Cannot use a RadWindow as a UserControl inside another RadWindow

[Nitin]

Hello,

I want to use a RadWindow as a user control inside another RadWindow, like as below.

<

 

 

telerik:RadWindow x:Class="MacFellow.WPF.ParentRadWindow"

 

 

 

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

 

 

 

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

 

 

 

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

 

 

 

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

 

 

 

mc:Ignorable="d"

 

 

 

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

 

 

 

d:DesignHeight="300" d:DesignWidth="521">

 

 

 

 

<Grid>

 

 

 

 

<telerik:RadWindow Top="10" Left="10" Height="200" Width="300" Visibility="Visible">

 

 

 

 

<Button x:Name="btnClickMe" Content="Click Me" Width="100"/>

 

 

 

 

</telerik:RadWindow>

 

 

 

 

</Grid>

 

</

 

 

telerik:RadWindow>

 

Now when I click on the button "btnClickMe" it throws an exception "Object reference not set to an instance of object".

Please let me know the reason of the exception and how can it be resolved.

[Miroslav Nedyalkov]

Hello Nitin,

 What you are trying to do is not supported by the RadWindow control - it doesn't support to be placed inside the layout, but only support to be show using its Show or ShowDialog methods.

Sincerely yours,
Miroslav Nedyalkov
the Telerik team