GDI + kills me with this "common mistake"

Question

Honestly, what works with GDI + in ASP.Net? It works so mysteriously, and the error descriptions are rather mysterious: A common mistake in GDI +.

Oh, thank you very much, now I know for sure what went wrong ... no.

Take a look at the code causing the error, and maybe you can help me?

var fileStream = fuImage.FileContent;
var imageStream = new MemoryStream();

imageStream.SetLength(fileStream.Length);
fileStream.Read(imageStream.GetBuffer(), 0, (int)fileStream.Length);

imageStream.Flush();
fileStream.Close();

using (var image = System.Drawing.Image.FromStream(imageStream))
{
    using (Bitmap bmp = new Bitmap(image.Width, image.Height))
    {
        using (Graphics gr = Graphics.FromImage(bmp))
        {
            gr.DrawImage(image, 0, 0);
            bmp.Save(path);
        }
    }
}

This is a really simplified version of my code, but it still causes an error. fuImage is a control FileUpload(.NET Web Forms).

If you get this error, make sure that there is a full path to where you are going to save the file ... or you may receive this general error message.

Answer 1

MemoryStream .
FileUpload , GDI +.