Rename Computer

using System;
using System.Management;

public class Program
{
    public static void Main()
    {
        string oldName = System.Environment.MachineName;
        using (ManagementObject cs = new ManagementObject(@"Win32_Computersystem.Name='" + oldName + "'"))
        {
            cs.Get();
                ManagementBaseObject inParams = cs.GetMethodParameters("Rename");
                inParams.SetPropertyValue("Name", newName);
                InvokeMethodOptions methodOptions = new InvokeMethodOptions(null, System.TimeSpan.MaxValue);
                ManagementBaseObject outParams = cs.InvokeMethod("Rename", inParams, methodOptions);
                string Return = Convert.ToString(outParams.Properties["ReturnValue"].Value);
            Console.WriteLine("Return Value: {0}", Return);
            Console.ReadKey();
        }
    }
}