protected void btnGo_Click(object sender, EventArgs e)
        {
            try
            {
                EWA_Common objEWA = new EWA_Common();
                BL_Common  objBL  = new BL_Common();
                objEWA.OrgId    = ddlorganization.SelectedValue;//Session["OrgId"].ToString();
                objEWA.BranchId = ddlBranch.SelectedValue.ToString();
                objEWA.CourseId = ddlCourse.SelectedValue.ToString();
                objEWA.ClassId  = ddlClass.SelectedValue.ToString();
                objEWA.date     = Convert.ToDateTime(txtDate.Text.ToString()).ToShortDateString();

                DataSet ds = objBL.BindTimeTable_BL(objEWA);
                if (ds.Tables[0].Rows.Count > 0)
                {
                    bindGridView(ds);
                }
                else
                {
                    msgBox.ShowMessage("Record not found", "Information", UserControls.MessageBox.MessageStyle.Critical);
                }
            }
            catch (Exception exp)
            {
                GeneralErr(exp.Message.ToString());
            }
        }