负载WPF用户控件动态

Question

我有一个抽象基类aComponent和亚类CriteriaList，Question等

对于每个子类两个对应UserControl S的具有名称等，ubCriteriaList，ueQuestion，ubQuestion我有等。（ue代表短为“UserControl与输入元件”，并为ub“UserControl带有按钮”。）

DataContext的是“ControllerClass”与一个属性作为实际aComponent实例的获取者。当aComponent实例更改（例如CriteriaList的实例）时，我想加载相应的UserControl（在本例中为ueCriteriaList和ubCriteriaList）。

我有两个转换器和ueControlConverterubControlConverter内搭类名称（例如CriteriaList），并返回一个UserControl实例（在此情况下，）。

Public Class ueControlConverter 
    Implements IValueConverter 

    Public Function Convert(value As Object, targetType As Type, parameter As Object, 
          culture As System.Globalization.CultureInfo) As Object 
          Implements IValueConverter.Convert 
     Dim aComp As aComponent = value 
     Dim assemblyKlassenname As String = aComp.GetType.ToString 
     Dim assemblyName As String = Left(assemblyKlassenname, 
              assemblyKlassenname.IndexOf(".") + 1) 
     Dim klassenName As String = Right(assemblyKlassenname, 
              assemblyKlassenname.IndexOf(".") - 1) 
     Dim t As Type = Type.GetType(assemblyName & "ue" & klassenName) 
     Dim o As UserControl = Activator.CreateInstance(t) 
     o.DataContext = value 
     Return o 
    End Function 

    Public Function ConvertBack(value As Object, targetType As Type, parameter As Object, 
           culture As System.Globalization.CultureInfo) As Object 
        Implements IValueConverter.ConvertBack 
     Return value 
    End Function 
End Class 

在XAML我有结合Content="{Binding Path=my_aComponent, Converter={StaticResource _ueControlConverter}和秒。显示了右边的UserControl，但没有与my_aComponent绑定。

我该怎么办？

Answer 1

您还需要通过绑定为您的ContentControl对象提供DataContext属性。