MM们
您可以使用WriteableBitmap. 这非常快，但它通过将单个字节写入位图来工作，因此如果您需要将效果应用于绘图，那么您必须自己编写它们。这是一个如何使用WriteableBitmap. 在调试模式下，在我的计算机上的 1600 x 1200 像素图像上绘制 1000 条线（每条线由 1600 个点组成）需要大约 100 毫秒，但我确信这可以优化。我只是随机绘制线条，但您可以从Canvas触控笔获取事件并捕获其位置，并在每次笔画后传递它们。public partial class MainWindow : Window{ private WriteableBitmap _bitmap; private readonly Random _random = new Random(); private readonly Stopwatch _stopwatch = new Stopwatch(); private const int White = 0x00000000; private const int Red = 0x00FF0000; private int _width; private int _height; public MainWindow() { InitializeComponent(); CanvasImage.Loaded += OnLoaded; } private async void OnLoaded(object sender, RoutedEventArgs e) { _width = (int)DrawableCanvas.ActualWidth; _height = (int)DrawableCanvas.ActualHeight; _bitmap = new WriteableBitmap(_width, _height, 96, 96, PixelFormats.Bgr32, null); CanvasImage.Source = _bitmap; while (true) { unsafe { for (var index = 0; index < _width * _height; index++) *((int*)_bitmap.BackBuffer + index) = White; } _stopwatch.Start(); for (var index = 0; index < 1000; index++) { var start = _random.Next(0, _width); var points = Enumerable.Range(0, _width).Select(x => new Point((x + start) % _width, x % _height)); UpdateImage(points); } Debug.WriteLine($"Last 1000 draws took: {_stopwatch.ElapsedMilliseconds} ms"); _stopwatch.Reset(); await Task.Delay(300); } } private void UpdateImage(IEnumerable<Point> points) { _bitmap.Lock(); foreach (var point in points) { var x = (int)point.X; var y = (int)point.Y; var offset = _width * y + x; unsafe { *((int*)_bitmap.BackBuffer + offset) = Red; } } _bitmap.AddDirtyRect(new Int32Rect(0, 0, _width, _height)); _bitmap.Unlock(); }}并查看：<Grid> <Border Width="1604" Height="1204" BorderThickness="2" BorderBrush="Blue"> <Canvas x:Name="DrawableCanvas"> <Image x:Name="CanvasImage"></Image> </Canvas> </Border></Grid>