using Mulaolao.Forms;
using Mulaolao.Procedure;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;
using Mulaolao.Other;
using System.Threading;
using StudentMgr;
using System.Data;
using System.Data.Sql;
using System.Data.SqlClient;

namespace Mulaolao
{
 static class Program
 {
  //private static Mutex mutex;
  /// <summary>
  /// 應(yīng)用程序的主入口點(diǎn)。
  /// </summary>
  [STAThread]
  static void Main( )
  {
   Application.EnableVisualStyles( );
   Application.SetCompatibleTextRenderingDefault( false );
   //讀取表
   DataTable da = SqlHelper.ExecuteDataTable( "SELECT * FROM R_UpdateforOrder" );
   string news = "", old = "";
   //如果表中沒(méi)有任何數(shù)據(jù),則直接登錄,不用更新
    if (da.Rows.Count < 1)
   {
    //設(shè)置登錄成功之后關(guān)閉登錄窗體 顯示主窗體
    Login lg = new Login( );
    lg.StartPosition = FormStartPosition.CenterScreen;
    lg.ShowDialog( );
    if (lg.DialogResult == DialogResult.OK)
    {
     Application.Run( new Form1( ) );
    }
    else
    {
     return;
    }
   }
   else
   {
    //如果表中的新版本和老版本一致,也不需要更新
     news = da.Rows[0]["New"].ToString( );
    old = da.Rows[0]["Old"].ToString( );
    if (news == old)
    {
     //設(shè)置登錄成功之后關(guān)閉登錄窗體 顯示主窗體
     Login lg = new Login( );
     lg.StartPosition = FormStartPosition.CenterScreen;
     lg.ShowDialog( );
     if (lg.DialogResult == DialogResult.OK)
     {
      Application.Run( new Form1( ) );
     }
     else
     {
      return;
     }
    }
    else
    {
     //如果表中的新版本和老版本不一致 則需要把老版本更新成新版本 同時(shí)啟動(dòng)自動(dòng)更新窗口
      SqlHelper.ExecuteNonQuery( "UPDATE R_UpdateforOrder SET Old=@Old", new SqlParameter( "@Old", news ) );
     System.Diagnostics.Process.Start( Application.StartupPath + @"\AutoUpdate.exe" );
    }
   }
   
  }
 }
}