是否可以使用带参数的 WPF ResourceDictionary？

Question

我在资源词典中将一些图标存储为 XAML-代码，例如

    <DataTemplate x:Key="Question">
    <Viewbox Width="16" Height="16" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
        <Rectangle Width="16" Height="16">
            <Rectangle.Fill>
                <DrawingBrush>
                    <DrawingBrush.Drawing>
                        <DrawingGroup>
                            <DrawingGroup.Children>
                                <GeometryDrawing Brush="#00FFFFFF" Geometry="F1M16,16L0,16 0,0 16,0z" />
                                <GeometryDrawing Brush="#FFF6F6F6" Geometry="F1M10,14L6,14 6,9C6,8.232,6.29,7.531,6.765,7L4,7 4,5C4,3.262 5.682,2 8,2 10.316,2 12,3.262 12,5L12,7C12,8.304,11.164,9.416,10,9.828z" />
                                <GeometryDrawing Brush="#FF414141" Geometry="F1M9,11L7,11 7,13 9,13z M9,10L7,10 7,9C7,7.897,7.897,7,9,7L9,5.203C8.84,5.115 8.495,5 8,5 7.504,5 7.159,5.115 7,5.203L7,6 5,6 5,5C5,3.841 6.261,3 8,3 9.738,3 11,3.841 11,5L11,7C11,8.103,10.102,9,9,9z" />
                            </DrawingGroup.Children>
                        </DrawingGroup>
                    </DrawingBrush.Drawing>
                </DrawingBrush>
            </Rectangle.Fill>
        </Rectangle>
    </Viewbox>
</DataTemplate>

问题：宽度和高度是固定值。所以我将固定值更改为“自动”，资源字典中没有任何错误。

    <DataTemplate x:Key="QuestionAuto">
    <Viewbox Width="Auto" Height="Auto" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
        <Rectangle Width="Auto" Height="Auto">
            <Rectangle.Fill>
                <DrawingBrush>
                    <DrawingBrush.Drawing>
                        <DrawingGroup>
                            <DrawingGroup.Children>
                                <GeometryDrawing Brush="#00FFFFFF" Geometry="F1M16,16L0,16 0,0 16,0z" />
                                <GeometryDrawing Brush="#FFF6F6F6" Geometry="F1M10,14L6,14 6,9C6,8.232,6.29,7.531,6.765,7L4,7 4,5C4,3.262 5.682,2 8,2 10.316,2 12,3.262 12,5L12,7C12,8.304,11.164,9.416,10,9.828z" />
                                <GeometryDrawing Brush="#FF414141" Geometry="F1M9,11L7,11 7,13 9,13z M9,10L7,10 7,9C7,7.897,7.897,7,9,7L9,5.203C8.84,5.115 8.495,5 8,5 7.504,5 7.159,5.115 7,5.203L7,6 5,6 5,5C5,3.841 6.261,3 8,3 9.738,3 11,3.841 11,5L11,7C11,8.103,10.102,9,9,9z" />
                            </DrawingGroup.Children>
                        </DrawingGroup>
                    </DrawingBrush.Drawing>
                </DrawingBrush>
            </Rectangle.Fill>
        </Rectangle>
    </Viewbox>
</DataTemplate>

然后我在我的视图中使用图标设置宽度和高度值，但没有显示任何内容。 “固定”图标有效，“自动”图标无效。

    <ContentPresenter Grid.RowSpan="2"
                      ContentTemplate="{StaticResource Question32}"
                      Margin="20,0">
    </ContentPresenter>

对比

<ContentPresenter Grid.RowSpan="2"
                  ContentTemplate="{StaticResource QuestionAuto}"
                  Margin="20,0"
                  Width="64"
                  Height="64">
</ContentPresenter>

是否可以在 xaml-view 中设置 width 和 height 参数并在 resourcedictionary 中使用它们？因为 xaml-icon 基本上是“动态的”，可变大小比猜测宽度和高度完美匹配要好。

Answer 1

最好将图标定义为 DrawingImage 资源，如

<DrawingImage x:Key="Question">
    <DrawingImage.Drawing>
        <DrawingGroup>
            <DrawingGroup.Children>
                <GeometryDrawing Brush="#00FFFFFF" Geometry="F1M16,16L0,16 0,0 16,0z" />
                <GeometryDrawing Brush="#FFF6F6F6" Geometry="F1M10,14L6,14 6,9C6,8.232,6.29,7.531,6.765,7L4,7 4,5C4,3.262 5.682,2 8,2 10.316,2 12,3.262 12,5L12,7C12,8.304,11.164,9.416,10,9.828z" />
                <GeometryDrawing Brush="#FF414141" Geometry="F1M9,11L7,11 7,13 9,13z M9,10L7,10 7,9C7,7.897,7.897,7,9,7L9,5.203C8.84,5.115 8.495,5 8,5 7.504,5 7.159,5.115 7,5.203L7,6 5,6 5,5C5,3.841 6.261,3 8,3 9.738,3 11,3.841 11,5L11,7C11,8.103,10.102,9,9,9z" />
            </DrawingGroup.Children>
        </DrawingGroup>
    </DrawingImage.Drawing>
</DrawingImage>

并在像

这样的图像元素中显示它们

<Image Source="{StaticResource Question}" Width="64" Height="64"/>

绘图会根据图像的Stretch 属性拉伸到所需的尺寸，默认为Uniform。

是否可以使用带参数的 WPF ResourceDictionary？

Is it possible to use WPF ResourceDictionary with parameters?

c#

parameters

wpf

xaml

resourcedictionary