C# 如何从基于控件堆叠重叠的按钮

我正在尝试为基本对话框创建一个控件模板，其中可以包含预定义的按钮，这些按钮可以显示在内容的顶部。问题是按钮与内容的堆叠不正确

这是我目前得到的结果：

我希望得到这样的东西：

<ControlTemplate x:Key="BaseDialogTemplate" TargetType="{x:Type dialogs:BaseDialog}">
    <Grid Background="{TemplateBinding Background}">
        <ScrollViewer VerticalScrollBarVisibility="Auto"
                      HorizontalScrollBarVisibility="Auto">
            <Grid>
                <Grid.RowDefinitions>
                     <RowDefinition Height="*" />
                     <RowDefinition Height="Auto" />                         
                </Grid.RowDefinitions>
                <ContentPresenter x:Name="PART_ContentPresenter"
                                  Content="{TemplateBinding Content}" />
                <Grid Grid.Row="1" HorizontalAlignment="Stretch"
                      VerticalAlignment="Stretch">
                    <StackPanel x:Name="PART_ButtonStackPanel"
                                Margin="10"
                                HorizontalAlignment="Right"
                                VerticalAlignment="Bottom"
                                Orientation="Horizontal">
                        <Button x:Name="PART_OkButton"
                                MinWidth="80"
                                Margin="0 0 5 0"
                                Background="Yellow"
                                Content="Base Ok Button" />
                        <Button x:Name="PART_CancelButton"
                                MinWidth="80"
                                Margin="5 0 5 0"
                                Background="Yellow"
                                Content="Base Cancel Button" />
                    </StackPanel>
                </Grid>
            </Grid>
        </ScrollViewer>
    </Grid>
</ControlTemplate>

<Style TargetType="{x:Type dialogs:BaseDialog}">
    <Setter Property="Foreground" Value="Black" />
    <Setter Property="Background" Value="White" />
    <Setter Property="Template" Value="{StaticResource BaseDialogTemplate}" />
</Style>

这是基本对话框资源的代码：

<ControlTemplate x:Key="BaseDialogTemplate" TargetType="{x:Type dialogs:BaseDialog}">
    <Grid Background="{TemplateBinding Background}">
        <ScrollViewer VerticalScrollBarVisibility="Auto"
                      HorizontalScrollBarVisibility="Auto">
            <Grid>
                <ContentPresenter x:Name="PART_ContentPresenter"
                                  Content="{TemplateBinding Content}" />
                <Grid HorizontalAlignment="Stretch"
                      VerticalAlignment="Stretch">
                    <StackPanel x:Name="PART_ButtonStackPanel"
                                Margin="10"
                                HorizontalAlignment="Right"
                                VerticalAlignment="Bottom"
                                Orientation="Horizontal">
                        <Button x:Name="PART_OkButton"
                                MinWidth="80"
                                Margin="0 0 5 0"
                                Background="Yellow"
                                Content="Base Ok Button" />
                        <Button x:Name="PART_CancelButton"
                                MinWidth="80"
                                Margin="5 0 5 0"
                                Background="Yellow"
                                Content="Base Cancel Button" />
                    </StackPanel>
                </Grid>
            </Grid>
        </ScrollViewer>
    </Grid>
</ControlTemplate>

<Style TargetType="{x:Type dialogs:BaseDialog}">
    <Setter Property="Foreground" Value="Black" />
    <Setter Property="Background" Value="White" />
    <Setter Property="Template" Value="{StaticResource BaseDialogTemplate}" />
</Style>

---

您的ContentPresenter和包含堆栈面板的网格都是网格的一部分。第0行。尝试添加行定义以分隔内容，如下所示：

<ControlTemplate x:Key="BaseDialogTemplate" TargetType="{x:Type dialogs:BaseDialog}">
    <Grid Background="{TemplateBinding Background}">
        <ScrollViewer VerticalScrollBarVisibility="Auto"
                      HorizontalScrollBarVisibility="Auto">
            <Grid>
                <Grid.RowDefinitions>
                     <RowDefinition Height="*" />
                     <RowDefinition Height="Auto" />                         
                </Grid.RowDefinitions>
                <ContentPresenter x:Name="PART_ContentPresenter"
                                  Content="{TemplateBinding Content}" />
                <Grid Grid.Row="1" HorizontalAlignment="Stretch"
                      VerticalAlignment="Stretch">
                    <StackPanel x:Name="PART_ButtonStackPanel"
                                Margin="10"
                                HorizontalAlignment="Right"
                                VerticalAlignment="Bottom"
                                Orientation="Horizontal">
                        <Button x:Name="PART_OkButton"
                                MinWidth="80"
                                Margin="0 0 5 0"
                                Background="Yellow"
                                Content="Base Ok Button" />
                        <Button x:Name="PART_CancelButton"
                                MinWidth="80"
                                Margin="5 0 5 0"
                                Background="Yellow"
                                Content="Base Cancel Button" />
                    </StackPanel>
                </Grid>
            </Grid>
        </ScrollViewer>
    </Grid>
</ControlTemplate>

<Style TargetType="{x:Type dialogs:BaseDialog}">
    <Setter Property="Foreground" Value="Black" />
    <Setter Property="Background" Value="White" />
    <Setter Property="Template" Value="{StaticResource BaseDialogTemplate}" />
</Style>

感谢您的回复。我以前试过这样做，但没有达到我想要的效果。按钮不会出现在内容的顶部（不会覆盖内容），实际上，我认为这可能是我目前的最佳选择。我将把这个标记为答案。非常感谢。