Tabchanged event on nested user control

[Mark]

I have a Main form with a tab control where I am trapping the tab change event in the view model.

<i:Interaction.Triggers>
                <i:EventTrigger EventName="SelectionChanged">
                    <i:InvokeCommandAction Command="{Binding TabChanged}"
                             CommandParameter="{Binding ElementName=TCMain}" />
                </i:EventTrigger>
</i:Interaction.Triggers>

Note the element name

In my view model I successfully trap the event for processing relying on the name to identify the tab control

private void tabChanged(object o)
{
    if (o == null) { return; }
    if (o.GetType() == typeof(Telerik.Windows.Controls.RadTabControl))
    {
        if ((o as Telerik.Windows.Controls.RadTabControl).Name != "TCMain")
        {
            return;
        }
    }
}

One of the main window tab items also has a user control which has a tab control called UCTab, it has no tabchanged event processing.

When I change tabs on the UCTab the event on TCMain fires and the name passed to the event in the view model is the TCMain tab.

Is it possible to isolate the UCTab from the event processing.

(I have solved this by changing the UCTab to a standard MS tab control but it is very unsatisfactory).

I have a sample project to demonstrate the problem if required.

 

 

 

 

 

 

 

[Nasko]

Hello Mark,

What we could suggest you for your scenario is instead of using the EventTrigger to use our EventToCommandBehavior. Using it you will be able to pass the event arguments to the Command and thus to find out the TabControl that is invoking it.

We have created a sample project that demonstrates the described above approach. Please, give it a try and let us know if it worked for you.

Hope this helps.

Regards,
Nasko
Telerik by Progress

[Mark]

Thanks Nasko, will get back to you if I have any problems.