WPF 两个控件共享数据

<DataGrid  x:Name="deliver" ItemsSource="{Binding Path=deliverdata.data}" Visibility="Collapsed">
                    <DataGrid.Columns>
                        <DataGridTextColumn Width="0.2*"  Binding="{Binding time,  StringFormat=yyyy-MM-dd HH:mm:ss}" Header="时间" />
                        <DataGridTextColumn Width="0.8*"  Binding="{Binding context}" Header="地点和跟踪进度" />
                    </DataGrid.Columns>
                </DataGrid>

引用控件数据

<DataGrid Grid.Row="1" ItemsSource="{Binding ElementName=deliver,Path=ItemsSource}" >
                                                    <DataGrid.Columns>
                                                        <DataGridTextColumn Width="0.2*"  Binding="{Binding time,  StringFormat=yyyy-MM-dd HH:mm:ss}" Header="时间" />
                                                        <DataGridTextColumn Width="0.8*"  Binding="{Binding context}" Header="地点和跟踪进度" />
                                                    </DataGrid.Columns>
                                                </DataGrid>