<Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="CommandLineArgumentSample.App" StartupUri="MainWindow.xaml" Startup="app_Startup" /> //File:App.xaml.cs namespace CommandLineArgumentSample { using System; using System.Collections; using System.Text.RegularExpressions; using System.Windows; public partial class App : Application { void app_Startup(object sender, StartupEventArgs e) { if (e.Args.Length == 0) return; foreach (string arg in e.Args) { Console.WriteLine(arg); } } } }