内容控制在Silverlight 4中的内容大小调整

Question

我有一个ContentControl的样式，我想在目前使用Border的地方使用它。当我使用它时，子控件不会拉伸以填充整个区域，而只占用很小的空间。我尝试将HorizontalAlignment="Stretch"应用于所有内容，但它并没有起作用。有什么问题吗？

<Style x:Key="GradientPanel" TargetType="ContentControl">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="ContentControl">
                <Grid HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
                    <Rectangle RadiusY="10" RadiusX="10" Stroke="Black" StrokeThickness="0">
                        <Rectangle.Effect>
                            <DropShadowEffect Opacity="0.56" ShadowDepth="1" BlurRadius="3" />
                        </Rectangle.Effect>
                        <Rectangle.Fill>
                            <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                                <GradientStop Color="#FFE1EAF3"/>
                                <GradientStop Color="White" Offset="1"/>
                                <GradientStop Color="#FFFAFBFD" Offset="1"/>
                            </LinearGradientBrush>
                        </Rectangle.Fill>
                    </Rectangle>
                    <ContentPresenter Margin="5" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

之前的代码（正常工作）：

<Border Style="{StaticResource SearchContainerBorder}" >
    <Grid Margin="5">
        <Grid.RowDefinitions>
            <RowDefinition />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="Auto" />
        </Grid.ColumnDefinitions>
        <ToggleButton  Style="{StaticResource ToggleButtonExpanderStyle}" Grid.Row="0" Grid.Column="1" Height="25" Width ="25" HorizontalAlignment="Center" VerticalAlignment="Top" />
        <ContentControl Grid.Row="0"  HorizontalContentAlignment="Stretch" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
    </Grid>
</Border>

替换Border为ContentControl后：

<ContentControl Style="{StaticResource GradPanel}" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
    <Grid Margin="5">
        <Grid.RowDefinitions>
            <RowDefinition />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="Auto" />
        </Grid.ColumnDefinitions>
        <ToggleButton  Style="{StaticResource ToggleButtonExpanderStyle}" Grid.Row="0" Grid.Column="1" Height="25" Width ="25" HorizontalAlignment="Center" VerticalAlignment="Top" />
        <ContentControl Grid.Row="0"  HorizontalContentAlignment="Stretch" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
    </Grid>
</ContentControl>

- SturmUndDrang

Answer 1

你需要在外层ContentControl上设置HorizontalContentAlignment="Stretch"和VerticalContentAlignment="Stretch"。默认行为是不会拉伸容器内的内容。

例如，第一行应该是：

<ContentControl Style="{StaticResource GradPanel}" 
                HorizontalAlignment="Stretch" 
                VerticalAlignment="Stretch" 
                HorizontalContentAlignment="Stretch" 
                VerticalContentAlignment="Stretch" >

- Gone Coding