网格中的组合框不填充网格的单元格宽度

Question

我在 Grid 中有一个 ComboBox 以及几个文本框。
Grid 定义如下：

<Grid Grid.Row="1" Grid.Column="1" Margin="0,10,0,0" ColumnSpacing="5">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="Auto" />
        <ColumnDefinition Width="*" />
        <ColumnDefinition Width="Auto" />
        <ColumnDefinition Width="*" />
        <ColumnDefinition Width="Auto" />
        <ColumnDefinition Width="*" />
        <ColumnDefinition Width="Auto" />
        <ColumnDefinition Width="*" />
        <ColumnDefinition Width="Auto" />
        <ColumnDefinition Width="*" />
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto" />
    </Grid.RowDefinitions>
    <!-- All of the text boxes -->
    <TextBlock Grid.Column="8" Text="Combo" VerticalAlignment="Center" />
    <ComboBox Grid.Column="9" Text="{x:Bind ViewModel.ComboText}" ItemsSource="{x:Bind ViewModel.ComboItems}" HorizontalContentAlignment="Stretch" />
</Grid>

请注意，我已在 HorizontalContentAlignment 中添加。这对使组合填充 Grid 没有影响，它仍然看起来像这样：

如何让 ComboBox 填充 Cell 的宽度，与其他 TextBox 一样？

Answer 1

ComboBox in a Grid does not fill a grid's cell width

HorizontalContentAlignment is used to make horizontal alignment of the control's content. If you want to make ComboBox fill a gird cell please set HorizontalAlignment 作为 Stretch.

<ComboBox Grid.Column="9" 
Text="{x:Bind ViewModel.ComboText}" 
ItemsSource="{x:Bind ViewModel.ComboItems}" 
HorizontalAlignment="Stretch" />

网格中的组合框不填充网格的单元格宽度

ComboBox in a Grid does not fill a grid's cell width

xaml

datagridcell

uwp

uwp-xaml