WPF UserControl with multiple Children

Question

I have a UserControl that I would like to be able to have more than one child. It already has StackPanel as it's child, so what am I doing wrong?

Ultimately, I'd like for the control to include some of its own children automatically and then, when it's used, allow placing more children inside one of its elements. I tried MSDN's How to Override the Logical Tree without success.

Thanks in advance.

LayerPanelItem.xaml:

<UserControl x:Class="Controls.LayerPanelItem" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <StackPanel></StackPanel> </UserControl>

Main.xaml:

<controls:LayerPanelItem> <TextBlock>Test</TextBlock> <TextBlock>Test</TextBlock> <!-- Error: The property 'Content' is set more than once. --> </controls:LayerPanelItem>

Reed Copsey · Accepted Answer · 2010-02-17 00:00:19Z

2

You can't do this (directly) with a UserControl. Instead, you'll need to derive from ItemsControl, and put your own custom layout logic in the subclass.

answered Feb 17, 2010 at 0:00

Reed Copsey

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1 Comment

Ray Burns Over a year ago

Reed is correct. Here's why you can't do it: When the XAML in LayerPanelItem.xaml is processed, UserControl's Content property is set. So you are effectively trying to use Content for two different purposes.

Kishore Kumar · Accepted Answer · 2012-09-24 05:21:56Z

-1

Try to add Grid in your UserControl and add rest of child to that grid.

answered Sep 24, 2012 at 5:21

Kishore Kumar

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