title: Where clause on list property
body: <p>I have two classes :</p>
  
  <pre><code>public class Customer
  {
      public string FirstName { get; set; }
  
      public string LastName { get; set; }
  
      public List&lt;Product&gt; Product { get; set; }
  }
  
  public class Product
  {
      public string ProductNumber { get; set; }
  
      public string ProductColor { get; set; }
  }
  </code></pre>
  
  <p>I want to create a clause where on property <code>Product</code> (<code>Product.ProductColor == ""</code>) I do : </p>
  
  <pre><code>c.Where(x =&gt; x.Product.????? == "11").Select(x =&gt; x).ToList();
  </code></pre>
  
  <p>How do this ?</p>