具有联接和where子句的Linq查询给出错误

Question

What am i doing wrong with this Linq query?

The sql statement is :

SELECT 
    * 
FROM 
    ReportGroups rg INNER JOIN ReportDefinitions rd on rg.ReportGroupID = rd.ReportGroupID
WHERE 
    rd.ReportGroupID = 5

LINQ:

var query = from rg in ReportGroups  
                join rd in ReportDefinitions on rg.ReportGroupID equals rd.ReportGroupID
                .Where rd.ReportGroupID equals 5
                 select new
                {
                    rg.ReportGroupName, 
                    rd.ReportName
                };

    query.Dump();

Answer 1

It looks like you're mixing query comprehension syntax with method call syntax. Try replacing .Where with where .

Answer 2

There are 2 mistakes in your query.

First of all use where instead of .Where .

Secondly in the where clause don't use equals use == , equals is used for joins only

Like this:

var query = from rg in ReportGroups  
                join rd in ReportDefinitions on rg.ReportGroupID equals rd.ReportGroupID
                where rd.ReportGroupID == 5 //updates here
                 select new
                {
                    rg.ReportGroupName, 
                    rd.ReportName
                };

    query.Dump();