如何用ComboBox“填充”GridViewColumn？

Question

我正在寻找一种方法来“完全填充”一个组合框的GridViewColumn。我可以用ComboBox创建一个单元格模板，它工作得很好。但是ComboBox的宽度和高度与GridViewColumn不对齐。即使我尝试设置相同的高度/宽度，GridViewColumn也会隐藏comboBox的某些部分。

必须有某种设置或样式才能指示WPF在GridViewColumn的可用空间中完全填充ComboBox

这是我的XAML。

<Window x:Class="WPFStarter.ComboInsideListView.ComboBoxInsideListViewUsingObject"
        x:Name="userControl"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="ComboBoxInsideListViewUsingObject" Height="300" Width="400">
    <Grid>
        <ListView x:Name="listView" ItemsSource="{Binding ElementName=userControl, 
            Path=DataContext.Items}" SelectedItem="{Binding ElementName=userControl, Path=DataContext.SelectedItem, Mode=TwoWay}">                   
            <ListView.View>
                <GridView>
                   <GridViewColumn Header="First Name"  DisplayMemberBinding="{Binding Path=First}"/>
                   <GridViewColumn Header="Gender">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <ComboBox x:Name="cmb_Gender" Width="75" SelectedValue="{Binding Path=Gender}"                    
                  ItemsSource="{Binding ElementName=userControl, Path=DataContext.Genders}" GotFocus="ComboBox_GotFocus"         />
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                </GridView>

            </ListView.View>

        </ListView>
    </Grid>
</Window>

Answer 1

将以下样式包含到ListViews-resources中。然后，您可以将ComboBox的HorizontalAlignment-属性设置为HorizontalAlignment="Stretch"，它将如您所愿：

 <ListView.Resources>
          <Style TargetType="ListViewItem">
                <Setter Property="HorizontalContentAlignment" Value="Stretch" />
          </Style>
 </ListView.Resources>

Answer 2

你有没有试过这个：

<ComboBox x:Name="cmb_Gender" Width="75" SelectedValue="{Binding Path=Gender}"                    
    ItemsSource="{Binding ElementName=userControl, Path=DataContext.Genders}" 
    GotFocus="ComboBox_GotFocus" 
    HorizontalAlignment="Stretch" VerticalAlignment="Stretch" />