Question

DataContextDataContext context1 = new DataContextDataContext();
    public MainWindow()
    {
        InitializeComponent();
        DataContext = new ObservableCollection<MyObject>();
        RadGridView1.Filtered+=new EventHandler<GridViewFilteredEventArgs>(RadGridView1_Filtered);
        ObservableCollection<MyObject> _MyObject = new ObservableCollection<MyObject>();
        foreach (var p in context1.Students)
        {
            _MyObject.Add(new MyObject { ID = p.StudentID, Name = p.StudentFN });
        }
    }

    void RadGridView1_Filtered(object sender, GridViewFilteredEventArgs e)
    {
        RadGridView1.ItemsSource = ObservableCollection<MyObject>();
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {

    }
}

public class MyObject
{
    public int ID { get; set; }
    public string Name { get; set; }
}

如何将我的ObservableCollections绑定到ItemsSource？

Answer 1

您想将ItemSource设置为您在构造函数中创建的ObservableCollection的实例：

RadGridView1.ItemsSource = _MyObject;

Answer 2

您可以在代码隐藏/演示者/视图模型中将可观察集合作为公共属性，例如

public ObservableCollection<MyObject> MyObjectCollection {get;set;}

然后你可以填充它，绑定可以是后面的代码。

ItemsSource是一个依赖属性，你可以在XAML或后面的代码中绑定它，比如假设你想绑定到ListBox（比如名为lstItems）ItemsSource，就像（在代码下面考虑'MyObjectCollection'在代码隐藏中

Binding bindingObject = new Binding("MyObjectCollection");
bindingObject.Source = this; //codebehind class instance which has MyObjectCollection
lstItems.SetBinding(ListBox.ItemsSource, bindingObject);

或在XAML中，

<ListBox x:Name="lstItems" ItemsSource="{Binding Path=MyObjectCollection}"/>

对于上述两种方法，您需要设置datacontext为'this'（针对此特定解决方案）。

但是，您可能希望了解基本的WPF数据绑定，您可以在其中了解Depedency属性，绑定对象，绑定模式等。

http://msdn.microsoft.com/en-us/library/aa480224.aspx http://msdn.microsoft.com/en-us/library/ms750612.aspx http://joshsmithonwpf.wordpress.com/2008/05/19/gradual-introduction-to-wpf-data-binding/

如何将ObservableCollections绑定到ItemsSource？

2 个答案: