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//上传图片并生成缩略图
public string Outputimg(HttpPostedFile fileUpload)
{
#region Outputimg
Graphics g = null;
System.Drawing.Image upimage = null;
System.Drawing.Image thumimg = null;
System.Drawing.Image simage = null;
Bitmap outputfile = null;
String filename = "";
try
{
filename = String.Format("{0}{1}", Guid.NewGuid().ToString("N"), Path.GetExtension(fileUpload.FileName));
string smallpath = "//111.111.1.111/uploadfile/smallimg/";
string bigpath = "//111.111.1.111/uploadfile/bigimg/";
int width, height, newwidth, newheight;
System.Drawing.Image.GetThumbnailImageAbort callb = new System.Drawing.Image.GetThumbnailImageAbort(ThumbnailCallback);
if (!Directory.Exists(smallpath))
{
Directory.CreateDirectory(smallpath);
}
if (!Directory.Exists(bigpath))
{
Directory.CreateDirectory(bigpath);
}
fileUpload.SaveAs("//111.111.1.111/uploadfile/bigimg/" + filename);
Stream upimgfile = fileUpload.InputStream;
string simagefile = "//111.111.1.111/uploadfile/bigimg/" + filename; //要加水印的文件
simage = System.Drawing.Image.FromFile(simagefile);
upimage = System.Drawing.Image.FromStream(upimgfile); //上传的图片
width = upimage.Width;
height = upimage.Height;
//[color=#FF0000]宽、高[/color]
thumimg = upimage.GetThumbnailImage(140, 120, callb, IntPtr.Zero);
outputfile = new Bitmap(upimage);
g = Graphics.FromImage(outputfile);
g.DrawImage(simage, new Rectangle(upimage.Width - simage.Width, upimage.Height - simage.Height, upimage.Width, upimage.Height), 0, 0, upimage.Width, upimage.Height, GraphicsUnit.Pixel);
thumimg.Save("//111.111.1.111/uploadfile/smallimg/" + filename);
outputfile.Dispose();
}
catch
{
// throw ex;
}
finally
{
if (g != null)
g.Dispose();
if (thumimg != null)
thumimg.Dispose();
if (upimage != null)
upimage.Dispose();
if (simage != null)
simage.Dispose();
}
return filename;
#endregion
}
public bool ThumbnailCallback()
{
return false;
}
//结束
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