File Stream C#

using System;
using System.IO;
class Class1 {
    static void Main(string[] args) {
        string[] cla = Environment.GetCommandLineArgs();
        if (cla.GetUpperBound(0) == 1) {
            FileInfo fi = new FileInfo(cla[1]);
            fi.Delete();
            Console.WriteLine("File      : " + cla[1]);
            Console.WriteLine("Attributes: " + fi.Attributes.ToString());
            Console.WriteLine("File Deleted...");
        } else
            Console.WriteLine("Usage: rm ");
    }
}