//獲取 dataset,後面的方法為自己所寫，請根據實情自己填寫
DataSet dsrows = WMFEntityManager.Instance.GetEntityInfoByPKLite2("admin", "im_group", "is_del", "1", "owner", "" + order_id + "", "");
//建立List
List<string > grie=new List<string>();
if (dsrows != null)
{
   for (int i = 0; i < dsrows.Tables[0].Rows.Count; i++)
      {
      //將表中欄位為“group_id”的列資料儲存到List中
 

         grie.Add(dsrows.Tables[0].Rows[i]["group_id"].ToString());
      }
}