得到上传图片的长和宽

  string fullName= this.FileUpload1.PostedFile.FileName;
           if (this.FileUpload1.HasFile)
           {
               System.Drawing.Image image = System.Drawing.Image.FromFile(fullName);
               int width = image.Width;
               int height = image.Height;
              Response.Write(width+","+height);
           }