Code behind access to controls inside a DataTemplate?

[Rob Ainscough]

I'm using the RadGridView - RowsDetailsTemplate - where I have a DataTemplate setup.

Having NO LUCK trying to reference/access controls I have in my DataTemplate from code behind (all the controls do have x:Name=). I want to be able to handle a Click event on a button I have in my DataTemplate ... can't find anyway to do this. (VB side).

I've read several similar questions but no one actually posted a solution or sample code.

Some suggestions so far:

1. Setup a class to handle the event and bind to that class -- don't really want to setup an entire class just to handle a simple click event from one control.

2. Another suggest was load the DataTemplate and "Find" the control and then add a handler for the control -- again seems like a lot of work to and I'm guessing pretty slow performance wise.

I'm relatively new to Silverlight 4 so there is a good possibility I'm missing something obvious, but how is one supposed to access DataTemplate controls and events from code behind?

[Maya]

Hi Rob Ainscough,

Indeed, when a control is placed inside a DataTemplate, you cannot reach it through its Name attribute. What you can try is to define the event in xaml and handle it directly in code-behind:

XAML:
<telerik:RadGridView.RowDetailsTemplate>
                <DataTemplate>
                    <telerik:RadButton Content="MyButton" Click="RadButton_Click" />
                </DataTemplate>
            </telerik:RadGridView.RowDetailsTemplate>

Code-behind:
private void RadButton_Click(object sender, RoutedEventArgs e)
        {

        }

Will that approach fits into your scenario ? 
 

Kind regards,
Maya
the Telerik team

[Rob Ainscough]

Excellent, that did the trick by adding the Click="event".

But I'm still somewhat confused on DataTemplate usage.  The Telerik online examples for RadGridView uses DataTemplate for the RowDetailsTemplate ... as far as I know there is no other way to use RowDetailsTemplate other than specifying a DataTemplate?

So how exactly am I going to access the other controls in my DataTemplate (beyond just responding to a Button click event) to be populated when I expand RowDetails from the parent RadGridView?

Sorry if the question is Noobish in nature.

[Maya]

Hi Rob Ainscough,

Indeed, you have to define DataTemplate inside the RowDetails. I will recommend you to run through our online documentation for additional reference. You can also take a look at the LoadingRowDetails event and examine the DetailsElement - this is the one containing all elements in row details.
Furthermore, you can get those elements from the corresponding row. You can read this blog post for a reference on how to get child and parent visual items.
 

Kind regards,
Maya
the Telerik team