xaml - 为什么按钮不拉伸(stretch)以填充网格单元格？

Question

我即将在 中创建一个网格矩阵UWP应用并且遇到了 Button 控件没有拉伸(stretch)以填充可用空间的这种行为；相比之下，TextBox 控件可以。如何强制 Button 控件表现得像 TextBox？

     <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="*" />
            <RowDefinition Height="*" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>
        <Grid.Resources>
            <Style TargetType="Button">
                <Setter Property="BorderBrush" Value="Yellow" />
                <Setter Property="BorderThickness" Value="5" />
            </Style>

            <Style TargetType="TextBox">
                <Setter Property="BorderBrush" Value="Yellow" />
                <Setter Property="BorderThickness" Value="5" />
            </Style>
        </Grid.Resources>

        <TextBox   Grid.Row="0" Grid.Column="0" Text="One"   />
        <TextBox  Grid.Row="0"  Grid.Column="1" Text="Two"   />

        <Button   Grid.Row="1" Grid.Column="0" Content="Three"   />
        <Button  Grid.Row="1"  Grid.Column="1" Content="Four"   />
    </Grid>

Answer 1

只需将这两个属性添加到您的按钮:

Horizo​​ntalAlignment="拉伸(stretch)"

VerticalAlignment="拉伸(stretch)"

最终按钮定义:

<Button
    Grid.Row="1"
    Grid.Column="0"
    HorizontalAlignment="Stretch"
    VerticalAlignment="Stretch"
    Content="Three" />
<Button
    Grid.Row="1"
    Grid.Column="1"
    HorizontalAlignment="Stretch"
    VerticalAlignment="Stretch"
    Content="Four" />

Also, the reason those properties need to be overwritten is because in the default Style Template for Button they are set via Setter as Left/Center respectively by default.