How to compare object's type with a generics type, irrelevant to generic argument?

Best way to illustrate my question is with this example code:

  class Item {}
  class Container< T > {}
  class Program
  {
    static void DoSomething( object something )
    {
      if( typeof( Item ) == something.GetType() )
      {
        System.Console.WriteLine( "Item" );
      }
      else if( typeof( Container<> ) == something.GetType() )
      {
        System.Console.WriteLine( "Container<>" );
      }
    }

    static void Main( string[] args )
    {
      DoSomething( new Item() );
      DoSomething( new Container< int >() );
    }
  }

The following line will not work:

else if( typeof( Container<> ) == something.GetType() )

Is it a way to make it work without explicitly changing Container<> into Container<int>? I want to know that object is of 'Container' type and I really has no interest is it Container<int> or Container<string>. Any hints other than dozens lines of reflection?