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POLinq Remove results with ALL statement
 

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  1. POLinq Remove results with ALL statement
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    <p>Hi I'm trying to use Linq to remove "all" entities from a list.</p> <p>Problem: I'm searching for users that have certain certificates in my database. Thing is that it returns them row by row.... But what I need to check is: If the user holds all the required certificates. This should be checked against my int array. </p> <p>This is my array: [3,5,16], now I want to delete all user who does not have all three of those from the list. Name of the array in code is <strong>mandatory</strong>!</p> <p>The listitems I get back looks like this</p> <p>listitem.CertificateValue <br> listitem.Uid<br> listitem.NameOfPerson</p> <p>So basicly for this example Peter has <strong>three rows</strong> in the list, in this case all the rows needed to stay in the list. But Philip only has 2 rows and hence both of these should be deleted since he does not fullfill the total search criteria.</p> <p>Also copyOfMandatoryis just to not mess with the original collection and cause an expection(collection size changed).</p> <pre><code>foreach (var item in copyOfMandatory) { if (!mandatoryusers.All(i =&gt; mandatory.Contains(i.CertificateValue) || i.Uid == item.Uid)) { mandatoryusers.RemoveAll(i =&gt; i.Uid == item.Uid); } } </code></pre> <p><strong>UPDATE</strong> RemoveAll works like a charm it the if statement that does not work as expected.</p> <p>Doing this it does not take away any part of the list, I began wiht &amp;&amp; instead of || but whne doing that it kills everything but the last person it encounters as long as he/she fullfills the search criteria.</p> <p>Anyone have a hint on how to do this? </p>
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    1. US8bitcat
    1. US8bitcat
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    1. COIs `mandatory` your array of required certificates, i.e. `[3, 5, 16]`?
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      1. USDave Zych
    2. COyes sorry for being unclear!
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      1. US8bitcat
 

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