4()rn rn Console.WriteLine("腿数:0", leg);rn rn rn class Programrn rn static void Main(string[] args)rn rn Bookshelf obj = new Bookshelf();rn obj.display1();rn obj.display2();rn obj.display3();rn Chair my = new Chair();rn my.display1();rn my.display2();rn my.display4();rn Console.ReadLine();rnrn rn rn rnrnrnrn
并非所有代码路径返回值
protected SqlConnection createLoginConn() rn rnSqlConnection con = new SqlConnection("server=;database=yhdl;uid=sa;pwd=123456;"); rn rnrnrn就是它 啊 "createLoginConn" 出错啊 提示是:并非所有<em>代码</em>的<em>路径</em>都<em>返回值</em>
并非所有代码路径返回值
using System;rnusing System.Collections.Generic;rnusing System.ComponentModel;rnusing System.Data;rnusing System.Drawing;rnusing System.Linq;rnusing System.Text;rnusing System.Windows.Forms;rnusing ESRI.ArcGIS.Carto;rnusing ESRI.ArcGIS.Controls;rnusing ESRI.ArcGIS.esriSystem;rnusing ESRI.ArcGIS.SystemUI;rnusing ESRI.ArcGIS.Geometry;rnusing ESRI.ArcGIS.Geodatabase;rnrnnamespace _3sdnMaprnrn public partial class AttributeTableFrm : Formrn rn public DataTable attributeTable; rn public AttributeTableFrm()rn rnrn InitializeComponent();rnrn rnrn private void AttributeTableFrm_Load(object sender, EventArgs e)rn rnrn rn private static DataTable CreateDataTableByLayer(ILayer pLayer, string tableName)rn rn //创建一个DataTable表 rn DataTable pDataTable = new DataTable(tableName);rn //取得ITable接口 rn ITable pTable = pLayer as ITable;rn IField pField = null;rn DataColumn pDataColumn;rn //根据每个字段的属性建立DataColumn对象 rn for (int i = 0; i < pTable.Fields.FieldCount; i++)rn rn pField = pTable.Fields.get_Field(i);rn rn pDataColumn = new DataColumn(pField.Name);rn if (pField.Name == pTable.OIDFieldName)rn rn pDataColumn.Unique = true;//字段值是否唯一 rn //字段值是否允许为空 rn pDataColumn.AllowDBNull = pField.IsNullable;rn //字段别名 rn pDataColumn.Caption = pField.AliasName;rn //字段数据类型 rn pDataColumn.DataType = System.Type.GetType(ParseFieldType(pField.Type));rn //字段默认值 rn pDataColumn.DefaultValue = pField.DefaultValue;rn //当字段为String类型是设置字段长度 rn if (pField.VarType == 8)rn rn pDataColumn.MaxLength = pField.Length;rn rn //字段添加到表中 rn pDataTable.Columns.Add(pDataColumn);rn pField = null;rn pDataColumn = null;rn rn return pDataTable;rn rn rnrn private static string ParseFieldType(esriFieldType esriFieldType)rn rn switch (fieldType)rn rn case esriFieldType.esriFieldTypeBlob:rn return "System.String";rn case esriFieldType.esriFieldTypeDate:rn return "System.DateTime";rn case esriFieldType.esriFieldTypeDouble:rn return "System.Double";rn case esriFieldType.esriFieldTypeGeometry:rn return "System.String";rn case esriFieldType.esriFieldTypeGlobalID:rn return "System.String";rn case esriFieldType.esriFieldTypeGUID:rn return "System.String";rn case esriFieldType.esriFieldTypeInteger:rn return "System.Int32";rn case esriFieldType.esriFieldTypeOID:rn return "System.String";rn case esriFieldType.esriFieldTypeRaster:rn return "System.String";rn case esriFieldType.esriFieldTypeSingle:rn return "System.Single";rn case esriFieldType.esriFieldTypeSmallInteger:rn return "System.Int32";rn case esriFieldType.esriFieldTypeString:rn return "System.String";rn default:rn return "System.String";rn ;rn rn rn rn public static DataTable CreateDataTable(ILayer pLayer, string tableName) rn rn //创建空DataTable rn DataTable pDataTable = CreateDataTableByLayer(pLayer, tableName);rn //取得图层类型rn string shapeType = getShapeType(pLayer);rn //创建DataTable的行对象rn DataRow pDataRow = null;rn //从ILayer查询到ITable rn ITable pTable = pLayer as ITable;rn ICursor pCursor = pTable.Search(null, false);rn //取得ITable中的行信息rn IRow pRow = pCursor.NextRow();rn int n = 0;rn while (pRow != null)rn rn //新建DataTable的行对象rn pDataRow = pDataTable.NewRow();rn for (int i = 0; i < pRow.Fields.FieldCount; i++)rn rn //如果字段类型为esriFieldTypeGeometry,则根据图层类型设置字段值rn if (pRow.Fields.get_Field(i).Type == esriFieldType.esriFieldTypeGeometry)rn rn pDataRow[i] = shapeType;rn rn //当图层类型为Anotation时,要素类中会有esriFieldTypeBlob类型的数据,rn //其存储的是标注内容,如此情况需将对应的字段值设置为Element rn else if (pRow.Fields.get_Field(i).Type == esriFieldType.esriFieldTypeBlob)rn rn pDataRow[i] = "Element";rn rn elsern rn pDataRow[i] = pRow.get_Value(i);rn rn rn pDataTable.Rows.Add(pDataRow);rn pDataRow = null;rn n++;rn //为保证效率,一次只装载最多条记录rn if (n == 2000)rn rn pRow = null;rn rn elsern rn pRow = pCursor.NextRow();rn rn rn return pDataTable;rn rnrn public static string getShapeType(ILayer pLayer)rn rn IFeatureLayer pFeatLyr = (IFeatureLayer)pLayer;rn switch (pFeatLyr.FeatureClass.ShapeType)rn rn case esriGeometryType.esriGeometryPoint:rn return "Point";rn case esriGeometryType.esriGeometryPolyline:rn return "Polyline";rn case esriGeometryType.esriGeometryPolygon:rn return "Polygon";rn default:rn return "";rn rn rnrnrn public void CreateAttributeTable(ILayer player) rnrn string tableName; rn tableName = getValidFeatureClassName(player.Name); rn attributeTable = CreateDataTable(player, tableName);rn this.dataGridView1.DataSource = attributeTable;rn this.Text = "属性表[" + tableName + "] " + "记录数:" + attributeTable.Rows.Count.ToString();rn rnrn rn public static string getValidFeatureClassName(string FCname)rn rn int dot = FCname.IndexOf(".");rn if (dot != -1)rn rn return FCname.Replace(".", "_");rn rn return FCname;rn rnrnrn public static esriFieldType fieldType get; set; rn rn
不是所有的控件路径返回值???
#include rn#include rn#include rn#include rnrnusing namespace std;rnvoid printSudoku(int[][9]);rnbool isLegal(int,int,int[][9],int);rnbool solve(int,int,int[][9]);rnvoid stringAnalyze(string[],int[][9]);rnrnint main()rn string orders[30] = "018","034","052","076","113",rn "124","169","171","209","216",rn "278","284","332","341","356",rn "533","545","557","608","614",rn "677","685","712","726","761",rn "773","819","837","851","874";rn int sudoku[9][9] = 0,0,0,0,0,0,0,0,0,rn 0,0,0,0,0,0,0,0,0,rn 0,0,0,0,0,0,0,0,0,rn 0,0,0,0,0,0,0,0,0,rn 0,0,0,0,0,0,0,0,0,rn 0,0,0,0,0,0,0,0,0,rn 0,0,0,0,0,0,0,0,0,rn 0,0,0,0,0,0,0,0,0,rn 0,0,0,0,0,0,0,0,0rn ;rn stringAnalyze(orders,sudoku);rn printSudoku(sudoku);rn// for(int i = 0;i < 9;i++)rn// for(int j = 0;j < 9;j++)rn// solve(j,i,sudoku);rn// rn// rn solve(0,0,sudoku);rn cout << "\n";rn printSudoku(sudoku);rn return 0;rnrnrnvoid stringAnalyze(string orders[],int sudoku[][9])rn for(int count = 0;count < 30;count++)rn const char* point = orders[count].c_str();rn int tmp = atoi(point);rn int i = tmp / 100;rn int j = tmp / 10 - i * 10;rn int value = tmp % 10;rn sudoku[i][j] = value;rn rnrnrnvoid printSudoku(int sudoku[][9])rn for(int i = 0;i < 9;i++)rn for(int j = 0;j < 9;j++)rn cout << sudoku[i][j] << " ";rn rn cout << "\n";rn rnrnrnbool isLegal(int i,int j,int sudoku[][9],int value)rn for(int count = 0;count < 9;count++)rn if(count != i && sudoku[count][j] == value)rn return false;rn rn rn for(int count = 0;count < 9;count++)rn if(count != j && sudoku[i][count] == value)rn return false;rn rn rn int m = i / 3;rn int n = j / 3;rn for(int i = m * 3;i < 3 + m * 3;i++)rn for(int j = n * 3;j < 3 + n * 3;j++)rn if(sudoku[i][j] == value)rn return false;rn rn rn rn return true;rnrnrnbool solve(int i,int j,int sudoku[][9])rn// if(sudoku[i][j] != 0)rn// return;rn// elsern// for(int count = 1;count Sudoku.cpprn1>f:\projects\pd\pd\sudoku.cpp(111) : warning C4715: “solve”: 不是所有的控件<em>路径</em>都<em>返回值</em>rn1>正在链接...rn1>LINK : 没有找到 F:\Projects\PD\Debug\PD.exe 或上一个增量链接没有生成它;正在执行完全链接rn1>正在嵌入清单...rn1>生成日志保存在“file://f:\Projects\PD\PD\Debug\BuildLog.htm”rn1>PD - 0 个错误,1 个警告rnrn用的是VS2008,不清楚是什么问题。。。<em>求</em>高手解答下
错误:并非所有的代码路径返回值,这是怎么回事呢?
