WPF 绑定到用户控件的属性

Question

I have an usercontrol, which have a property Results . This usercontrol should show this ObservableCollection . I think the XAML-Code of the usercontrol doesn't matter. The Code-Behind look like that:

Public Property Results() As ObservableCollection(Of ResultModel)
    Get
        Return GetValue(ResultsProperty)
    End Get

    Set(ByVal value As ObservableCollection(Of ResultModel))
        SetValue(ResultsProperty, value)
    End Set
End Property

Public Shared ReadOnly ResultsProperty As DependencyProperty = _
                       DependencyProperty.Register("Results", _
                       GetType(ObservableCollection(Of ResultModel)), GetType(ResourcesGridData), _
                       New FrameworkPropertyMetadata(Nothing))

In my MainView.xaml I have the following XAML-Code to show the usercontrol:

<controls:ResourcesGridData Results="{Binding Path=ResultsToShow}" />

I want to bind the ResultsToShow property of the MainViewModel to the property of the usercontrol.

But now I get the following error:

System.Windows.Data.BindingExpression ist kein Wert des Typs ASSESS.Data.ResultModel und kann in dieser generischen Auflistung nicht verwendet werden.

I try to translate it:

System.Windows.Data.BindingExpression is not a value of the type ASSESS.Data.ResultModel and can not be used in this generic list.

Answer 1

Okay, it's very simple. In my case, I don't need any properties in the usercontrol code-behind.

In the MainView I simply write this:

<controls:ResourcesGridData />

and in the usercontrol:

ItemsSource="{Binding ResultsToShow}"

I directly bind to the Property of the DataContext of the MainView.