WPF DataGrid 绑定BitmapSource

       <DataGrid Name="dg" AutoGenerateColumns="False" IsReadOnly="True" Margin="24,12,0,12" ItemsSource="{Binding}">             <DataGrid.Columns>                                 <DataGridTemplateColumn Header="Image" Width="100" IsReadOnly="True">                     <DataGridTemplateColumn.CellTemplate>                         <DataTemplate>                             <Image Height="80" Source="{Binding BigThumbnail}" />                         </DataTemplate>                     </DataGridTemplateColumn.CellTemplate>                 </DataGridTemplateColumn>             </DataGrid.Columns>         </DataGrid>

绑定一列显示图片