保存图像时 GDI+ 中出现一般性错误

Question

我阅读了同一问题的答案并按要求做了。如前一个答案中所述，我还为当前用户授予了文件夹的写入权限，但仍然出现此错误。所以请任何人都可以为我提供具体的答案要做什么？这是我的代码

    protected void Page_Load(object sender, EventArgs e)
{
    //get all the files in a directory
    string[] files = Directory.GetFiles(@"D:\Naved\BasicDotNet\Images");

    //combine them into one image
    System.Drawing.Bitmap stitchedImage = Combine(files);

    //save the new image
    stitchedImage.Save(@"D:\Naved\BasicDotNet\Images", System.Drawing.Imaging.ImageFormat.Jpeg);//Error:-A generic error occurred in GDI+

}
public static System.Drawing.Bitmap Combine(string[] files)
{
    //read all images into memory
    List<System.Drawing.Bitmap> images = new List<System.Drawing.Bitmap>();
    System.Drawing.Bitmap finalImage = null;

    try
    {
        int width = 0;
        int height = 0;

        foreach (string image in files)
        {
            //create a Bitmap from the file and add it to the list
            System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(image);

            //update the size of the final bitmap
            width += bitmap.Width;
            height = bitmap.Height > height ? bitmap.Height : height;

            images.Add(bitmap);
        }

        //create a bitmap to hold the combined image
        finalImage = new System.Drawing.Bitmap(width, height);

        //get a graphics object from the image so we can draw on it
        using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(finalImage))
        {
            //set background color
            g.Clear(System.Drawing.Color.Black);

            //go through each image and draw it on the final image
            int offset = 0;
            foreach (System.Drawing.Bitmap image in images)
            {
                g.DrawImage(image,
                  new System.Drawing.Rectangle(offset, 0, image.Width, image.Height));
                offset += image.Width;
            }
        }

        return finalImage;
    }
    catch (Exception ex)
    {
        if (finalImage != null)
            finalImage.Dispose();

        throw ex;
    }
    finally
    {
        //clean up memory
        foreach (System.Drawing.Bitmap image in images)
        {
            image.Dispose();
        }
    }
}
}

Answer 1

尝试

stitchedImage.Save(@"D:\Naved\BasicDotNet\Images\stitchedImage.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);

而不是

stitchedImage.Save(@"D:\Naved\BasicDotNet\Images", System.Drawing.Imaging.ImageFormat.Jpeg);

Image.Save (String, ImageFormat) 的第一个参数是要保存到的文件 name，而不是要保存到的 directory .之前你做过

string[] files = Directory.GetFiles(@"D:\Naved\BasicDotNet\Images");

所以@"D:\Naved\BasicDotNet\Images"一定是目录，不是文件。

（顺便说一下，我建议将拼接的图像保存到不同的目录；否则，每次您运行您的代码都会将之前的拼接与之前的内容拼接在一起。）

Answer 2

stitchedImage.Save(@"D:\Naved\BasicDotNet\Images", System.Drawing.Imaging.ImageFormat.Jpeg); - you need to specify the file name here. I.e edit it to something like this:     `stitchedImage.Save(@"D:\Naved\BasicDotNet\Images\myjpeg.Jpeg", System.Drawing.Imaging.ImageFormat.Jpeg)`

保存图像时 GDI+ 中出现一般性错误

A generic error occurred in GDI+ when saving Image

c#

gdi

system.drawing.graphics