Wpf Image 展示方式 图片处理 显示

Wpf Image 展示方式 图片处理 显示

1、创建Bitmap

   public Bitmap CreateBitmap(int width,int height,int step,IntPtr pdata){return new Bitmap(width,height,step,System.Drawing.Imaging.PixelFormat.Format8bppIndexed,pdata);}

2、Bitmap转BitmapSource显示

   public void ShowImg(System.Drawing.Bitmap bitmap){IntPtr hBitmap = bitmap.GetHbitmap();Img = Imaging.CreateBitmapSourceFromHBitmap(hBitmap, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());}

3、Bitmap转BitmapImage显示

   public void ShowImgEx(System.Drawing.Bitmap bitmap){MemoryStream ms = new MemoryStream();bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);byte[] bytes = ms.GetBuffer();  //byte[]   bytes=   ms.ToArray(); 这两句都可以ms.Close();BitmapImage image = new BitmapImage();image.BeginInit();image.StreamSource = new MemoryStream(bytes);image.EndInit();Img = image; bitmap.Save("111.bmp",ImageFormat.Bmp);}

4、WriteableBitmap 显示

   public void ShowImgEx2(int width, int height, IntPtr pdata){var (pixel, palette) = GetPixelFormat(1);int bufferLen = width * height;BitmapSource? bitmapSource = WriteableBitmap.Create(width, height, 96, 96, pixel, palette, pdata, bufferLen, width);Img = bitmapSource;}