<StackPanel Orientation="Vertical"> <Image Width="450" Height="383" Source="C:/Users/Administrator/Documents/Visual Studio 2015/Projects/SplitPic/SplitPic/Images/1.jpg"/> <Image x:Name="img" Stretch="None" Width="450" Height="383" /></StackPanel>

public partial class MainWindow : Window{ public MainWindow() { InitializeComponent(); // 設(shè)置原圖 img.Source = new BitmapImage(new Uri(@"Images/1.jpg", UriKind.Relative)); // 切割圖片 ImageSource imageSource = img.Source; Bitmap bitmap = SystemUtils.ImageSourceToBitmap(imageSource); BitmapSource bitmapSource = SystemUtils.BitmapToBitmapImage(bitmap); BitmapSource newBitmapSource = SystemUtils.CutImage(bitmapSource, new Int32Rect(125, 60, 235, 285)); // 使用切割后的圖源 img.Source = newBitmapSource; }}// 圖像工具類public static class SystemUtils{ /// <summary> /// 切圖 /// </summary> /// <param name="bitmapSource">圖源</param> /// <param name="cut">切割區(qū)域</param> /// <returns></returns> public static BitmapSource CutImage(BitmapSource bitmapSource, Int32Rect cut) { //計(jì)算Stride var stride = bitmapSource.Format.BitsPerPixel * cut.Width / 8; //聲明字節(jié)數(shù)組 byte[] data = new byte[cut.Height * stride]; //調(diào)用CopyPixels bitmapSource.CopyPixels(cut, data, stride, 0); return BitmapSource.Create(cut.Width, cut.Height, 0, 0, PixelFormats.Bgr32, null, data, stride); } // ImageSource --> Bitmap public static System.Drawing.Bitmap ImageSourceToBitmap(ImageSource imageSource) { BitmapSource m = (BitmapSource)imageSource; System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(m.PixelWidth, m.PixelHeight, System.Drawing.Imaging.PixelFormat.Format32bppPArgb); System.Drawing.Imaging.BitmapData data = bmp.LockBits( new System.Drawing.Rectangle(System.Drawing.Point.Empty, bmp.Size), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppPArgb); m.CopyPixels(Int32Rect.Empty, data.Scan0, data.Height * data.Stride, data.Stride); bmp.UnlockBits(data); return bmp; } // Bitmap --> BitmapImage public static BitmapImage BitmapToBitmapImage(Bitmap bitmap) { using (MemoryStream stream = new MemoryStream()) {  bitmap.Save(stream, ImageFormat.Bmp);  stream.Position = 0;  BitmapImage result = new BitmapImage();  result.BeginInit();  // According to MSDN, "The default OnDemand cache option retains access to the stream until the image is needed."  // Force the bitmap to load right now so we can dispose the stream.  result.CacheOption = BitmapCacheOption.OnLoad;  result.StreamSource = stream;  result.EndInit();  result.Freeze();  return result; } }}