using System.Collections.Generic;
using System.Linq;

namespace ConsoleApplication11 {
  public class MainClass {
    public static void Main() {
      var myList=new List<string>();
      //error CS1928: 'System.Collections.Generic.List<string>' does not contain a
      //definition for 'AsEnumerable' and the best extension method overload
      //'System.Linq.Enumerable.AsEnumerable<TSource>(System.Collections.Generic.IEnumerable<TSource>)'
      //has some invalid arguments
      var temp=myList.AsEnumerable<object>();
    }
  }
}