My Personal and Also Another Approach to Handling the Singleton Design Pattern

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Globalization;

namespace UZi.Singleton.TestApp
{
    public partial class Form1 : Form
    {
        private SingletonTestClass _singletonInstanceOfSingletonTestClass = null;
        private SingletonClassConstructorArgsChecker _checker = null;

        public Form1()
        {
            InitializeComponent();
            Text = string.Format("{0}", Application.ProductName);
            _checker = (SingletonClassConstructorArgsChecker)CheckSingletonTestClassConstructorArgs;

            try
            {
                _singletonInstanceOfSingletonTestClass = Singleton<SingletonTestClass, SingletonBuilder<SingletonTestClass>>.GetInstance(
                    _checker, new object[] { "Uwe", "Zimmermann" });
            }
            catch (Exception ex)
            {
                MessageBoxOptions options =
                    CultureInfo.CurrentUICulture.TextInfo.IsRightToLeft ?
                    MessageBoxOptions.RtlReading : 0;
                MessageBox.Show(this, ex.Message, System.Windows.Forms.Application.ProductName,
                    MessageBoxButtons.OK, MessageBoxIcon.Error,
                    MessageBoxDefaultButton.Button1, options);
            }

            button1.Enabled = button2.Enabled = _singletonInstanceOfSingletonTestClass != null;
        }

        // simple check of data of our SingletonTestClass-instance...
        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show(string.Format("{0} {1}", _singletonInstanceOfSingletonTestClass.FirstName,
                _singletonInstanceOfSingletonTestClass.LastName), "information", MessageBoxButtons.OK,
                MessageBoxIcon.Information);
        }

        /// <summary>
        /// Checks the arguments of our SingletonTestClass. Here are the arguments for the constructor 2 strings.
        /// </summary>
        /// <param name="args">object-Array with 2 elements of type string.</param>
        /// <returns>bool.</returns>
        /// <exception cref="ArgumentNullException">If args is NULL.</exception>
        /// <exception cref="ArgumentException">If args don't have two elements or type of the elements isn't string.</exception>
        private bool CheckSingletonTestClassConstructorArgs(object[] args)
        {
            if (args == null) throw new ArgumentNullException("args");
            if (args.Length != 2) throw new ArgumentException(
                "Parameter 'args' must contain 2 elements!");
            for (int i = 0; i < 2; i++)
            {
                if (args[i].GetType() != typeof(string)) throw new ArgumentException(
                    string.Format("Type of element {0} of parameter 'args' must be {1}!", i, typeof(string).FullName));
            }
            return true;
        }

        // another check of data of our SingletonTestClass-instance...
        private void button2_Click(object sender, EventArgs e)
        {
            MessageBox.Show(string.Format("{0}, {1}", _singletonInstanceOfSingletonTestClass.LastName,
                _singletonInstanceOfSingletonTestClass.FirstName), "information", MessageBoxButtons.OK,
               MessageBoxIcon.Information);
        }
    }
}