private void pesquisaOsPreventiva() { ListCampos ls = new ListCampos(); ListCampo lc = new ListCampo(); Calendar1.SelectedDate = (DateTime)ViewState["Data"]; tblOS tbos = new tblOS(); dtPesquisa = tbos.OS_Preventivas_Mes(Global.GetConnection(), cmbObra.SelectedValue, Calendar1.SelectedDate); }