using System.IO;
using System.Windows.Forms;

//this script is an example of classless C# script and it has to be executed only through classLess.cs script
// Example: c:\>cscscript classLess SetReadOnly.cs

if (DialogResult.Yes == MessageBox.Show("Do you want to make all files in " + Environment.CurrentDirectory + " Read-Only?", "CS-Script", MessageBoxButtons.YesNo))
{
    foreach (string file in Directory.GetFiles(Environment.CurrentDirectory))
        File.SetAttributes(file, FileAttributes.ReadOnly);
}