使用ContentPresenter，不使用ContentControl

女爷i 2021-12-01 23:08 406阅读 0赞

参考： https://wpf.2000things.com/2017/04/06/1204-using-a-datatrigger-to-change-content-in-a-contentpresenter/

<Window.Resources>
        <DataTemplate x:Key="DefaultContent">
            <StackPanel>
                <TextBlock Margin="10" Text="Some default content here.."/>
                <TextBlock Margin="10" Text="Maybe show progress for operation"/>
            </StackPanel>
        </DataTemplate>
     
        <DataTemplate x:Key="AllDoneContent">
            <StackPanel>
                <TextBlock Margin="10" Text="** This is the ALL DONE content..."
                           Foreground="Green"/>
                <TextBlock Margin="10" Text="Put anything you like here"/>
                <Button Margin="10" Content="Click Me" HorizontalAlignment="Left"/>
            </StackPanel>
        </DataTemplate>
     
        <Style x:Key="MyContentStyle" TargetType="ContentPresenter">
            <Setter Property="ContentTemplate" Value="{StaticResource DefaultContent}"/>
            <Style.Triggers>
                <DataTrigger Binding="{Binding JobDone}" Value="True">
                    <Setter Property="ContentTemplate" Value="{StaticResource AllDoneContent}"/>
                </DataTrigger>
            </Style.Triggers>
        </Style>
         
    </Window.Resources>
     
    <Grid Margin="10">
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
     
        <ContentPresenter Grid.Row="0" Style="{StaticResource MyContentStyle}" Content="{Binding}"/>
         
        <Separator Grid.Row="1"/>
     
        <CheckBox Grid.Row="2" Margin="10" Content="Mark job done" IsChecked="{Binding JobDone}"/>
    </Grid>

ContentControl通过DataTrigger进行切换模板时，原来绑定的模板会引发DataContext事件

转载于:https://www.cnblogs.com/rock\_chen/p/10140031.html