WPF DataGrid style

c#, datagrid, wpf

Solution

Before you try to find a solution, look in your `Style/Template` of DataGrid, DataGridRow, etc. a StyleTrigger on Focus (`IsFocused` trigger), because it can not be the default behavior.

If do not have one, try to add `EvenTriggers` for events `GotFocus` and `LostFocus` like this:

<Window.Resources>
    <SolidColorBrush x:Key="GotFocusColor" Color="Green" />
    <SolidColorBrush x:Key="LostFocusColor" Color="Transparent" />

    <Style TargetType="{x:Type DataGridRow}">
        <Setter Property="Foreground" Value="#FFB3B3B3"/>
        <Setter Property="Height" Value="25"/>
        <Setter Property="HorizontalContentAlignment" Value="Stretch"/>

        <Style.Triggers>
            <Trigger Property="IsSelected" Value="True">
                <Setter Property="Background" Value="#FF262626"/>
            </Trigger>

            <Trigger Property="ItemsControl.AlternationIndex" Value="0">
                <Setter Property="Background" Value="#FF383838"/>
            </Trigger>

            <Trigger Property="ItemsControl.AlternationIndex" Value="1">
                <Setter Property="Background" Value="#FF333333"/>
            </Trigger>

            <EventTrigger RoutedEvent="DataGrid.GotFocus">
                <BeginStoryboard>
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background">
                            <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource GotFocusColor}" />
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </BeginStoryboard>
            </EventTrigger>

            <EventTrigger RoutedEvent="DataGrid.LostFocus">
                <BeginStoryboard>
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background">
                            <DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{StaticResource LostFocusColor}" />
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </BeginStoryboard>
            </EventTrigger>
        </Style.Triggers>
    </Style>
</Window.Resources>

Problem

Original source