绑定不适用于DataGrid上的行标题

Question

我有这个，我知道绑定工作，因为我用它来填充数据网格，但是当我尝试填充行标题时，它似乎不起作用。

        <DataGrid Margin="150,50,150,50" x:Name="GridBinding" ItemsSource="{Binding Path=Elements[Month]}" Background="Transparent" RowBackground="Transparent" AutoGenerateColumns="False" AreRowDetailsFrozen="True" SelectionUnit="Cell" GridLinesVisibility="None" IsReadOnly="True">

        <DataGrid.Columns>
            <DataGridTextColumn Header="Oct." Binding="{Binding Path=Element[October].Value}" Width="*" Foreground="Black"/>
            <DataGridTextColumn Header="Nov." Binding="{Binding Path=Element[November].Value}" Width="*" Foreground="Black"/>
            <DataGridTextColumn Header="Dec." Binding="{Binding Path=Element[December].Value}" Width="*" Foreground="Black"/>
            <DataGridTextColumn Header="Jan." Binding="{Binding Path=Element[January].Value}" Width="*" Foreground="Black"/>
            <DataGridTextColumn Header="Feb." Binding="{Binding Path=Element[February].Value}" Width="*" Foreground="Black"/>
            <DataGridTextColumn Header="Mar." Binding="{Binding Path=Element[March].Value}" Width="*" Foreground="Black"/>
            <DataGridTextColumn Header="Apr." Binding="{Binding Path=Element[April].Value}" Width="*" Foreground="Black"/>
            <DataGridTextColumn Header="May" Binding="{Binding Path=Element[May].Value}" Width="*" Foreground="Black"/>
            <DataGridTextColumn Header="June" Binding="{Binding Path=Element[June].Value}" Width="*" Foreground="Black"/>
            <DataGridTextColumn Header="July" Binding="{Binding Path=Element[July].Value}" Width="*" Foreground="Black"/>
            <DataGridTextColumn Header="Aug." Binding="{Binding Path=Element[August].Value}" Width="*" Foreground="Black"/>
            <DataGridTextColumn Header="Sep." Binding="{Binding Path=Element[September].Value}" Width="*" Foreground="Black"/>
        </DataGrid.Columns>

        <DataGrid.RowHeaderTemplate>
            <DataTemplate>
                <TextBlock Text="{Binding Path=Element[Depth].Value, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=DataGridRowHeader}}"  Foreground="#9493CF" FontSize="16" />
            </DataTemplate>
        </DataGrid.RowHeaderTemplate>

Answer 1

您不需要Ancestor因为RowHeader也具有与普通列相同的DataContext 。 因此，您可以在那里直接获取Element属性。

但是，在您的情况下，它不起作用意味着..您可能会因为某些错误而离开。 无论如何，以下代码将帮助您解决问题。

 <DataGrid.RowHeaderTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding Path=DataContext.Element[Depth].Value, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=DataGridRow}}"  Foreground="#9493CF" FontSize="16" />
        </DataTemplate>
    </DataGrid.RowHeaderTemplate>