NullReferenceException with RadListPicker

[Pat]

 I am getting a Null reference when trying to use the ListPicker

The call stack is below

> Telerik.Windows.Controls.Primitives.dll!Telerik.Windows.Controls.RadSelector.f(int A_0 = 0x00000002) + 0x14 bytes 
  Telerik.Windows.Controls.Primitives.dll!Telerik.Windows.Controls.RadSelector.OnApplyTemplate() + 0x48 bytes 
  Telerik.Windows.Controls.Input.dll!Telerik.Windows.Controls.RadListPicker.OnApplyTemplate() + 0x6 bytes 

The XAML to create the ListPicker is

                <StackPanel Orientation="Horizontal">
                    <TextBlock Name="NameFieldBlock" Margin="10" MinWidth="160" TextAlignment="Right">Name field:</TextBlock>
                    <telerikInput:RadListPicker InlineModeThreshold="4" Name="NameFieldList">
                        
                    </telerikInput:RadListPicker>
                </StackPanel>
 

I have set the ItemsSource to be  a list of strings. I have also set the Header to be "".

Any suggestions for what I am doing wrong.

Thanks

[Georgi]

Hi Pat,

Thank you for contacting us.

We recently found a bug - a NullReferenceException - with our list picker. The problem occurs when the picker has no or empty ItemsSource and setting its IsExpanded property to true. Otherwise the control should behave as expected - I verified it on my side.

Could you please prepare a simple project that demonstrates the issue so that I may debug it and isolate the cause.

Thank you for your time, I am looking forward to your reply.

All the best,
Georgi
the Telerik team

[Pat]

I believe I was hitting the problem you described. I  was not setting up the ItemsSource correctly and when I checked it with the debugger the ItemsSource was not set. After settting the ItemsSource the problem went away.

Thanks for the prompt response.

Pat

[Derek]

This is still an issue.  Having the ItemsSource bound to a collection that is null or contains 0 items, once the ListPicker is tapped it throws a NullReference Exception.

[Georgi]

Hello Derek,

Yes, having an empty ItemsSource will also generate the problem. We are planning a service pack within somewhere 10 days that will fix this as well as some other minor bugs.

Best wishes,
Georgi
the Telerik team

[Derek]

Great, thanks!

[vbguru .]

I've tested your windows phone 7 package in a VMWare environment some time ago and I had that same issue.........

Is there a service pack available ??

Will it be ok to test it again to verify that it's ok before purchasing it ???

It's urgent....... We have a very strick deadline for a new project and your phone 7 package is the best I've tested (except that issue) !!!

Thank you......... Wait for your response......... 

[Deyan]

Hi vbguru,

I can confirm that this issue is no longer present in our latest release.

Let me know in case you have further questions or need assistance.

Regards,
Deyan
the Telerik team