c# - GDI+ 中出现一般错误

Question

我当时在保存图像时已将 imgpaths 使用到 server.mappath()
中，我在 GDI+ 错误中发生了一般错误。

            Graphics Grfx = Graphics.FromImage(bitmap);
            Grfx.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
            Grfx.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
            Grfx.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
            Grfx.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
            Grfx.DrawImage(bitmap, 0, 0, wb.Width, wb.Height);

            using (Bitmap img = bitmap.Clone() as Bitmap)
            {
                Bitmap newimage = img.Clone(new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height), img.PixelFormat);
                newimage.Save(imgpaths, System.Drawing.Imaging.ImageFormat.Jpeg);  //Error:A generic error occurred in GDI+.
            }



            wb.Dispose();

Answer 1

从文件中读取图像时，只要该图像对象存在，文件就会保持打开状态。

您必须先处理原始图像对象，然后才能使用相同的文件名保存图像。