GridView 标题点击答案

【问题标题】：GridView Header ClickGridView 标题点击
【发布时间】：2017-03-29 04:45:23
【问题描述】：

我想弄清楚如何将网格视图标题单击指向我的视图模型

 <ListView ItemsSource="{Binding UserProfileData}" GridViewColumnHeader.Click="Handle_Click">
       <ListView.View>
                <GridView>
                    <GridViewColumn DisplayMemberBinding="{Binding Name}" Header="User ID"/>
                    <GridViewColumn DisplayMemberBinding="{Binding LastUsed}" Header="Last Loaded"/>
                    <GridViewColumn DisplayMemberBinding="{Binding IsLoaded}" Header="Logged In"/>
                </GridView>
            </ListView.View>
        </ListView>

GridViewColumnHeader.Click="Handle_Click" 会将其推送到我的 MainWindow.xaml.cs 但我想让点击转到我的 MainWindow 的 DataContext

<Window.DataContext>
    <vm:MainWindowViewModel/>
</Window.DataContext>

有什么想法吗？

【问题讨论】：

标签： c# wpf gridview

【解决方案1】：

您可以使用样式将GridViewColumnHeader 的Command 属性绑定到视图模型的ICommand 源属性。然后，您可以将标头 string 作为参数传递给命令：

<ListView x:Name="test" ItemsSource="{Binding UserProfileData}">
    <ListView.Resources>
        <Style TargetType="GridViewColumnHeader">
            <Setter Property="Command" Value="{Binding YourCommandProperty}" />
            <Setter Property="CommandParameter" Value="{Binding Content, RelativeSource={RelativeSource Self}}" />
        </Style>
    </ListView.Resources>
    <ListView.View>
        <GridView>
            <GridViewColumn DisplayMemberBinding="{Binding Name}" Header="User ID"/>
            <GridViewColumn DisplayMemberBinding="{Binding LastUsed}" Header="Last Loaded"/>
            <GridViewColumn DisplayMemberBinding="{Binding IsLoaded}" Header="Logged In"/>
        </GridView>
    </ListView.View>
</ListView>

【讨论】：

【解决方案2】：

您需要添加 2 个程序集的引用：

System.Windows.Interactivity
Microsoft.Expression.Interactions

添加以下命名空间：

xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"

Xaml：

<ListView ItemsSource="{Binding UserProfileData}">
        <ListView.View>
            <GridView>
                <GridViewColumn DisplayMemberBinding="{Binding Name}">
                    <GridViewColumnHeader Content="User ID">
                        <i:Interaction.Triggers>
                            <i:EventTrigger EventName="Click">
                                <ei:CallMethodAction TargetObject="{Binding}" MethodName="OnClick"/>
                            </i:EventTrigger>
                        </i:Interaction.Triggers>
                    </GridViewColumnHeader>
                </GridViewColumn>

                <GridViewColumn DisplayMemberBinding="{Binding LastUsed}">
                    <GridViewColumnHeader Content="Last Loaded">
                        <i:Interaction.Triggers>
                            <i:EventTrigger EventName="Click">
                                <ei:CallMethodAction TargetObject="{Binding}" MethodName="OnClick"/>
                            </i:EventTrigger>
                        </i:Interaction.Triggers>
                    </GridViewColumnHeader>
                </GridViewColumn>

                <GridViewColumn DisplayMemberBinding="{Binding IsLoaded}">
                    <GridViewColumnHeader Content="Logged In">
                        <i:Interaction.Triggers>
                            <i:EventTrigger EventName="Click">
                                <ei:CallMethodAction TargetObject="{Binding}" MethodName="OnClick"/>
                            </i:EventTrigger>
                        </i:Interaction.Triggers>
                    </GridViewColumnHeader>
                </GridViewColumn>
            </GridView>
        </ListView.View>
    </ListView>

在视图模型中，放置以下方法：

public void OnClick(object sender, RoutedEventArgs e)
    {

    }

【讨论】：