Completely hide WPF window on startup?

I want that my window is completely hidden on the startup. No window, no entry in the taskbar. The user doesn't see, the application is started.

How can I realize that?

Thank you!

An alternative to H.B.'s method is just to set the Visibility to hidden and set ShowInTaskbar to false. This still creates the window and lets it do its thing.

<Window x:Class="WpfApplication2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" ShowInTaskbar="False" Visibility="Hidden">
    <Grid>

    </Grid>
</Window>

Don't show the window. By default there is a StartupUri defined in the App.xaml, remove it and override the OnStartup method in the code-behind to create a window, just Show and Hide it as you wish.

Simply don't create a window, just delete the StartupUri from App.xaml.

It might be helpful to set the Application to ShutDownMode="OnExplicitShutdown" this will prevent that your application shuts down if your last window was closed.

My requirement: Start a process to show a window, and embed it into a wpf control. The window must be loaded normally, trigger initialized/loaded events, then run as child window in control.

My solution: Set the window width and height to 1, after loaded, resize it to normal size. The window will be shown in short time, almost 1 second. User will not notice it.