private void button1_Click(object sender, EventArgs e) { ExtendedImage extImg = new ExtendedImage(); using (FileStream fs = new FileStream("d:\\WImageTest\\ab1.jpg", FileMode.Open)) { extImg.Load(fs, jpgDecode); //copy decoded pixels to new bmp System.Drawing.Bitmap newBmp = new Bitmap(extImg.PixelWidth, extImg.PixelHeight, System.Drawing.Imaging.PixelFormat.Format32bppArgb); var bmpdata = newBmp.LockBits( new System.Drawing.Rectangle(0, 0, extImg.PixelWidth, extImg.PixelHeight), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format32bppArgb); System.Runtime.InteropServices.Marshal.Copy( extImg.Pixels, 0, bmpdata.Scan0, extImg.Pixels.Length); newBmp.UnlockBits(bmpdata); newBmp.Save("d:\\WImageTest\\img_tools_test.jpg"); fs.Close(); } using (FileStream fs = new FileStream("d:\\WImageTest\\a01_4_1.png", FileMode.Open)) { extImg.Load(fs, pngDecode); //copy decoded pixels to new bmp System.Drawing.Bitmap newBmp = new Bitmap(extImg.PixelWidth, extImg.PixelHeight, System.Drawing.Imaging.PixelFormat.Format32bppArgb); var bmpdata = newBmp.LockBits( new System.Drawing.Rectangle(0, 0, extImg.PixelWidth, extImg.PixelHeight), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format32bppArgb); System.Runtime.InteropServices.Marshal.Copy( extImg.Pixels, 0, bmpdata.Scan0, extImg.Pixels.Length); newBmp.UnlockBits(bmpdata); newBmp.Save("d:\\WImageTest\\img_tools_test.png"); fs.Close(); } }