大伟，补分啦！

kafanqd 2011-10-27 09:32:01

还得麻烦你一件事

asp.net 图片上传怎么实现？

要代码！

我以前是有winform实现的上传，现在想用asp.net的网页实现，谢谢！

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暖枫无敌 2011-10-27

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图片存储:通过文件上传获取图片并转换成Byte[]字节数组,保存到数据库Image字段
昨晚给你整的读取，我以为你会图片存入数据库呢，下面的根据你需要进行改改，就是数据插入那块，根据你实际字段来。



<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

</head>

<body>

    <form id="form1" runat="server" style="font-size: 12px;" enctype="multipart/form-data">

    备 注:<asp:TextBox ID="markname" runat="server"></asp:TextBox>

    上 传:<asp:FileUpload ID="FileUpload1" runat="server" />

    <asp:Button ID="Button1" runat="server" OnClientClick="return checkClint()" Text="上 传"

        OnClick="Button1_Click" />

    <script language="javascript" type="text/javascript">

        function checkClint() {

            var getmarkname = document.getElementById("markname");

            var getfile = document.getElementById("FileUpload1");



            if (getmarkname.value == "") {

                alert('请输入图片备注名称！');

                getmarkname.focus();

                return false;

            } else if (getfile.value == "") {

                alert('请选择上传文件路径！');

                getfile.focus();

                return false;

            } else {

                return true;

            }

        } 

    </script>

    </form>

</body>

</html>

----------------------------------------------------------------------------------

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.IO;

using System.Data.SqlClient;



public partial class Default2 : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {



    }

    protected void Button1_Click(object sender, EventArgs e)

    {

        //获取数据

        string getname = this.markname.Text;

        string getfile = this.FileUpload1.PostedFile.FileName;



        //上传文件

        string getlastpath = FileUploadCompant(this.FileUpload1);



        //获取上传文件流

        byte[] getbyte = new byte[this.FileUpload1.PostedFile.ContentLength];

        Stream filestream = this.FileUpload1.PostedFile.InputStream;



        //读入数据

        filestream.Read(getbyte, 0, this.FileUpload1.PostedFile.ContentLength);



        //插入数据

        #region

        string sql = "insert into employee(markname,markContent,markType,markSize,markLinkUrl) values(@name,@content,@type,@size,@link)";



        SqlParameter[] getpars = new SqlParameter[5];

        getpars[0] = new SqlParameter("@name", getname);

        getpars[1] = new SqlParameter("@content", getbyte);//文件内容插入This.Fileupload1.FileBytes同样可以直接转换成Byte数组不用转换

        getpars[2] = new SqlParameter("@type", this.FileUpload1.PostedFile.ContentType);//保存文件类型

        getpars[3] = new SqlParameter("@size", this.FileUpload1.PostedFile.ContentLength);//文件长度

        getpars[4] = new SqlParameter("@link", getlastpath);



        int getrescount = DBUtility.SqlHelper.ExecuteNonQuery(DBUtility.SqlHelper.connString, CommandType.Text, sql, getpars);



        if (getrescount == 1)

        {

            //添加成功

            ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "aler ", "alert( '图片记录成功添加到数据库'); ", true);

        }

        else

        {

            //添加失败

            ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "aler ", "alert( '图片记录添加失败'); ", true);

        }



        #endregion

    }



    /// <summary>

    /// 文件上传操作-单独隔离出来方法

    /// </summary>

    public string FileUploadCompant(FileUpload getfileupload)

    {

        string takeServerpath = string.Empty;//保存到服务器路径



        try

        {

            if (string.IsNullOrEmpty(getfileupload.PostedFile.FileName))

            {

                ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "aler ", "alert( '请选择上传文件的路径!'); ", true);

                getfileupload.Focus();

            }

            else

            {

                string filepath = getfileupload.PostedFile.FileName;//获得全路径

                //获得文件名

                string filename = filepath.Substring(filepath.LastIndexOf("\\") + 1);



                //保存服务器路径 -唯一文件名

                string serverpath = Server.MapPath("FileuploadDict/") + System.DateTime.Now.ToString("yyy-MM-dd-hh-mm-ss") + Session.SessionID + filename;



                //保存到服务器上

                getfileupload.SaveAs(serverpath);



                //保存成功 提示信息

                ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "aler ", "alert( '文件上传成功！'); ", true);

                takeServerpath = serverpath;

            }

        }

        catch (Exception se)

        {

            //抓取一场信息 并提示

            ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "aler ", "alert( '文件上传失败-上传过程出现如下异常信息:" + se.Message.ToString() + "！'); ", true);

        }



        return takeServerpath;

    }

}

一起得瑟 2011-10-27

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FileUpload 控件 <asp:FileUpload ID="fileHeader" runat="server" />

cs代码:string path = Server.MapPath("~/plmnhytf12f3");
string header = "";
if (fileHeader.FileName != "")
{

path = path + "/jobs/" + id + "/";
header = "/plmnhytf12f3/jobs/" + id + "/" + fileHeader.FileName;
string sql = "update vogues set header='" + header + "' where id=" + id;
DbHelperSQL.GetSingle(sql);

Directory.CreateDirectory(path);
fileHeader.SaveAs(path+fileHeader.FileName);
}

自己看着整呗