title: IQueryable<T> filtering by a list of IDs
body: <p>Let's say we have an <code>IQueryable&lt;T&gt;</code>. the <code>Where</code> clause can filter by single ID values, but how can I return an <code>IQueryable</code> based on a list of IDs?</p>
  
  <pre><code>[TestMethod]
  public void TestIQueryableWithList()
  {
      int ID1 = 1;
      List&lt;int&gt; IDs = new List&lt;int&gt; { 1, 3, 4, 8 };
  
      using (var db = new SellooEntities())            
      {
          // works fine as single value
          var iq = db.tblSearches.Where(x =&gt; x.seaUserId == ID1);
  
          // how can i do it to check for all the IDs ??
          foreach(int ID in IDs)
          {
              // this obviously wont work
              var iq = db.tblSearches.Where(x =&gt; x.seaUserId == ID);
          }
      }             
  }
  </code></pre>