title: Check value in a List<Class> contains in any List<String> usingLambda
body: <p>I have a <code>List&lt;Expenditure&gt;</code>, in that one column is pptCd(String value). I have one more <code>List&lt;String&gt;</code> which has list of pptCds. I want to get all records in <code>List&lt;Expenditure&gt;</code> which has pptCd in the <code>List&lt;String&gt;</code> using lambda expression. any idea?</p>
  
  <pre><code>private IsValid(List&lt;Expenditure&gt; ExpnTrxs)
      {
          var pptCds = Enum.GetNames(typeof(ReferenceEnums.pptCds));
  
          var validpptCdsTrxs = AAExpnTrxs.FindAll(x =&gt; x.pptCd.);
          var inValidPpptCdsTrxs = AAExpnTrxs.FindAll(x =&gt; x.pptCd);
  
          ....................
          ....................
          ....................
      }
  </code></pre>