using System;
using System.IO;

class Test 
{
    public static void Main() 
    {
        string path = @"c:\temp\MyTest.txt";

        using (StreamWriter sw = File.CreateText(path)) {}
        string path2 = path + "temp";

        // Ensure that the target does not exist.
        File.Delete(path2);

        // Copy the file.
        File.Copy(path, path2);
        
        // Delete the newly created file.
        File.Delete(path2);
    }
}