读取二进制图片 并存入指定文件夹内

[wawa_0731]

判断文件夹Reports/EmployeePhoto/图片是否存在，，如果数据库PhotoFileNo有数据，，就读取数据并存入Reports/EmployeePhoto/

用System.IO的文件类判断，如果没有，从数据库中判断对应字段是否有内容，有则使用io留写出图片

求具体步骤

[kkun_3yue3]

System.IO.File.Exists("fileName");
                byte[] data = System.IO.File.ReadAllBytes("path");
                System.IO.File.WriteAllBytes("path", data);

[wawa_0731]

具体点 行不行哈

[mars199]

[Quote=引用 1 楼 kkun_3yue3 的回复:]
C# code
System.IO.File.Exists("fileName");
byte[] data = System.IO.File.ReadAllBytes("path");
System.IO.File.WriteAllBytes("path", data);
[/Quote]已经具体了

[wuyq11]

string[] files= Directory.GetFiles("", "*.*", SearchOption.AllDirectories);
一个文件File.Exists
byte[] photo=(byte[])dr[1];
Fille.WriteAllBytes("",Photo);或
Image img=Imagge.FromStream(new MemoryStream(photo));
img.Save("");

[wawa_0731]

哪里不对啊

bool isTp = false;

FileInfo fi = new FileInfo(serverPath);
if (fi.Extension.Equals(".gif"))
{
isTp = true;

}
else
{
isTp = false;
try
{

BRMyDocument brMD = new BRMyDocument(this);
DataTable dtMD = brMD.GetFile(Request.QueryString["PhotoFileNo"]);
if (dtMD.Rows.Count > 0)
{
DataRow drMD = dtMD.Rows[0];
byte[] fileBody = (byte[])drMD["FileBody"];
int len = fileBody.Length;

string url = HttpContext.Current.Server.MapPath(this.Request.ApplicationPath) + @"Reports\EmployeePhoto\";
FileStream fs = new FileStream(url, FileMode.OpenOrCreate);
BinaryWriter bw = new BinaryWriter(fs);
bw.BaseStream.Write(fileBody, 0, len);
bw.Flush();
bw.Flush();
fs.Close();
}

}
catch (Exception ex)
{
ex.ToString();
}
}

[wawa_0731]

二进制 怎么 转换成图片的啦

[ziliz854]

你用BinaryWriter写出来的文件只不过还是那些二进制数据而已，根本称不上是个图片文件吧，具体看4楼啊：
Image img=Imagge.FromStream(new MemoryStream(fileBody));
img.Save(url);

[wuyq11]

byte[] photo=(byte[])dr[1];
Image img=Imagge.FromStream(new MemoryStream(photo));
img.Save("");
转化为图片