摘要: var query1 = from s in ds.AsEnumerable() join t in dt.AsEnumerable() on s.Field<string>("Mid") equals t.Field<string>("C_METER_NUMBER") into temp from 阅读全文
posted @ 2021-01-23 10:13 求路问道 阅读(266) 评论(0) 推荐(0)