WPF Command line arguments.

App.xaml
<Application ...
Startup="App_Startup">
...

App.xaml.cs;
...
/// <summary>
/// Interaction logic for App.xaml
/// </summary>
public partial class App : Application
{
    // Storing your arguments in your type you wish:
    public static string Input = "";

    void App_Startup(object sender, StartupEventArgs e)
    {
        // Store the arguments to static public you declared:
        Input = String.Join(" ", e.Args);
    }
}
...

Window1.xaml.cs
...
    /// <summary>
    /// Create window.
    /// </summary>
    public Window1()
    {
        Console.WriteLine(App.Input); // Woohoo! Got the input...
        ...

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See, MSDN, you don't have to be so damn verbose always, when little codespeak would do.