XAML中的WPF ListView绑定ItemsSource

我有一个简单的XAML页面，其上有一个像这样定义的ListView

在我做的代码中： –

 public ObservableCollection People { get; set; } public ListView() { InitializeComponent(); this.People = new ObservableCollection(); this.People.Add(new Person() { Name = "John Doe", Age = 42, Mail = "[e-mail]" }); this.People.Add(new Person() { Name = "Jane Doe", Age = 39, Mail = "[e-mail]" }); this.People.Add(new Person() { Name = "Sammy Doe", Age = 7, Mail = "[e-mail]" }); } 

如果我在后面的代码中设置listview的ItemsSource，就像这样

 lvUsers.ItemsSource = this.People; 

它工作，我的网格按预期显示

但是，如果我删除该行并尝试绑定XAML

它不再有效。

为什么XAML中的绑定不起作用？

Answer 1

如果您还没有这样做，例如在XAML中，您需要为绑定设置DataContext 。 此外，由于People属性未实现INotifyPropertyChanged您可能希望在InitializeComponent之前创建此列表，至少在设置DataContext之前，确保在评估绑定时列表已准备就绪。 您可以稍后添加到ObservableCollection但如果您在该点之后创建它而不通知UI它将无法工作

 public ListView() { this.People = new ObservableCollection(); InitializeComponent(); this.DataContext = this; this.People.Add(new Person() { Name = "John Doe", Age = 42, Mail = "[e-mail]" }); this.People.Add(new Person() { Name = "Jane Doe", Age = 39, Mail = "[e-mail]" }); this.People.Add(new Person() { Name = "Sammy Doe", Age = 7, Mail = "[e-mail]" }); } 

Answer 2

将此行放在xaml.cs中的现有代码之后

 this.DataContext = People; 

并用你的xaml替换

 ItemsSource="{Binding People}" 

至

 ItemsSource="{Binding}"