如何将数据从BitmapData绑定到WPF图像控件？ [英] How to bind data from BitmapData to WPF Image Control?

问题描述

我正在使用MVVM，在我的ViewModel中，我有一些BitmapData集合。
我希望它们通过数据绑定显示在我的视图中。

I'm using MVVM and in my ViewModel I've got some BitmapData collections. I want them to appear in my View as Images through data binding.

我该怎么做？

解决方案：

[ValueConversion(typeof(BitmapData), typeof(ImageSource))]
public class BitmapDataConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        BitmapData data = (BitmapData)value;
        WriteableBitmap bmp = new WriteableBitmap(
            data.Width, data.Height,
            96, 96,
            PixelFormats.Bgr24,
            null);
        int len = data.Height * data.Stride;
        bmp.WritePixels(new System.Windows.Int32Rect(0, 0, data.Width, data.Height), data.Scan0, len, data.Stride, 0, 0);
        return bmp;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotSupportedException();
    }
}

推荐答案

解决方案，感谢Clemens。

Solution, thanks to Clemens.

[ValueConversion(typeof(BitmapData), typeof(ImageSource))]
public class BitmapDataConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        BitmapData data = (BitmapData)value;
        WriteableBitmap bmp = new WriteableBitmap(
            data.Width, data.Height,
            96, 96,
            PixelFormats.Bgr24,
            null);
        int len = data.Height * data.Stride;
        bmp.WritePixels(new System.Windows.Int32Rect(0, 0, data.Width, data.Height), data.Scan0, len, data.Stride, 0, 0);
        return bmp;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotSupportedException();
    }
}

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