public static void FindSequencing_SPT()
 {
     for (int a = 0; a < 5; a++)
     {
         for (int b = 0; b < 4; b++)
         {
             Logics.calc_spt[a, b] = 0;
         }
     }
     DataAccessTier.managementToolsDataContext db = new DataAccessTier.managementToolsDataContext();
     var SPT = from s in db.Sequences
               orderby s.ProceessingTime
               select s.TaskName;
     var calc = from s in db.Sequences
                orderby s.ProceessingTime
                select new { s.ProceessingTime, s.DueDate };
     int i = 0;
     foreach (var a in calc)
     {
         calc_spt[i, 0] = a.ProceessingTime;
         calc_spt[i, 1] = a.DueDate;
         if (i == 0) calc_spt[i, 2] = calc_spt[i, 2] + calc_spt[i, 0];
         else calc_spt[i, 2] = calc_spt[i - 1, 2] + calc_spt[i, 0];
         calc_spt[i, 3] = ((calc_spt[i, 2] - calc_spt[i, 1]) < 0) ? 0 : (calc_spt[i, 2] - calc_spt[i, 1]);
         i++;
     }
     foreach (var a in SPT)
     {
         stk_SPT.Push(a.ToString());
     }
 }
 public static void FindSequencing_SPO()
 {
     for (int a = 0; a < 5; a++)
     {
         for (int b = 0; b < 4; b++)
         {
             Logics.calc_spo[a, b] = 0;
         }
     }
     DataAccessTier.managementToolsDataContext db = new DataAccessTier.managementToolsDataContext();
     var SPO = from s in db.Sequences
               orderby ((Convert.ToDouble(s.DueDate) - Convert.ToDouble(s.ProceessingTime)) / Convert.ToDouble(s.NoOfOperation))
               select s.TaskName;
     var calc = from s in db.Sequences
                orderby ((Convert.ToDouble(s.DueDate) - Convert.ToDouble(s.ProceessingTime)) / Convert.ToDouble(s.NoOfOperation))
                select new { s.ProceessingTime, s.DueDate };
     int i = 0;
     foreach (var a in calc)
     {
         calc_spo[i, 0] = a.ProceessingTime;
         calc_spo[i, 1] = a.DueDate;
         if (i == 0) calc_spo[i, 2] = calc_spo[i, 2] + calc_spo[i, 0];
         else calc_spo[i, 2] = calc_spo[i - 1, 2] + calc_spo[i, 0];
         calc_spo[i, 3] = ((calc_spo[i, 2] - calc_spo[i, 1]) < 0) ? 0 : (calc_spo[i, 2] - calc_spo[i, 1]);
         i++;
     }
     foreach (var a in SPO)
     {
         stk_SPO.Push(a.ToString());
     }
     stk_SPO.Reverse();
 }