title: How to solve the error cannot be inferred from the usage. Try specifying the type arguments explicitly?
body: <pre><code>static Func&lt;T, object&gt; CreateSelector&lt;T&gt;(IEnumerable&lt;string&gt; propertyNames)
  {
      var sourceType = typeof(T);
      var parameter = Expression.Parameter(sourceType, "e");
      var properties = propertyNames.Select(name =&gt; Expression.PropertyOrField(parameter, name)).ToArray();
      var selector = Expression.Lambda&lt;Func&lt;T, object&gt;&gt;(
          Expression.Call(typeof(Tuple), "Create", properties.Select(p =&gt; p.Type).ToArray(), properties),
          parameter);
      return selector.Compile();
  }
  public static IEnumerable&lt;Tuple&lt;T, T&gt;&gt; Join&lt;T&gt;(this IEnumerable&lt;T&gt; left, IEnumerable&lt;T&gt; right, IEnumerable&lt;string&gt; propertyNames)
  {
      var keySelector = CreateSelector&lt;T&gt;(propertyNames);
      return left.Join(right, keySelector, keySelector, Tuple.Create);
  }
  public static bool CompareLists&lt;T1, T2&gt;(IEnumerable&lt;T1&gt; lstProduct1, IEnumerable&lt;T2&gt; lstProduct2, List&lt;DuplicateExpression&gt; DuplicateExpression)
  {
      string[] Fields = DuplicateExpression.Select(x =&gt; x.ExpressionName).ToArray();
      var JoinExp = lstProduct1.Join(lstProduct2, Fields);
      bool IsSuccess = true;// CompareTwoLists(lstProduct1, lstProduct2, (listProductx1, listProductx2) =&gt; JoinExp.Any());
  
      return IsSuccess;
  }
  </code></pre>
  
  <p>When I compile the above code; I am getting error on below line </p>
  
  <pre><code>var JoinExp = lstProduct1.Join(lstProduct2, Fields);
  </code></pre>
  
  <p>Error is</p>
  
  <blockquote>
    <p>Error 1   The type arguments for method
    'AP.Classes.ListComparison.Join(System.Collections.Generic.IEnumerable,
    System.Collections.Generic.IEnumerable,
    System.Collections.Generic.IEnumerable)' cannot be inferred
    from the usage. Try specifying the type arguments
    explicitly.   D:\Workshop\Ap\Classes\DuplicateValidator.cs</p>
  </blockquote>
  
  <p>How to solve this error? I am creating a List comparison tool.</p>