我有一个PopupBox，我想更改图标。目前它默认为DotsVertical，我想将它作为DotsHorizo​​ntal

Question

我正在将MaterialDesignInXAML用于WPF应用程序。我有一个PopupBox，我想更改图标。目前默认为DotsVertical，我希望将其设为DotsHorizontal。

我尝试了以下但没有运气。

<materialDesign:PopupBox PlacementMode="BottomAndAlignRightEdges" StaysOpen="False">
    <materialDesign:PopupBox.Content>
        <materialDesign:PackIcon Kind="DotsHorizontal" />
    </materialDesign:PopupBox.Content>
    <StackPanel>
        <TextBlock Text="Test1" />
        <TextBlock Text="Test2" />
        <TextBlock Text="Test3" />
    </StackPanel>
</materialDesign:PopupBox>

提前致谢！

Answer 1

想出来并在此处留下答案以防其他人遇到此问题。有一个名为ToggleContent

的属性

<materialDesign:PopupBox PlacementMode="BottomAndAlignRightEdges" StaysOpen="False">
    <materialDesign:PopupBox.ToggleContent>
        <materialDesign:PackIcon Kind="DotsHorizontal" />
    </materialDesign:PopupBox.ToggleContent>
    <StackPanel>
        <TextBlock Text="Test1" />
        <TextBlock Text="Test2" />
        <TextBlock Text="Test3" />
    </StackPanel>
</materialDesign:PopupBox>

Answer 2

要更改图标并保留当前样式，请使用以下方法：

<materialDesign:PopupBox PlacementMode="BottomAndAlignRightEdges" StaysOpen="False">
     <materialDesign:PopupBox.ToggleContent>
         <materialDesign:PackIcon Kind="DotsHorizontal" 
                                Foreground="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=materialDesign:PopupBox}, Path=Foreground}"                        />
         </materialDesign:PopupBox.ToggleContent>
    <StackPanel>
        <TextBlock Text="Test1" />
        <TextBlock Text="Test2" />
        <TextBlock Text="Test3" />
    </StackPanel>
</materialDesign:PopupBox>