Write GIF is diffirent from Read GIFWhy?

Question

i want read a GIF file to stream and then write stream to another placebut i find that my GIF file is diffirent from the old one it is ugly then the old one why this is the code System.Drawing.Bitmap TargetBitmap = new System.Drawing.Bitmap(bmpbmp.Widthbmp.Height); System.Drawing.Graphics bmpGraphics; bmpGraphics = System.Drawing.Graphics.FromImage(TargetBitmap); System.Drawing.Rectangle rect = new System.Drawing.Rectangle(0 0 bmp.Widthbmp.Height); bmpGraphics.DrawImage(bmprectrectSystem.Drawing.GraphicsUnit.Pixel); TargetBitmap.Save(mstreamSystem.Drawing.Imaging.ImageFormat.Gif); but when i read data from mstream it is diffirent from the old one it is not clearly then the old one why?

Mykonine · Answer

Oh you wish to load a GIF draw it on another image and input THAT image? 1. Load the GIF to an instance of a Bitmap. 2. Draw the Bitmap instance onto another image. 3. Save the new image to file. If that doesn't work it's because the program did some work with the image. You should be able to disable that intermediate work; I would check the API specifications.

winston 0 · Answer

i just want kown why?i need draw some thing on the out put file how can i just copy the file?

Mykonine · Answer

I think in this case it would be better to simply copy the file.

winston 0 · Answer

is there and settings in Graphics to make the picture more clearly?

Write GIF is diffirent from Read GIF,Why?