我将上传图片的功能做成了一个布尔函数,成功则返回true,失败返回false,不知怎的,浏览器却返回了“并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>”的错误提示,我百思不得其解啊,只好请示帮助了。rn 下面是我做试验的函数。 rn private bool uppic()rn rn if (fupMark.HasFile) //fupMark是FileUpload控件。rn rn string fileContentType = fupMark.PostedFile.ContentType;rn if (fileContentType == "image/bmp" || fileContentType == "image/gif" || fileContentType == "image/pjpeg")rn rn string name = fupMark.PostedFile.FileName; // 客户端文件<em>路径</em>rnrn FileInfo file = new FileInfo(name);rn string fileName = file.Name; // 文件名称rn string webFilePath = Server.MapPath("/ImgUpload/" + fileName); // 服务器端文件<em>路径</em>rnrn if (!File.Exists(webFilePath))rn rn tryrn rn fupMark.SaveAs(webFilePath); // 使用 SaveAs 方法保存文件rn TextBox1.Text = "/ImgUpload/" + fileName;rn lblMessage.Text = "提示:文件“" + fileName + "”成功上传,文件大小为:" + fupMark.PostedFile.ContentLength + "B";rn return true;rn rn catch (Exception ex)rn rn lblMessage.Text = "提示:文件上传失败,失败原因:" + ex.Message;rn //return false;rn rn rn elsern rn lblMessage.Text = "提示:文件已经存在,请重命名后上传";rn return false;rn rn rn elsern rn lblMessage.Text = "提示:文件类型不符,请使用:bmp,gif,jpg格式";rn return false;rn rn rn
重写抽象类方法提示错误: 并非所有的代码路径返回值
[code=C#]rn public abstract class abcrn rn internal virtual string getabc()rn rn rn rnrn internal class ABC : abcrn rn internal override string getabc()rn rn return "ccccccccc";rn rn rnrnrn class Programrn rn static void Main(string[] args)rn rn rn ABC Abc = new ABC();rn Console.WriteLine(Abc.getabc());rn Console.ReadKey();rn rn rn[/code]rnrn错误 1 “ConsoleApplication1.abc.getabc()”: 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>
问个错误:InputText(string,int)并非所有的代码路径返回值
这个是怎么回事情,怎么解决?
代码路径返回值"">蛙蛙请教:出错提示"并非所有的代码路径返回值"
蛙蛙请教:出错提示"并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>"rn我在类里写了个静态方法,用来上传东西,但是老是调试不成功,大家给看看,谢谢rnpublic static string upfile(System.Web.UI.Page p,System.Web.UI.HtmlControls.HtmlInputFile file1)rn rn if (file1.PostedFile != null) rn rn try rn rn string spath=p.Server.MapPath(p.Request.ApplicationPath)+ConfigurationSettings.AppSettings["uppath"]+oa.cls.globalstate.MakeRand(10)+System.IO.Path.GetFileName(file1.PostedFile.FileName);rn file1.PostedFile.SaveAs(spath);rn return spath;rnrn rn rn catch (Exception exc) rn rn throw exc;rn rnrn rn出错提示:rnE:\me\web.net\oa\cls\globalstate.cs(134): “oa.cls.globalstate.upfile(System.Web.UI.Page, System.Web.UI.HtmlControls.HtmlInputFile)” : 并非所有的<em>代码</em><em>路径</em>都<em>返回值</em>rn
大神解决,万分感谢!!!MATLAB2017b
<em>求</em><em>大神</em>解决,<em>万分</em><em>感谢</em>!!!
大神帮我看看问题,万分感谢
[img=https://img-bbs.csdn.net/upload/201904/04/1554342501_980219.jpg][/img]rnrn我本地测试<em>代码</em>正常,已上传服务器就报这个错误,根据这个报错类我找了一下,发现这个是jdk中的工具类。不是我项目中的jar。之前好好的,为什么突然就用不了了。<em>求</em><em>大神</em>解惑
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