如何在c#中单击Select_All
按钮时检查列表框中的所有复选框。
这是我的XAML
:
<StackPanel Width="400" Orientation="Horizontal" Grid.Row="0">
<AppBarButton x:Name="Btn_SelectAll" Margin="20,0,0,0" Label="Select All" Icon="SelectAll" Click="Btn_SelectAll_Click" FontWeight="Bold" />
<AppBarButton x:Name="Btn_Delete" Margin="150,0,0,0" Label="Delete All" Icon="Delete" Click="DeleteAll_Click" FontWeight="Bold" />
</StackPanel>
<ListBox x:Name="listBoxobj" Background="Transparent" Margin="6" Height="auto" BorderThickness="2" MaxHeight="580" Grid.Row="1" SelectionChanged="listBoxobj_SelectionChanged">
<ListBox.ItemTemplate>
<DataTemplate>
<CheckBox Name="Option1CheckBox" VerticalAlignment="Center" Margin="5,0,0,0" />
<TextBlock x:Name="NameTxt" TextWrapping="Wrap" Text="{Binding Name}" VerticalAlignment="Center" HorizontalAlignment="Left" FontSize="22" Foreground="White"/>
<TextBlock x:Name="Age" TextWrapping="Wrap" VerticalAlignment="Center" HorizontalAlignment="Left" Foreground="White" FontSize="22" Text="{Binding Age}" />
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
列表框中的数据是从数据库中填充的,因此当用户点击SelectAll时,应检查所有复选框。
答案 0 :(得分:0)
在CodeBehind中创建一个公共/受保护的字段,如
protected bool SelectAll = false;
在Btn_SelectAll_Click
eventhandler中,设置SelectAll = true;
使用SelectAll字段绑定Option1CheckBox
IsChecked
属性,如下所示:
<CheckBox Name="Option1CheckBox" VerticalAlignment="Center" Margin="5,0,0,0" IsChecked="{Binding SelectAll}" />