WPF：后台获取DataGrid列的绑定字段。

前台：

 <DataGrid Name="dg" AutoGenerateColumns="False">            <DataGrid.Columns>                <DataGridTextColumn Binding="{Binding Path=id}"/>                <DataGridTextColumn Binding="{Binding Path=name}"/>            </DataGrid.Columns>        </DataGrid>

后台：

  DataGridTextColumn dgcol = dg.Columns[0] as DataGridTextColumn;            Binding binding = dgcol.Binding as Binding;            string path = binding.Path.Path;