c# DataTable join 两表连接

 

转:https://www.cnblogs.com/xuxiaona/p/4000344.html

JlrInfodt和dtsource是两个datatable,通过[姓名]和[lqry]进行关联
               var query1 = from rJlrInfodt in JlrInfodt.AsEnumerable()
                                     from rdtsource in dtsource.AsEnumerable()
                                     where rJlrInfodt.Field<String>("姓名") == rdtsource.Field<String>("lqry")
                                     select new
                                     {
                                         领取人员 = rdtsource.Field<String>("lqry"),
                                         提交总量 = rdtsource.Field<Int64>("提交总量"),
                                         号 = rJlrInfodt.Field<Double>(""),
                                         单位 = rJlrInfodt.Field<String>("单位"),
                                     };
                        DataTable DtAll = new DataTable();
                        DtAll.Columns.Add("领取人员", typeof(String));
                        DtAll.Columns.Add("提交总量", typeof(Int64));
                        DtAll.Columns.Add("", typeof(Double));
                        DtAll.Columns.Add("单位", typeof(String));
                        DataTable dtNew = DtAll.Copy();
                        foreach (var obj in query1)
                            dtNew.Rows.Add(obj.领取人员, obj.提交总量, obj.号, obj.单位);

 

posted @ 2019-06-13 09:54  紫晶城  阅读(1707)  评论(0编辑  收藏  举报