StyleSelector not working on RadGridView when SelectAll from code

[Javier]

Hello,

I have a custom Style Selector to modify rows backgorund when selected or mouse over in a RadGridView. The style selector  works as expected when I select an item or do a multiple selection.

The problem comes when I perform a SelectAll() in my VM (or codeBehind). In this case the StyleSelector is not apply and is aparently  using the default style for selected items. 

Curiously it does work correctly when I select all the elements with the keyboard shortcut( ctrl + A)

Here is the style selector code:

<deltaTemplate:LastFoundInUpdateStyle x:Key="LastFoundInUpdateStyle">
            <deltaTemplate:LastFoundInUpdateStyle.GridViewRowCoreStyle>
                <Style TargetType="telerik:GridViewRow">
                    <Setter Property="Background" Value="#FFFFFFFF"/>
                    <Setter Property="SelectedBackground" Value="#FFE0E0E0"/>
                    <Setter Property="MouseOverBackground" Value="#FFF5F5F5"/>
                </Style>
            </deltaTemplate:LastFoundInUpdateStyle.GridViewRowCoreStyle>
            <deltaTemplate:LastFoundInUpdateStyle.LastFoundInUpdateGridViewRowCoreStyle>

                <Style TargetType="telerik:GridViewRow">
                    <Setter Property="Background" Value="LightGoldenrodYellow"/>
                    <Setter Property="SelectedBackground" Value="#FFF9F964"/>
                    <Setter Property="MouseOverBackground" Value="#FFF9F964"/>
                </Style>
            </deltaTemplate:LastFoundInUpdateStyle.LastFoundInUpdateGridViewRowCoreStyle>
        </deltaTemplate:LastFoundInUpdateStyle>

And the RadGridView :

 <telerik:RadGridView              
                Grid.Row="0"
                Margin="0,0,0,10"
                x:Name="JobcardGridView"
                SelectionMode="Extended"
                ItemsSource="{Binding JobcardViewItemQueryableCollection}"
                Style="{StaticResource RadGridViewJobcardRawReviewStyle}"
                LeftFrozenColumnCount="2" 
                FilterOperatorsLoading="JobcardGridView_FilterOperatorsLoading"
                FilteringDropDownStaysOpen="False"
                HeaderRowStyle="{StaticResource GridViewHeaderRowStyle}"
                AlternateRowStyleSelector="{StaticResource LastFoundInUpdateStyleAlternate}"
                RowStyleSelector="{StaticResource LastFoundInUpdateStyle}">

Any idea where the problem might be?

Thanks in advance

[Stenly]

Hello Javier,

Thank you for reaching out to us.

I have created a sample project to test the mentioned issue and indeed when using SelectAll method in code-behind the rows turn grey. This is because the focus is not on the cells and thus they mismatch the selected color.

To change this behavior, set the EnableLostFocusSelectedState property of the data grid to False. By setting it to False the selected rows won't turn grey when the data grid loses the focus. The following code snippet shows how:

<telerik:RadGridView EnableLostFocusSelectedState="False">

Also the following documentation explains about the EnableLostFocusSelectedState property:

WPF DataGrid | Stop Showing the Unfocused State | Telerik UI for WPF

I am attaching the sample project for your convenience. I hope it solves the issue you have.

If you need further assistance I will be glad to help.

Regards,
Stenly
Progress Telerik

[Javier]

Hi Stenly,

That solve my issue. 

Thanks for quickly support.

Thanks!