using colAlias = System.Collections;

namespace System

{

public class TestClass

{

    public static void Main()

    {

        // Searching the alias:

        colAlias::Hashtable test = new colAlias::Hashtable();

​

        // Add items to the table.

        test.Add("A", "1");

        test.Add("B", "2");

        test.Add("C", "3");

​

        foreach (string name in test.Keys)

        {

            // Searching the global namespace:

            global::System.Console.WriteLine(name + " " + test[name]);

        }

    }

}

}