failed to setPixel of gif ?

Hello Hope your doing well Thanks for reaching out!

1. Load the GIF

Image gif = Image.FromFile("your.gif");

2. Get Frame Count

FrameDimension dimension = new FrameDimension(gif.FrameDimensionsList[0]); int frameCount = gif.GetFrameCount(dimension);

3. Select a Frame

gif.SelectActiveFrame(dimension, 0); // Select first frame

4. Convert Frame to Editable Bitmap

GIF frames are not editable directly. So we copy the frame to a new bitmap:

Bitmap editableFrame = new Bitmap(gif.Width, gif.Height, PixelFormat.Format32bppArgb); using (Graphics g = Graphics.FromImage(editableFrame)) {     g.DrawImage(gif, 0, 0); }

5. Change Pixel

Now you can safely change a pixel:

editableFrame.SetPixel(10, 10, Color.Red); // Example: set pixel at (10,10) to red

6. Save the Edited Frame

You can save the modified frame as a new image

editableFrame.Save("edited_frame.png", ImageFormat.Png);