我在 DataTemplate 下使用 ItemsControl。我想对 ItemsControl 进行排序ic使用 id 列。
<DataTemplate x:Key="With">
<DockPanel>
<StackPanel DockPanel.Dock="Top" Orientation="Horizontal">
<TextBlock Text="{Binding Path=fil}" Style="{StaticResource Fixed}" Margin="0,0,6,8" />
<mui:ModernButton IconData="{StaticResource PlayIconData}" Click="FullPlayback" Margin="0,0,6,8" ></mui:ModernButton>
</StackPanel>
<StackPanel DockPanel.Dock="Left" Orientation="Horizontal">
<TextBlock Text="{Binding Path=e1}" Foreground="Red" Style="{StaticResource Fixed}" Margin="0,0,6,8" />
<TextBlock Text="{Binding Path=m1}" Foreground="LightSalmon" Style="{StaticResource Fixed}" Margin="0,0,6,8" />
<TextBlock Text="{Binding Path=n1}" Foreground="Orange" Style="{StaticResource Fixed}" Margin="0,0,6,8" />
<TextBlock Text="{Binding Path=m2}" Foreground="LightGreen" Style="{StaticResource Fixed}" Margin="0,0,6,8" />
<TextBlock Text="{Binding Path=m3}" Foreground="Green" Style="{StaticResource Fixed}" Margin="0,0,6,8" />
<TextBlock Text="{Binding ElementName=H1, Path=Items.Count,Mode=OneWay}" Style="{StaticResource Fixed}" Margin="0,0,6,8" />
</StackPanel>
<ItemsControl Name="ic" DockPanel.Dock="Bottom" ItemsSource="{Binding Path=seg}" ItemsPanel="{StaticResource HSPanel}">
<ControlTemplate TargetType="ItemsControl">
<Border>
<ScrollViewer VerticalScrollBarVisibility="Auto">
<ItemsPresenter />
</ScrollViewer>
</Border>
</ControlTemplate>
</ItemsControl.Template>
</ItemsControl>
</DockPanel>
</DataTemplate>
我尝试了以下选项,但排序不起作用。
1.尝试在用户控件的构造函数中进行排序,如下所示(代码隐藏)
ic.Items.SortDescriptions.Clear();
ic.Items.SortDescriptions.Add(new SortDescription("id", ListSortDirection.Ascending));
ic.Items.Refresh();
但我无法访问ic在后面的代码中。错误提示“ic 在当前上下文中不存在”
2.在xaml中的ItemsControl下尝试了CollectionViewSource,但这也不起作用。
<ItemsControl x:Name="ic" DockPanel.Dock="Bottom" ItemsSource="{Binding Path=segments}" ItemsPanel="{StaticResource HSPanel}">
<ItemsControl.Resources>
<CollectionViewSource x:Key="segments" Source="{Binding seg}">
<CollectionViewSource.SortDescriptions>
<scm:SortDescription PropertyName="id" Direction="Ascending"/>
</CollectionViewSource.SortDescriptions>
</CollectionViewSource>
</ItemsControl.Resources>
<ItemsControl.Template>
3.在xaml中的ControlTemplate下尝试了CollectionViewSource,但这也不起作用。
<ControlTemplate TargetType="ItemsControl">
<ControlTemplate.Resources>
<CollectionViewSource x:Key="segments" Source="{Binding seg}" >
<CollectionViewSource.SortDescriptions>
<scm:SortDescription PropertyName="sortId" Direction="Ascending"/>
</CollectionViewSource.SortDescriptions>
</CollectionViewSource>
</ControlTemplate.Resources>
但我初始化了 Loaded 事件ic并尝试从那里进行排序。在这种情况下,最初加载页面时,项目不会排序。但是,当我移至另一个用户控件并返回当前用户控件时,这些项目看起来完美整理。
private void ic_Loaded(object sender, RoutedEventArgs e)
{
ItemsControl ic = (ItemsControl)sender;
ic.Items.SortDescriptions.Clear();
ic.Items.SortDescriptions.Add(new SortDescription("id", ListSortDirection.Ascending));
ic.Items.Refresh();
}