CODEWITHSUNDEEP
asp.net-mvclinqlambda
Slava
Slava

Reputation: 6640

How to create this lambda expression?

To keep things simple, I have this class:

public class Contact
{
    public string Name { get; set; }
    public string[] Emails { get; set; }
}

I have a collection of contacts = IEnumerable<Contact>

I need to find all contacts in that collection that have, let's say a text "xxx" in their email addresses (they may have multiple emails).

Something like that doesn't work of course:

var found = contacts.Where(c => c.Emails.Where(e => e.Contains("xxx")));

I am wondering how to build such query using lambda expression?

Thanks.

Upvotes: 2

Views: 391

Answers (2)

Daniel Hilgarth
Daniel Hilgarth

Reputation: 174289

Use Any instead of Where in the inner expression:

var found = contacts.Where(c => c.Emails.Any(e => e.Contains("xxx")));

Upvotes: 4

Kundan Singh Chouhan
Kundan Singh Chouhan

Reputation: 14282

Try this 

var found = contacts.Where(c => c.Emails.Where(e => e.Contains("xxx")).Count() > 0);

This will return all the contacts according to the specified email condition.

Good Luck !!

Upvotes: 0

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