GDI中发生一般性错误

您好所有

我有这样的代码，创建一个thumbnial从另一个形象，但我保存该图像时，它给了我这个错误。

GDI中发生一般性错误。"

这里是我的代码，所有的图像。JPG。

#region create thumnail

                string src = Server.MapPath(" /" + RadComboBox1.SelectedValue.ToString() + "/images/" + validFile.FileName);

                System.Drawing.Image image = System.Drawing.Image.FromFile(src);

                int srcWidth = image.Width;

                int srcHeight = image.Height;

                Bitmap bmp = new Bitmap(110, 74);

 

                System.Drawing.Graphics gr = System.Drawing.Graphics.FromImage(bmp);

                gr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

                gr.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;

                gr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;

 

                System.Drawing.Rectangle rectDestination = new System.Drawing.Rectangle(0, 0, 110, 74);

                gr.DrawImage(image, rectDestination, 0, 0, srcWidth, srcHeight, GraphicsUnit.Pixel);

 

                bmp.Save(src);

 

                bmp.Dispose();

                image.Dispose();

                #endregion