How can I use where instead of contains?

Question

0.00/5 (No votes)

See more:

In terms of performance, I want to do using contains instead of where. How can I create the query below without using contains?

var t=myentities.Employee.WHERE(x=>x.EmployeeID ==123 && myList.Any(y=>x.BranchID.Contains)).ToList();

What I have tried:

var myList=new List<string>();

foreach(var item in Listed)
{ 
    myList.Add(item);
}

var t=myentities.Employee.WHERE(x=>x.EmployeeID ==123 && myList.Any(y=>x.BranchID.Contains)).ToList();

Posted 16-May-20 6:31am

Member 14169626

Updated 16-May-20 7:33am

Add a Solution

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)

phil.o · Answer 1 · 2020-05-16T07:34:00

These are not the same thing. Where expects a predicate as argument which is used to filter the items in a collection, and returns a filtered enumeration. Contains expects an item as argument and returns true or false depending on whether the argument is present in the collection.
Moreover, the code block you provided would not even compile since you do not pass any argument to the Contains method (which, actually, you are using as if it were a property). And, if BranchID variable is not a list, it does not have any Contains method either.

Perhaps if you could describe what you are really expecting from your code block, along with the type of variables that you are using, we would be able to propose a concrete solution.