DataTable某一列的最大值 

1.datatable.compute("max(列名)","")

eg:  int max_Idx_Number = 1;
     int.TryParse(Convert.ToString(dtGvModel.Compute("max(" + POR_WORK_ORDER_REC_FIELDS.FIELD_IDX_NUMBER + ")", "")), out max_Idx_Number);

2.Column.Expression     =     "max(数据列名)";   


3.用视图来排序 
       firstView     =     dt.DefaultView   
       firstView.Sort     =     "数据列名     DESC"   
       maxvalue     =     firstView.Item(0).Item(0)   

4.tbl.Select("", "columnName Asc")(0)(columnName)

 

posted @ 2016-05-10 20:44  ChineseMoonGod  阅读(1586)  评论(0)  编辑  收藏  举报