如何從數據表中選擇數據

   string str = a_strMoCode;
    DataRow[] arrDR = dsContent.Tables[0].Select("InsertDateTime = '" +
     DateTime.Now.ToString("yyyy-MM-dd") + "' and MoCode like '" + str + "%'","Mocode asc");
    DataSet objDs = null;
    objDs = new DataSet();
    objDs.Merge(arrDR);
    return objDs.Tables[0].DefaultView;