WPF C# Tutorial

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="150" Width="300">
    
                   Height="23" IsEnabled="False" Margin="10" Name="button2" 
                ToolTipService.ShowOnDisabled="True" Width="200">
            
                ToolTip on a disabled control