WPF的新手
这是Xaml代码需要将所有选定的ListView项放入选择更改的事件
我试图与Multiselecttreeview nuget一起使用，但问题是在这种情况下父级和子级都相同。 TreeviewEX也可以这样做。任何帮助都会很棒。
<Window x:Class="DemoApps.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:DemoApps"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Grid>
<TreeView x:Name="TreeViewList" Loaded="TreeViewList_Loaded">
<TreeView.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type local:Group}" ItemsSource="{Binding Users}" >
<Grid Width="200" Height="auto">
<StackPanel>
<TextBlock Text="{Binding GroupName}"/>
</StackPanel>
</Grid>
<HierarchicalDataTemplate.ItemTemplate>
<DataTemplate DataType="{x:Type local:User}">
<ListView Selectionmode="Extended" SelectionChanged="ListView_SelectionChanged">
<Grid Width="150" Height="20">
<StackPanel>
<TextBlock Text="{Binding username}" />
</StackPanel>
</Grid>
</ListView>
</DataTemplate>
</HierarchicalDataTemplate.ItemTemplate>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
<TreeView.ItemContainerStyle>
<Style TargetType="TreeViewItem">
<Setter Property="IsSelected" Value="{Binding IsSelected}" />
<Setter Property="IsExpanded" Value="{Binding IsExpanded}" />
</Style>
</TreeView.ItemContainerStyle>
</TreeView>
</Grid>
</Window>
这是我后面的代码
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Windows;
using System.Windows.Controls;
namespace DemoApps
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public ObservableCollection<Group> GroupData { get; set; }
public MainWindow()
{
InitializeComponent();
GroupData = GetDummyData();
}
private ObservableCollection<Group> GetDummyData()
{
var _group = new ObservableCollection<Group>();
for (int i = 0; i < 20; i++)
{
_group.Add(new Group
{
GroupName = "Group name" + i,Users = GetDummyUsers(i)
});
}
return _group;
}
private ObservableCollection<User> GetDummyUsers(int i)
{
var _user = new ObservableCollection<User>();
for (int j = 0; j < 10; j++)
{
_user.Add(new User
{
username = "User " + i + "-" + j
});
}
return _user;
}
private void TreeViewList_Loaded(object sender,RoutedEventArgs e)
{
TreeViewList.ItemsSource = GroupData;
}
private void ListView_SelectionChanged(object sender,SelectionChangedEventArgs e)
{
//Need to get all selected items from List View.
//Here i need to get the selected items
}
}
public class Group : TreeViewItemBase
{
public string GroupName { get; set; }
public ObservableCollection<User> Users { get; set; }
}
public class User
{
public string username { get; set; }
}
public class TreeViewItemBase : INotifyPropertyChanged
{
private bool isSelected;
public bool IsSelected
{
get { return this.isSelected; }
set
{
this.isSelected = value;
NotifyPropertyChanged("IsSelected");
}
}
private bool isExpanded;
public bool IsExpanded
{
get { return this.isExpanded; }
set
{
this.isExpanded = value;
NotifyPropertyChanged("IsExpanded");
}
}
public event PropertyChangedEventHandler PropertyChanged;
public void NotifyPropertyChanged(string propName)
{
if (this.PropertyChanged != null)
this.PropertyChanged(this,new PropertyChangedEventArgs(propName));
}
}
}
如何使ListView的所有选定项都进入Selection更改事件