如何将Image源与视图模型属性WPF绑定

Question

我在测试应用程序中乱搞后找到了一个词云NuGet包我设法让世界云工作，但我使用的是imgWordcloud.Source = bi。当尝试使用属性绑定时，图像不会出现在视图中，但在单步执行程序时，位图图像存在于WordcloudImage属性中。

C＃代码：

private ImageSource _wordcloudImage;
public ImageSource WordcloudImage
{
    get { return _wordcloudImage; }
    set
    {
        if (_wordcloudImage != value)
        {
            _wordcloudImage = value;
            RaisePropertyChanged("WordcloudImage");
        }
    }
}

更多C＃代码：

public void CreateWordcloud()
{
    List<string> Data = new List<string>();

    List<int> Data2 = new List<int>();

    WordCloud.WordCloud wc = new WordCloud.WordCloud(200, 200, false, System.Drawing.Color.FromArgb(100, 168, 58, 117), 40, 1);

    foreach (var item in WordcloudExportItems[0].snapshots[0].items.items)
    {
        Data.Add(item.title);
        Data2.Add(2);
    }

    // ImageSource ...
    System.Drawing.Image imgWinForms = wc.Draw(Data, Data2);
    BitmapImage bi = new BitmapImage();

    bi.BeginInit();
    bi.CacheOption = BitmapCacheOption.OnLoad;
    MemoryStream ms = new MemoryStream();

    // Save to a memory stream...
    imgWinForms.Save(ms, ImageFormat.Png);

    // Rewind the stream...
    ms.Seek(0, SeekOrigin.Begin);

    // Tell the WPF image to use this stream...
    bi.StreamSource = ms;

    var img = System.Drawing.Image.FromStream(ms);
    bi.EndInit();

    _wordcloudImage = bi;
}

WPF：

<ListView 
    x:Name="lvWordcloudExport" 
    Grid.Row="1" 
    ItemsSource="{Binding WordcloudExportItems}" 
    SelectedItem="{Binding SelectedWordcloudExport, Mode=TwoWay}" 
    IsSynchronizedWithCurrentItem="False" 
    Visibility="{Binding Path=IsVisibleWordcloudExport, Converter={StaticResource BoolToVisConverter} }"
    >
    <ListView.View>
        <GridView>
            <GridViewColumn x:Name="Wordcloud" Header="Data"  >
                <GridViewColumn.CellTemplate>
                    <DataTemplate>
                        <Grid>
                            <TextBlock Text="whhiofw"></TextBlock>
                            <Image 
                                Name="imgWordcloud" 
                                Source="{Binding WordcloudImage}" 
                                Height="400" 
                                Width="200"
                                />
                        </Grid>
                    </DataTemplate>
                </GridViewColumn.CellTemplate>
            </GridViewColumn>
        </GridView>
    </ListView.View>
</ListView>