1.Run Designer→Columns→需要设置的列→Columns properties→ColumnsEdit→New→选择(repositoryItemComboBox1)

2.给下拉框列赋值:

List<Person> listP = AgencyManage.Instance.AllPerList.FindAll(a=>a.IS_DELETED==1) ;
foreach (var item in listP)
{
repositoryItemComboBox1.Items.Add(item.Name);
}