LINQ 的 join 的表达式有先后顺序的要求-技术开发专区

LINQ 的 join 的表达式有先后顺序的要求

作者：ITPUB论坛编辑： nancy 2008-04-13 10:55

【IT168技术文档】

IEnumerable<DingErItemObj> deios = from sdrfb in this.SDRFBS
join nodeid in nodeids on  sdrfb.DFID  equals nodeid
join deitem in this.DingErObj.Items on sdrfb.DBID equals deitem.ItemID
select deitem;

下面语句编译都通不过


IEnumerable<DingErItemObj> deios = from sdrfb in this.SDRFBS
join nodeid in nodeids on  nodeid equals sdrfb.DFID
join deitem in this.DingErObj.Items on sdrfb.DBID equals deitem.ItemID
select deitem;

也就是距离from越近，表达式也就尽量放在前

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