How to delete multiple records at one time using LINQ

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I know I can use the SQL delete recorde at one time

Delete * from my table where ID in (5,9,58,7)

If I use LINQ, I have to write

var result = from r in db.Role where (r.ID =5) or (r.ID =9) or (r.ID =58) or (r.ID =7) select r;<br />db.Role.DeleteAllOnSubmit(result);<br />db.SubmitChanges();<br />

Is there a simple way (another way) to do that in LINQ?

Posted 12-Jul-09 23:52pm

pranavcool

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Pete O'Hanlon · Answer 1 · 2009-07-13T00:07:00

What you would do is create a list of IDs that you want to delete and then use the Contains statement. Here's an example:

List<int> list = new List&lt;int&gt;();<br />list.Add(5);<br />list.Add(9);<br />list.Add(58);<br />list.Add(7);<br /><br />var result = from r in db.Role where list.Contains(r.ID) select r;

I've just knocked this up in the Code Project textbox, so I apologise if the formatting isn't 100%.