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linq to sql query for extract email which is not in string array

Posted on 2008-06-21
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Last Modified: 2013-11-26
i have array like

string[] email=new string[]{"aa@aa.com","aa1@aa.com"}

now i need to extract all record which does not contail this emails.

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Question by:jbajaj
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by:naspinski
ID: 21836825
I don't understand the question.  I see that you have an array of emails - are you using this to search through a DB that has an email field and you want the records that are *not* in the array?

For example if your array is { "a@email.com", "b@email.com" }

and you table is:
EMAIL
a@email.com
b@email.com
c@email.com
d@email.com

You want the query to return c@email and d@email.com?
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Accepted Solution

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naspinski earned 2000 total points
ID: 21836848
If that is the case, this query will return all the records that the [email] column does not contain an email that is inside the array:
var query = from p in db.items where !email.Contains(p.EMAIL) select p;
 
//  'EMAIL' is a column in my table which is named 'items'
//  'db' is my DataContext object

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