Query from using a List

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.NET3.0

.NET3.5

I have a container that I want to query all elements that have a parameter that matches any of the items in a List. Do I have to loop through my list and requery every loop or can this be done in one line?

e.g.

<br />List[int] matchingParams = GetMatchingParams();<br />MyDataTable data = GetMyDataTable(); //Has an integer column we want to match to, lets call it intMatch<br /><br />var results = from rows in data<br />              where rows.intMatch == (ANY OF THE ITEMS IN matchingParams)<br />              select rows;<br />

Posted 21-May-09 9:32am

N_tro_P

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Ian McCaul · Answer 1 · 2009-05-21T09:53:00

You may just be able to do a .Contains() i.e.:

<br />List[int] matchingParams = GetMatchingParams();<br />MyDataTable data = GetMyDataTable(); //Has an integer column we want to match to, lets call it intMatch<br />var results = from rows in data              <br />              where matchingParams.Contains(rows.intMatch)              <br />              select rows;<br />