如何使用单选按钮REPOST排列列表框中的项目

Question

好的，所以我希望能够在单击单选按钮'all'时显示列表框中的所有信息。我还希望能够在单击“玩家”单选按钮时“仅”显示玩家，对于经理也是如此。有帮助吗？谢谢！

class Create 
{ 
    public enum Job { Player, Manager } 
    public string Name { get; set; } 
    public int Age { get; set; } 
    public Job Porm { get; set; } 

    public Create(string name, int age, Job porm) 
    { 
        Name = name; Age = age; Porm = porm; 
    } 

    public override string ToString() 
    { 
        return string.Format("Name: {0} - Age {1} - {2}", Name, Age, Porm); 
    } 
} 

---

public partial class MainWindow : Window 
{ 
    public MainWindow() 
    { 
        InitializeComponent(); 
        ObservableCollection<Create> playersAndManagers; 
        playersAndManagers = new ObservableCollection<Create>();
        Create newPlayer1 = new Create("John Terry", 27, Create.Job.Player);
        Create newManager1 = new Create("jose mourinho", 51, Create.Job.Manager);
        Create newPlayer2 = new Create("Wayne Rooney", 23, Create.Job.Player);
        Create newPlayer3 = new Create("David Beckham", 37, Create.Job.Player);
        Create newManager2 = new Create("David Moyes", 55, Create.Job.Manager);
        playersAndManagers.Add(newPlayer1);
        playersAndManagers.Add(newManager1);
        playersAndManagers.Add(newPlayer2);
        playersAndManagers.Add(newPlayer3);
        playersAndManagers.Add(newManager2);
        lbxInfo.ItemsSource = playersAndManagers;
    } 
}

---

<Window x:Class="example1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"> 
<Grid> 
<ListBox x:Name="lbxInfo" HorizontalAlignment="Left" Height="207" Margin="66,71,0,0" VerticalAlignment="Top" Width="368"/>
<RadioButton x:Name="rbtnAll" Content="All" HorizontalAlignment="Left" Margin="66,28,0,0" VerticalAlignment="Top"/> 
<RadioButton x:Name="rbtnPlayers" Content="Players" HorizontalAlignment="Left" Margin="203,28,0,0" VerticalAlignment="Top"/>
<RadioButton x:Name="rbtnManagers" Content="Managers" HorizontalAlignment="Left" Margin="352,28,0,0" VerticalAlignment="Top"/> 
</Grid> 
</Window>

---

Answer 1

可观察的集合非常棘手，它们缺少普通List<T>的所有奇特功能。我建议你有一个List包含所有数据，第二个集合包含你想要显示的数据。

要显示所有数据，您只需说明

lbxInfo.ItemsSource = playersAndManagers;

当您只想显示经理时：

lbxInfo.ItemsSource = playersAndManagers.Where(m => m.Porm == Job.Manager)

仅展示球员：

lbxInfo.ItemsSource = playersAndManagers.Where(p => p.Porm == Job.Player)

如果playersAndManagers - 列表在您的应用程序中发生更改，则不会更新显示的列表。如果您要修改应用程序中的列表并保持ListBox更新，那么最简单的方法是创建一个具有属性的自定义列表，该列表可以返回ObservableCollection并保持更新