Question

我的CollectionViewSource ItemsSource DataGrid。在Window.Resources我有这个定义：

<CollectionViewSource x:Key="ItemsPoolCollectionView"  
     Source="{Binding Path=MyObservableCollection, Mode=OneWay}" />

现在，我想从代码中生成相同的定义，所以我已经这样做了：

Dim _cvs as CollectionViewSource = New CollectionViewSource
Dim bindSource = New Binding() With {
        .Path = New PropertyPath("MyObservableCollection"),
        .Mode = BindingMode.OneWay }
_cvs.SetValue(CollectionViewSource.SourceProperty, bindSource)

但我在最后一句话中出现了这个错误：

'System.Windows.Data.Binding' is not a valid value for property 'Source'

怎么了？我怎么能做到这一点？

Answer 1

我解决了！ ......这样：

      Dim _cvs as CollectionViewSource = New CollectionViewSource
      Dim bindSource = New Binding() With {
              .Source = Me.DataContext
              .Path = New PropertyPath("MyObservableCollection"),
              .Mode = BindingMode.OneWay }
      BindingOperations.SetBinding(cvs, CollectionViewSource.SourceProperty, bindSource)

Answer 2

您无需绑定CollectionViewSource以使其自动“绑定”;只需直接设置Source属性的值：

Dim _cvs as CollectionViewSource = New CollectionViewSource
_cvs.Source = Me.MyObservableCollection

（抱歉我生锈的VB.net）

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CollectionViewSource源属性上的集合绑定

2 个答案: