这是可能的，虽然有点复杂。
而不是几何绘图与可视化刷你也许也可以使用一个GlyphRunDrawing。然而，这看起来更加复杂。

<Image Stretch="None">
    <Image.Source>
        <DrawingImage>
            <DrawingImage.Drawing>
                <GeometryDrawing>
                    <GeometryDrawing.Brush>
                        <VisualBrush Stretch="Uniform">
                            <VisualBrush.Visual>
                                <TextBlock FontFamily="Segoe MDL2 Assets"
                                           Text="&#xE8C6;"/>
                            </VisualBrush.Visual>
                        </VisualBrush>
                    </GeometryDrawing.Brush>
                    <GeometryDrawing.Geometry>
                        <RectangleGeometry Rect="0,0,32,32"/>
                    </GeometryDrawing.Geometry>
                </GeometryDrawing>
            </DrawingImage.Drawing>
        </DrawingImage>
    </Image.Source>
</Image>

为了更容易重用，您可以像这样创建一个StaticResourceExtension：

[MarkupExtensionReturnType(typeof(DrawingImage))]
public class IconImageExtension : StaticResourceExtension
{
    private static readonly FontFamily fontFamily
        = new FontFamily("Segoe MDL2 Assets");

    public int SymbolCode { get; set; }

    public double SymbolSize { get; set; } = 16;

    public override object ProvideValue(IServiceProvider serviceProvider)
    {
        var textBlock = new TextBlock
        {
            FontFamily = fontFamily,
            Text = char.ConvertFromUtf32(SymbolCode)
        };

        var brush = new VisualBrush
        {
            Visual = textBlock,
            Stretch = Stretch.Uniform
        };

        var drawing = new GeometryDrawing
        {
            Brush = brush,
            Geometry = new RectangleGeometry(
                new Rect(0, 0, SymbolSize, SymbolSize))
        };

        return new DrawingImage(drawing);
    }
}

这样使用：

<Image Stretch="None"
       Source="{local:IconImage SymbolSize=32, SymbolCode=0xE8C6}"/>

一个更简单的解决方案是将这些项目放入您的通用主题目录或直接放入Page或Window的资源中：

<TextBlock x:Key="IconEdit" Text="&#xE70F;" FontFamily="Segoe MDL2 Assets" VerticalAlignment="Center" />
<TextBlock x:Key="IconNew" Text="&#xE710;" FontFamily="Segoe MDL2 Assets" VerticalAlignment="Center" />
<TextBlock x:Key="IconDelete" Text="&#xE74D;" FontFamily="Segoe MDL2 Assets" VerticalAlignment="Center" Foreground="Crimson" />

您可以从菜单项中引用它们：

<MenuItem Header="Edit" Icon="{StaticResource IconEdit}" />

这将它们放入一个中央存储库，您可以简单地更改图标，所有引用此图标的菜单项都会自动更改。