C# 查询主体必须以 select 子句或 group 子句结尾,为什么会出现错误?

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时间:2020-08-10 08:44:56  来源:igfitidea点击:

A query body must end with a select clause or a group clause why is here an error?

c#.netlinq

提问by

What is wrong with my linq statement, what am I doing wrong?

我的 linq 语句有什么问题,我做错了什么?

if (this.selectLBU.HtUsers.Any())
{
    reportRowItems = (from r in reportRowItems
                      from bu in r.User.HtBusinessUnits
                      where bu.LocationBusinessUnitId == selectLBU.LocationBusinessUnitId).ToList();

采纳答案by Adil

You need to add select clause to tell what data you require from query. This msdn articledescribes the basic query operation and structure.

您需要添加 select 子句来告诉您从查询中需要哪些数据。这篇msdn 文章描述了基本的查询操作和结构。

 reportRowItems = (from r in reportRowItems
                   from bu in r.User.HtBusinessUnits
                   where bu.LocationBusinessUnitId == selectLBU.LocationBusinessUnitId 
                   select r 
                  ).ToList();

To get combination of both tables you can use projection.

要获得两个表的组合,您可以使用投影。

reportRowItems = (from r in reportRowItems
                   from bu in r.User.HtBusinessUnits
                   where bu.LocationBusinessUnitId == selectLBU.LocationBusinessUnitId 
                   select new {r.AttributeName1, r.AttributeName2, bu.AttributeName1}
                  ).ToList();