private void btnContinue_Click(object sender, EventArgs e)
        {
            if( Utils.TextCheck(tbFirstName,tbSurname,tbAge))
            {
                User.Forname = tbFirstName.Text;
                User.Surname = tbSurname.Text;
                User.HasProgrammedBefore = ProgrammedBefore;
                User.HasPorgrammedPythonBefore = ProgrammedPython;
                User.Age = int.Parse(tbAge.Text);

                if (Utilitys.Utils.debugging)
                {
                    MessageBox.Show(this, "You entered: \nForname : " +
                        UserHandler.User.Forname.ToString() +
                        "\nSurname : " + UserHandler.User.Surname.ToString() +
                        "\nAge : " + UserHandler.User.Age.ToString() +
                        "\nHas Programmed Python : " + UserHandler.User.HasPorgrammedPythonBefore.ToString() +
                        "\nHas Programmed before : " + UserHandler.User.HasProgrammedBefore.ToString(),
                        "Debugging !", MessageBoxButtons.OK);
                }
                AppMain app = new AppMain();
                EnableDoubleBuffering();
                app.Show();
                this.Hide();
               }
        }
 public void btnContinue_Click(object sender, EventArgs e)
 {
     if (UserHandler.User.Age  > 0 && !string.IsNullOrEmpty(UserHandler.User.Forname) && !string.IsNullOrEmpty(UserHandler.User.Surname))
     {
         AppMain appMain = new AppMain();
         appMain.Show();
         this.Hide();
     }
     else
     {
         Connection connectionWindow = new Connection();
         EnableDoubleBuffering();
         connectionWindow.Show();
         this.Hide();
     }
 }