如果我使用相同的ListView
创建多个ItemsSource
,则它们会变得奇怪地相关联。在以下示例中,两个ListView
显示一个公共字符串列表。断言显示两个ItemCollection
和SortDescriptionCollection
是不同的,但如果我尝试以不同方式对ListView
进行排序,则第二个排序顺序将应用于两者。
两个ItemCollection
必须相关才能使Selector.IsSynchronizedWithCurrentItem
属性产生任何影响,但我希望能够打破这种关联,这样我才能做出像我这样的事情在这个例子中尝试过。有谁知道这些集合是如何相关的,以及我如何切断这种关系?
XAML:
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:llv="clr-namespace:LinkedListViews"
x:Class="LinkedListViews.Window1"
x:Name="Window"
Title="Window1"
Width="640" Height="480">
<Grid x:Name="LayoutRoot">
<ListView
x:Name="ListView1"
ItemsSource="{Binding ElementName=Window, Path=Data}"
Margin="75,8,0,8" Width="237" HorizontalAlignment="Left"/>
<ListView
x:Name="ListView2"
ItemsSource="{Binding ElementName=Window, Path=Data}"
HorizontalAlignment="Right" Margin="0,8,73,8" Width="243"/>
</Grid>
</Window>
代码背后:
using System;
using System.IO;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using System.ComponentModel;
using System.Collections.Generic;
namespace LinkedListViews
{
public partial class Window1
{
private List<string> _Data = new List<string>
{
"Alpha", "Beta", "Gamma"
};
public List<string> Data
{
get { return _Data; }
}
public Window1()
{
this.InitializeComponent();
// Insert code required on object creation below this point.
System.Diagnostics.Debug.Assert(ListView1.Items != ListView2.Items);
System.Diagnostics.Debug.Assert(ListView1.Items.SortDescriptions != ListView2.Items.SortDescriptions);
this.ListView1.Items.SortDescriptions.Add(new SortDescription(null, ListSortDirection.Ascending));
this.ListView2.Items.SortDescriptions.Clear();
this.ListView2.Items.SortDescriptions.Add(new SortDescription(null, ListSortDirection.Descending));
}
}
}