c# - WPF Changing ContentControl Template via Button from another control

Question

I have the following controls/views:

• myControl containing a ContentControl and two ControlTemplates in the UserControl.Resources
• Main application (Window) with an instance of myControl and a ToggleButton

---

I want to switch between my two ControlTemplates via the ToggleButton in the main application.

This should be very easy ... but I cannot find a proper way :S

Answer 1

一个更简单的解决方案是绑定到内容控件的内容属性并为每种类型的内容定义数据模板。

<Window.Resources>

    <DataTemplate DataType="{x:Type local:MyType1}">
        <Border Background="Red" />
    </DataTemplate>

    <DataTemplate DataType="{x:Type local:MyType2}">
        <Border Background="Green" />
    </DataTemplate>

</Window.Resources>

---

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="*" />
        <RowDefinition Height="24" />
    </Grid.RowDefinitions>
    <ContentControl Content="{Binding MyContent}" />
    <ToggleButton Grid.Row="1"
                  Content="Toggle"
                  IsChecked="{Binding IsChecked}" />
</Grid>

---

//DataContext
public bool IsChecked
{
  get { return isChecked_; }

  set 
  { 
    isChecked_ = value;
    NotifyPropertyChanged_("IsChecked");

    if (value)
      MyContent = new MyType1();
    else
      MyContent = new MyType2();
  }
}

public object MyContent
{
    get { return myContent_; }
    set 
    {
       myContent = value;
       NotifyPropertyChange_("MyContent");
    }

}