Question

I want to make program name Cyan Pembuat Soal(Cyan Question Maker) I add the startup event to this Code:

using System;
using System.Windows;

namespace Cyan_Pembuat_Soal {
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : Application {
        private void Application_Startup(object sender, StartupEventArgs e){
            if (FindPlace(e.Args) != null) {
                Cyan_Pembuat_Soal.MainWindow a = new Cyan_Pembuat_Soal.MainWindow();
                a.Activate();
            } else {
                Cyan_Pembuat_Soal.MainWindow a = new Cyan_Pembuat_Soal.MainWindow();
                a.Activate();
                a.Closed += delegate(object senders, EventArgs es) {this.Shutdown();};
            }
        }
        private static string FindPlace(string[] a) {
            if (a.Length == 0) {
                return null;
            }
            int b = 0;
            System.Uri c;
            for (b = 0; b < a.Length; b++) {
                if(Uri.TryCreate(a[b], UriKind.RelativeOrAbsolute, out c)){
                    break;
                }
            }
            c = null;
            return a[b];
        }
    }
}

But that code did not work properly. What’s wrong in this program?

Answer 1

I would try to add a.ShowDialog(); or a.Show(); in addition to a.Activate();.

Not sure why you are using Activate(), but make sure that it does what you want it do to.
http://msdn.microsoft.com/en-us/library/system.windows.window.activate.aspx