C#

using System;
using System.Security.Permissions ;
using Microsoft.Win32;

public class RegistryEditor
{
    public static void Main()
    {
        try
        {
            RegistryKey hkcu = Registry.CurrentUser;
            RegistryKey hkSoftware = hkcu.OpenSubKey("Software");
            RegistryKey hkMicrosoft = hkSoftware.OpenSubKey("Microsoft");
            RegistryKey hkIshaan = hkSoftware.CreateSubKey("Test1");
            hkIshaan.SetValue("Name", "Ishaan");
            hkIshaan.SetValue("Age", "20");
            hkIshaan.Close();
            hkSoftware.Close();
            hkcu.Close();
        }
        catch (Exception ex)
        {
            Console.Write(ex.ToString());
        }
    }
}