Syle.xml

Syle.xml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:Styles="clr-namespace:MyProject.Wpf.Controls.Styles">

  <!--Setup the look of the tool tips-->
  <Style TargetType="{x:Type ToolTip}">
    <Setter Property="Foreground" Value="#2E2E2E"/>
    <Setter Property="Background">
      <Setter.Value>
        <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
          <LinearGradientBrush.GradientStops>
            <GradientStopCollection>
              <GradientStop Offset="0" Color="#FFFFFF" />
              <GradientStop Offset="1" Color="#D7D2FF" />
            </GradientStopCollection>
          </LinearGradientBrush.GradientStops>
        </LinearGradientBrush>
      </Setter.Value>
    </Setter>
    
    <Setter Property="ContentTemplate">
      <Setter.Value>
        <DataTemplate>
          <Grid>
            <Grid.ColumnDefinitions>
              <ColumnDefinition/>
              <ColumnDefinition Width="Auto"/>
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
              <RowDefinition/>
              <RowDefinition/>
              <RowDefinition/>
            </Grid.RowDefinitions>

            <TextBlock Grid.Row="0" TextWrapping="Wrap" FontWeight="Bold" Text="{Binding Path=(Styles:ToolTip.Title), RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Button}}}"/>
            <TextBlock Grid.Row="0" Grid.Column="1"  HorizontalAlignment="Right" Text="(Alt+N) " />
            <Line Grid.Row="1" Grid.ColumnSpan="2" Stretch="Fill" Margin="0,2,0,5" X1="0" X2="1" Stroke="Gray"/>
            <TextBlock Grid.Row="2" Grid.ColumnSpan="2" TextWrapping="Wrap" Margin="5,0,0,0" Text="{Binding}" />

          </Grid>
        </DataTemplate>
      </Setter.Value>
    </Setter>
  </Style>
</ResourceDictionary>