using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using WindowsFormsApplication3.Enums;using WindowsFormsApplication3.FormPage;namespace WindowsFormsApplication3{    public partial class FrontPage : Form    {        protected TroubleshootMode troubleshootMode;        public FrontPage()        {            InitializeComponent();        }        private void radioButtonUserMode_CheckedChanged(object sender, EventArgs e)        {            troubleshootMode = TroubleshootMode.UserMode;        }        private void radioButtonExpertMode_CheckedChanged(object sender, EventArgs e)        {            troubleshootMode = TroubleshootMode.ExpertMode;        }        private void FormMode() {             switch (troubleshootMode) {                case(TroubleshootMode.UserMode):                    UserMainForm umf = new UserMainForm();                    Application.Run(umf);                    break;                case(TroubleshootMode.ExpertMode):                    ExpertMainForm emf=new ExpertMainForm();                    Application.Run(emf);                    break;            }        }        private void buttonTroubleshoot_Click(object sender, EventArgs e)        {            System.Threading.Thread t = new            System.Threading.Thread(new System.Threading.ThreadStart(FormMode));            t.Start();            this.Close();        }    }}