protected void grdPDView_RowDataBound(object sender, GridViewRowEventArgs e)
        {         
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                Label lblComplete = (Label)e.Row.FindControl("lblComplete");
                Label lblvisitDate = (Label)e.Row.FindControl("lblVisitDate");
                LinkButton lnkbtnsurvey = (LinkButton)e.Row.FindControl("lnkbtnNewSurvey");
                toGetInfo setinfo = new toGetInfo();
                setinfo.setVisitDate(lblvisitDate.Text); 
                if (string.IsNullOrEmpty(lblComplete.Text))
                {
                    lblComplete.Visible = false;
                    lnkbtnsurvey.Visible = true;

                }
                else if (!string.IsNullOrEmpty(lblComplete.Text))
                {
                    if (lblComplete.Text == "Completed")
                    {
                        lnkbtnsurvey.Visible = false;
                        lblComplete.Visible = true;
                    }
                    else
                    {
                        lnkbtnsurvey.Visible = true;
                        lblComplete.Visible = false;
                    }

                }
            }
        }