Telerik Popup crashes on Silverlight

[Gustavo]

Hi there!

I'm trying to shows a telerik popup from a button but I get an NullReferenceException because I don't know how implement it. Please give me a hand. This is my code:

                                    <telerik:RadButton Command="{Binding Path=DataContext.LockInfoCommand, RelativeSource={RelativeSource FindAncestor, AncestorType=telerik:RadGridView}}"  
                                                       CommandParameter="{Binding}">
                                        <telerik:RadButton.Content>
                                            <StackPanel>
                                            <Image Source="/SLIcebar;component/Assets/Images/lock.png" Width="10" Height="10"
                                               Visibility="{Binding Path=IsLocked, Converter={StaticResource VisibleIfTrue}}" 
                                               ToolTipService.ToolTip="{Binding Path=LockInfo}"/>
                                            </StackPanel>
                                        </telerik:RadButton.Content>
                                        
                                    </telerik:RadButton>
                                    <telerik:Popup IsOpen="{Binding Path=DataContext.OpenPopup, Mode=TwoWay, RelativeSource={RelativeSource FindAncestor, AncestorType=telerik:RadGridView}}"
                                                   CloseOnOutsideClick="True" >
                                        <telerik:Popup.Content>
                                           <telerik:RadWindow>
                                               <Grid>
                                                   <TextBlock Text="TEST"></TextBlock>
                                               </Grid>
                                           </telerik:RadWindow>
                                        </telerik:Popup.Content>
                                    </telerik:Popup>

 

Thanks a ton in advance

[Kalin]

Hi Gustavo,

Note the Silverlight Popup implementation is intended for internal use only. What I can suggest you for achieving such scenarios would be to use our DropDownButton. Or if you need to show RadWindow on button click - you should be doing that in the code behind - it is not good practice to define RadWindow in XAML (for more details about the usage check this article).

Hope this helps.

Regards,
Kalin
Telerik

[Gustavo]

Hi Kalin,

First of all, thanks for your reply and help. I'm trying to show a popup with some info, I was guessing that this control can help me with this. It has two properties that's look pretty cool, like CloseOnOutsideClick and Placement. I hope I could use it.