How do I change following query into EF

Question

0.00/5 (No votes)

See more:

I have a query that is in fact generated using oxygen code generator ,i want to change it into EF Menthod query,this query return me all employee final record list

SQL

var EmpList = _service.GetAllEmployeeDuty().OrderByDescending(x => x.EndDate).GroupBy(x => x.Employee_Id).Select(x => x.First()).ToList();

I tried it my way,but its give exception that EF DOES not support Select(x => x.First())?

Posted 16-Nov-15 18:16pm

Sajid227

Add a Solution

Comments

[no name] 17-Nov-15 0:24am

What x.First() is returning in your code ?

Krunal Rohit 17-Nov-15 0:25am

Strange.

-KR

Maciej Los 17-Nov-15 3:52am

What output you do expect?
Example data might help to understand your issue...

Sajid227 17-Nov-15 5:33am

there are a number of record against one employee in this table ,i want to get last record of each employee in the list

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Maciej Los · Answer 1 · 2015-11-16T23:38:00

Solution 1

EF supports First method. Have a look here: Supported and Unsupported LINQ Methods (LINQ to Entities)[^], but there is a set of Known Issues and Considerations in LINQ to Entities[^]

Please, follow the links.

Posted 16-Nov-15 23:38pm

Maciej Los