<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:tb="http://www.hardcodet.net/taskbar"
    >

    <!--  Globally declared notify icon (ResourceDictionary is not in use, example only)  -->
    <tb:TaskbarIcon
        x:Key="MyNotifyIcon"
        IconSource="/Icons/Error.ico"
        ToolTipText="hello world"
        />

</ResourceDictionary>