App.xaml.cs

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;

namespace Power_Control_Panel
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : Application
    {

        protected override void OnStartup(StartupEventArgs e)
        {
            base.OnStartup(e);


            if (String.Equals("C:\\Windows\\System32", Directory.GetCurrentDirectory(), StringComparison.OrdinalIgnoreCase))
            {
                Task.Factory.StartNew(() =>
                {


                    //since we're not on the UI thread
                    //once we're done we need to use the Dispatcher
                    //to create and show the main window
                    this.Dispatcher.Invoke(() =>
                    {
                        //initialize the main window, set it as the application main window
                        //and close the splash screen
                        var mainWindow = new MainWindow();
                        this.MainWindow = mainWindow;
                        mainWindow.Show();
                  
                    });
                });
            }
            else
            {


                //initialize the splash screen and set it as the application main window
                var splashScreen = new SplashScreenStartUp();
                this.MainWindow = splashScreen;
                splashScreen.Show();

                Task.Factory.StartNew(() =>
                {


                    //since we're not on the UI thread
                    //once we're done we need to use the Dispatcher
                    //to create and show the main window
                    this.Dispatcher.Invoke(() =>
                    {
                        //initialize the main window, set it as the application main window
                        //and close the splash screen
                        var mainWindow = new MainWindow();
                        this.MainWindow = mainWindow;
                        mainWindow.Show();
                        splashScreen.Close();
                    });
                });

            }

            //in order to ensure the UI stays responsive, we need to
            //do the work on a different thread
         
        }
    }
}