protected void btnView_Click(object sender, EventArgs e) { // ddlGroup.SelectedValue.ToString(), ddlQuarter.SelectedValue.ToString(), NullOrEmpty(txtYear.Text.ToString()) grEmpKpi.DataSource = null; grEmpKpi.DataBind(); dtScoring = objKpi.SelectKPIList(ddlGroup.SelectedValue.ToString(), ddlQuarter.SelectedValue.ToString(), NullOrEmpty(txtYear.Text.ToString()), "0"); grEmpKpi.DataSource = dtScoring; grEmpKpi.DataBind(); }