WPF Popup focus in data grid

Question

I'm creating a custom UserControl to be used inside a DataGrid editing template. It looks like this:

<UserControl
   x:Class="HR.Controls.UserPicker"
   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:tk="http://schemas.microsoft.com/wpf/2008/toolkit"
   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <Grid>
        <TextBlock x:Name="PART_TextBox" Text="Hello WOrld" />
        <Popup Width="234" Height="175" IsOpen="True" StaysOpen="True"

             Placement="Bottom"
             PlacementTarget="{Binding ElementName=PART_TextBox}"
         >
            <TextBox
                  x:Name="searchTextBox"
                  Text="&gt;Enter Name&lt;"/>
        </Popup>
    </Grid>
</UserControl>

edit: I've narrowed down the code a bit. It seems that if I put a Popup with textbox inside the CellEditingTemplate directly the textbox gets focus no problem. When I move that code into a UserControl I can no longer select the textbox when editing the cell.

Is the UserControl doing something funny with the focus ?

---

The problem is when i edit the cell in the datagrid I get the user control showing up but I can't click in the TextBox searchTextBox. When I click on it the popup closes and the cell goes back to default.

I have tried copying and pasting all the code inside the user control and pasting it directly into the CellEditingTemplate and that interacts the way it should.

I was just wondering if the UserControl did something weird that prevents a popup from gaining focus because it works as expected when directly placed in the CellEditingTemplate ?

Thanks, Raul

Answer 1

Not sure if this will help anyone, but this helps if you have custom controls in the datagrid with a popup..... this fixed my problem, and it was one line of xaml. I spend the whole day re-reading this forum and then looking at the source for DataGridCell. Hope this helps.

    <Style TargetType="{x:Type DataGridCell}">
        <Setter Property="Focusable" Value="False"></Setter>
    </Style>