wpf - 如何在 DataGrid.DataGridTemplateColumn 内设置 UserControl 的 DataContext？

Question

我想在 DataGridTemplateColumn 内设置用户控件的数据上下文，但它不起作用，这是代码:

<DataGrid AutoGenerateColumns="False" ItemsSource="{Binding RequesterPeoples}">
<DataGrid.Columns>
    <DataGridTemplateColumn  Header="name" Width="200">
        <DataGridTemplateColumn.CellTemplate>
            <DataTemplate>
                <MvvmCommonControl:CustomDataGridSelectorControl DataContext="{Binding DataContext.RequesterPeoplesDataContext,ElementName=MyWindow}">
                    <MvvmCommonControl:CustomDataGridSelectorControl.DataGridColumns>
                        <MvvmCommonControl:DataGridColumnCollection>
                            <DataGridTextColumn Header="FarsiNmae" Width="100" Binding="{Binding FarsiName, Mode=OneWay}"></DataGridTextColumn>
                        </MvvmCommonControl:DataGridColumnCollection>
                    </MvvmCommonControl:CustomDataGridSelectorControl.DataGridColumns>
                </MvvmCommonControl:CustomDataGridSelectorControl>
            </DataTemplate>
        </DataGridTemplateColumn.CellTemplate>
    </DataGridTemplateColumn>
</DataGrid.Columns>

Answer 1

我只需要使用 RelativeSource而不是 ElementName .

我改变了这个:

 DataContext="{Binding DataContext.RequesterPeoplesDataContext,ElementName=MyWindow}"

对此:

 DataContext="{Binding DataContext.RequesterPeoplesDataContext,RelativeSource={RelativeSource AncestorType=Window}}"