asked on

How to write an image in GIF format

I would like a function that takes in a System.Image object and a file name and will save the Image to the file in GIF format.

void ConvertToGif(System.Image img, string gifFileName)
{
// Save img to gifFileName as Gif...
}

Please take into account transparency

Thanks!

jrram

See if either of these two links help:

http://www.codeguru.com/Cpp/Cpp/cpp_managed/nfc/article.php/c4839/#more

or

http://www.csharphelp.com/archives3/archive551.html

icestac

ASKER

Those articles were not really helpful. I have gotten to this point, but the transparency does not work.

string [] images = System.IO.Directory.GetFiles(this.tbDir.Text, "*.png");

foreach (string image in images)
{
      try
      {
            Image i = Image.FromFile(image);
            string gif = System.IO.Path.ChangeExtension(image, ".gif");
            System.IO.FileStream fs = System.IO.File.Create(gif, 256);
            i.Save(fs, System.Drawing.Imaging.ImageFormat.Gif);
            fs.Close();
      }
      catch (Exception e2)
      {
            System.Diagnostics.Trace.WriteLine("Unable to convert image: " + e2.ToString());
      }
}

For the 500 points, I am really just looking for a function that I can copy and paste.

icestac

ASKER

I just ended up finding a thrid party utility to convert the images... pngConverter by Incors

icestac

ASKER

By the way, there is a Microsoft article that gets most of the way there (except it is in grayscale instead of color)

See Q319061

ASKER CERTIFIED SOLUTION

DarthMod

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