c# - 命令-从DataGridTemplateColumn绑定(bind)

<DataGrid ItemsSource="{Binding Occerences}"
          AutoGenerateColumns="False"
          IsReadOnly="True">
    <DataGrid.Columns>
        <DataGridTextColumn Header="Start index" Binding="{Binding Start}" />
        <DataGridTextColumn Header="End index"  />
        <DataGridTextColumn Header="Length"  />
        <DataGridTextColumn Header="Pattern"  />
        <DataGridTemplateColumn Header="Sequence">
            <DataGridTemplateColumn.CellTemplate>
                <DataTemplate>
                    <Button Content="Sequence" Command="{Binding SequenceCommand}" />
                </DataTemplate>
            </DataGridTemplateColumn.CellTemplate>
        </DataGridTemplateColumn>
        <DataGridTemplateColumn Header="Export">
            <DataGridTemplateColumn.CellTemplate>
                <DataTemplate>
                    <Button Content="Export" />
                </DataTemplate>
            </DataGridTemplateColumn.CellTemplate>
        </DataGridTemplateColumn>
    </DataGrid.Columns>
</DataGrid>

<Button Content="Sequence" Command="{Binding SequenceCommand}" />

这是行不通的。如何绑定(bind)到SequenceCommand(MyViewModel，ICommand SequenceCommand)？

我不能使用框架(mvvm灯光工具套件，棱镜等)。

最佳答案

DataTemplate中用于CellTemplate的DataContext将更改为绑定(bind)到未找到SequenceCommand的当前项。您必须将RelativeSource设置为DataGrid，并为Path设置DataContext.SequenceCommand，如下所示:

<Button Content="Sequence"
        Command="{Binding RelativeSource={RelativeSource AncestorType=DataGrid},
        Path=DataContext.SequenceCommand}" />