Question

I’m trying to have a custom control that requires 2 or more areas of the XAML to be defined by a child control – that inherits from this control. I’m wondering if there’s a way to define multiple contentpresenters and one which acts as the default content presenter

<MyControl>
      <MyControl.MyContentPresenter2>
           <Button Content="I am inside the second content presenter!"/>
      </MyControl.MyContentPresenter2>

      <Button Content="I am inside default content presenter" />
</MyControl>

Is this possible, how do I define this in the custom control’s template?

Answer 1

The template can just bind the separate ContentPresenter instances like this (I’ve only set one property here but you’ll likely want to set others):

<ContentPresenter Content="{TemplateBinding Content1}"/>
<ContentPresenter Content="{TemplateBinding Content2}"/>

The control itself should expose two properties for content and set the default using the ContentPropertyAttribute:

[ContentProperty("Content1")]
public class MyControl : Control
{
    // dependency properties for Content1 and Content2
    // you might also want Content1Template, Content2Template, Content1TemplateSelector, Content2TemplateSelector
}