protected void tvTrainTypeChangeCallBack_Callback(object sender, CallBackEventArgs e)
        {
            TrainTypeBLL objTrainType = new TrainTypeBLL();
            TrainType    traintype    = objTrainType.GetTrainTypeInfo(int.Parse(e.Parameters[0]));
            int          cout         = traintype.ParentID == 0 ? tvTrainType.Nodes.Count : tvTrainType.FindNodeById(traintype.ParentID.ToString()).Nodes.Count;

            if (e.Parameters[1] == "MoveUp")
            {
                if (traintype.OrderIndex <= cout && traintype.OrderIndex >= 2)
                {
                    traintype.OrderIndex--;
                    objTrainType.UpdateTrainType(traintype);

                    traintype = objTrainType.GetTrainTypeInfo(int.Parse(tvTrainType.FindNodeById(e.Parameters[0]).PreviousSibling.ID));
                    traintype.OrderIndex++;
                    objTrainType.UpdateTrainType(traintype);
                }
            }
            if (e.Parameters[1] == "MoveDown")
            {
                if (traintype.OrderIndex <= cout - 1 && traintype.OrderIndex >= 1)
                {
                    traintype.OrderIndex++;
                    objTrainType.UpdateTrainType(traintype);

                    traintype = objTrainType.GetTrainTypeInfo(int.Parse(tvTrainType.FindNodeById(e.Parameters[0]).NextSibling.ID));
                    traintype.OrderIndex--;
                    objTrainType.UpdateTrainType(traintype);
                }
            }

            if (e.Parameters[1] == "Insert")
            {
                IList <RailExam.Model.TrainType> objList = objTrainType.GetTrainTypeByWhereClause("1=1", "Train_Type_ID desc");
                hfMaxID.Value = objList[0].TrainTypeID.ToString();
                hfMaxID.RenderControl(e.Output);
            }
            else if (e.Parameters[1] == "Delete")
            {
                hfMaxID.Value = e.Parameters[2];
                hfMaxID.RenderControl(e.Output);
            }

            tvTrainType.Nodes.Clear();
            BindTrainTypeTree();

            tvTrainType.RenderControl(e.Output);
        }