绑定列表视图以筛选另一个列表视图中的选定项

Question

我正在开发的 WPF 应用程序中有两个ListView项。它们都连接到我的应用程序中Presenter ViewModel 中的Datasets。

我最初的想法是将ListView中的SelectedItem装入TextBox，然后在第二个ListView

触发过滤器

但是，我遇到了一个问题：我想按数字过滤，而TextBox似乎只想接收文本。有解决方法吗？

这是我的 XAML

<Grid Margin="5,2,5,2" Height="350">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="1*"/>
        <ColumnDefinition Width="1*"/>
    </Grid.ColumnDefinitions>
    <ListView x:Name="TypeView" Grid.Column="0" ItemsSource="{Binding CashActivityTypes}" Margin="0,0,10,0">
        <ListView.View>
            <GridView>
                <!--This is the column I want to get -->
                <GridViewColumn Header="Sequence" DisplayMemberBinding="{Binding Sequence}" Width="75"/>
                <GridViewColumn Header="Activity Type" DisplayMemberBinding="{Binding Type}" Width="200"/>
                <GridViewColumn Header="Description" DisplayMemberBinding="{Binding Description}" Width="Auto"/>
            </GridView>
        </ListView.View>
    </ListView>
    <ListView Grid.Column="1" Margin="10,2,0,2">
        <ListView.View>
            <GridView>
                <GridViewColumn Header="Sequence" Width="75"/>
                <GridViewColumn Header="Activity" Width="200"/>
                <GridViewColumn Header="Description" Width="Auto"/>
            </GridView>
        </ListView.View>
    </ListView>
</Grid>
<Grid Margin="5,2,5,2">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="1*"/>
        <ColumnDefinition Width="1*"/>
    </Grid.ColumnDefinitions>
    <TextBox Text="{Binding SelectedItem.Sequence, ElementName=TypeView, UpdateSourceTrigger=PropertyChanged}" Width="150" HorizontalAlignment="Left"/>
    <Button Grid.Column="1" Content="Adjust Daily Cash Activity" MinWidth="150" Height="20" HorizontalAlignment="Right"/>
</Grid>

Answer 1

您可以在第一个列表视图选定项属性上对 VievModel 执行双向绑定：

private <TYPE> _CashActivityTypeSelected;
public <TYPE> CashActivityTypeSelected 
{
get
 {
   return _CashActivityTypeSelected;
 }
set
{
  _CashActivityTypeSelected=value; 
  FilterMySecondCollectionView(value);
 };

在 XAML 中：

<ListView SelectedItem="{Binding CashActivityTypeSelected, mode=TwoWay}" x:Name="TypeView" Grid.Column="0" ItemsSource="{Binding CashActivityTypes}" Margin="0,0,10,0">
        <ListView.View>
            <GridView>
                <!--This is the column I want to get -->
                <GridViewColumn Header="Sequence" DisplayMemberBinding="{Binding Sequence}" Width="75"/>
                <GridViewColumn Header="Activity Type" DisplayMemberBinding="{Binding Type}" Width="200"/>
                <GridViewColumn Header="Description" DisplayMemberBinding="{Binding Description}" Width="Auto"/>
            </GridView>
        </ListView.View>
    </ListView>

然后在FilterMySecondCollectionView(object t)中，您可以根据所选对象应用所需的任何过滤器。