private void cmbFilter_SelectedIndexChanged(object sender, EventArgs e) { var re = new ManageTestRepo(); string type = cmbFilter.SelectedItem.ToString(); if (type == "Male" || type == "Female") { re.FilterBySex(type, mgvTest); } if (type == "Child") { re.ChildFilter(mgvTest); } if (type == "Youth") { re.YouthFilter(mgvTest); } if (type == "Adult") { re.AdultFilter(mgvTest); } if (type == "Senior") { re.SeniorFilter(mgvTest); } }