WPF数据网格无法选择行

本文关键字：选择 网格 数据 数据网 WPF | 更新日期: 2023-09-27 18:11:22

我使用tabcontrol，在我的tabcontrol中有两个选项卡，然后每个选项卡中有一个数据网格。但是，现在我可以在第一个数据网格中选择行，但不能在第二个数据网格中选择行。我不知道为什么我不能在第二个数据网格中选择行。

下面是我的xaml: 
<TabControl Height="547" HorizontalAlignment="Left" Margin="12,14,0,0" Name="ManageTab" VerticalAlignment="Top" Width="768" Grid.RowSpan="2" 
                    SelectionChanged="ManageTab_SelectionChanged">
            <TabItem Header="STUT" Name="tab1">
                <Grid Height="520" Width="765" DataContext="{StaticResource UserViewSource}">
                    <DataGrid AutoGenerateColumns="False" EnableRowVirtualization="True" Height="514" HorizontalAlignment="Left" 
                  ItemsSource="{Binding}" Name="UserDataGrid" RowDetailsVisibilityMode="VisibleWhenSelected"
                  AlternatingRowBackground="LightBlue" VerticalContentAlignment="Center"
                  HorizontalGridLinesBrush="Gray" VerticalGridLinesBrush="Gray"
                  VerticalAlignment="Top" Width="346" SelectedCellsChanged="UserDataGrid_SelectedCellsChanged">
                        <DataGrid.Columns>
                            <DataGridTextColumn x:Name="AccColumn" Binding="{Binding Path=Acc}" Header="Account" Width="80" IsReadOnly="True" />
                            <DataGridTextColumn x:Name="NameColumn" Binding="{Binding Path=Name}" Header="Name" Width="80" IsReadOnly="True" />
                        </DataGrid.Columns>
                    </DataGrid>
                    <Button Content="Exit" Height="49" HorizontalAlignment="Left" Margin="669,0,0,110" Name="btnExit" VerticalAlignment="Bottom" Width="75" Click="btnExit_Click" />
                </Grid>
            </TabItem>
            <TabItem Header="CLASS" Name="tab2">
                <Grid Height="508" Width="753" DataContext="{StaticResource ClassViewSource}">
                    <DataGrid AutoGenerateColumns="False" EnableRowVirtualization="True" Height="514" HorizontalAlignment="Left" 
                                  ItemsSource="{Binding}" Margin="6,2,0,0" Name="ClassDataGrid" RowDetailsVisibilityMode="VisibleWhenSelected"
                                  AlternatingRowBackground="LightBlue" VerticalContentAlignment="Center"
                                  HorizontalGridLinesBrush="Gray" VerticalGridLinesBrush="Gray"
                                  VerticalAlignment="Top" Width="342" SelectedCellsChanged="ClassDataGrid_SelectedCellsChanged">
                        <DataGrid.Columns>
                            <DataGridTextColumn x:Name="ClassNameColumn" Binding="{Binding Path=ClassName}" Header="ClassName" Width="280" />
                        </DataGrid.Columns>
                    </DataGrid>
                    <Button Content="Exit" Height="49" HorizontalAlignment="Left" Margin="672,0,0,178" Name="btnExit2" VerticalAlignment="Bottom" Width="75" Click="btnExit_Click"/>
                </Grid>
            </TabItem>
        </TabControl>

WPF数据网格无法选择行

最后，我发现我把我的UserViewSource = ((CollectionViewSource)(this.FindResource("UserViewSource")));在cs文件到Window_Loaded函数。然后，它就起作用了。原来，我把它放在Tab_selectionchanged函数中。

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