Textbox will not remain in focus on when in Menu

[Dev]

I have added a text box into a menu with the following code. 

<telerik:RadMenuItem x:Name="EmployeeLookupMenuItem" StaysOpenOnClick="True" >
     <telerik:RadMenuItem.Header>
          <StackPanel>
               <telerik:RadWatermarkTextBox Name="EmployeeLookupTextBox" KeyUp="EmployeeLookupTextBox_KeyUp" WatermarkContent="Employee ID" Width="100" />
          </StackPanel>
     </telerik:RadMenuItem.Header>
</telerik:RadMenuItem>

The text box appears however when I click in it to type something it will only stay in focus while the mouse button is down. As soon as I release the mouse button it loses focus and I can no longer type in the box.

Why can I not type in the textbox?

[Rosen Vladimirov]

Hi Tom,

I've tested your problem and the issue is reproduced only when you click at the end of RadWaterMarkTextBox - if you click directly in the center, you will be able to type. The problem is that at the end of the control there isn't a TextBox which handles the mouse events if you click in the center. So these mouse events are catched by RadMenuItem and treated as click. This is the expected behavior. If you want to write in RadWaterMarkTextBox, no matter where you've clicked, you should "catch" MouseLeftButtonUp event before RadMenuItem. Here is how to achieve this:

<telerik:RadMenuItem Header="Item 1">
    <telerik:RadMenuItem x:Name="EmployeeLookupMenuItem" StaysOpenOnClick="True">
        <telerik:RadMenuItem.Header>
            <StackPanel>
                <telerik:RadWatermarkTextBox Name="EmployeeLookupTextBox" KeyUp="EmployeeLookupTextBox_KeyUp_1" WatermarkContent="Employee ID" Width="100" MouseLeftButtonUp="EmployeeLookupTextBox_MouseLeftButtonUp_1"/>
            </StackPanel>
        </telerik:RadMenuItem.Header>
    </telerik:RadMenuItem>
</telerik:RadMenuItem>

And in code behind:

private void EmployeeLookupTextBox_KeyUp_1(object sender, KeyEventArgs e)
{
    e.Handled = true;
}

private void EmployeeLookupTextBox_MouseLeftButtonUp_1(object sender, MouseButtonEventArgs e)
{
    e.Handled = true;
}

Please test it from your side and inform me if you still have any problems or concerns.

Greetings,
Rosen Vladimirov
the Telerik team

[Dev]

This worked. Thank you.