VisualJS.NET custom control development

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing; 
using VisualJS;
using VisualJS.Web.Forms;
using System.Linq;
using System.Text;

namespace SpinnerTest.VisualJSApp
{
    public partial class SpinnerForm : VisualJS.Web.Forms.Form
    {

#region Constructors
        public SpinnerForm()
        {
            InitializeComponent();
            AfterInitialization();
        } 

        //Use the below constructor if you create the instance of this Form object other than the active Thread
        //otherwise you will receive "Cant locate the ClientID in active context. Consider using Form constructor with ClientID parameter" exception
        public SpinnerForm(string clientId): base(clientId)
        {
            InitializeComponent(); 
            AfterInitialization();
        }
#endregion

        //Use below method for the tasks after the initialization of the Form
        void  AfterInitialization()
        {

        }

        private void btnStep_Click(object sender, EventArgs e)
        {
            this.spinner1.Step = 5;
        }

        private void button5_Click(object sender, EventArgs e)
        {

        }

        private void button6_Click(object sender, EventArgs e)
        {
            this.spinner1.Min = 0;
        }

        private void btnOnOff_Click(object sender, EventArgs e)
        {
            this.spinner1.Enabled = !this.spinner1.Enabled;
        }

        private void btnMin_Click(object sender, EventArgs e)
        {
            this.spinner1.Min = 0;
        }

        private void btnClearMin_Click(object sender, EventArgs e)
        {
            this.spinner1.Min = null;
        }

        private void btnPage_Click(object sender, EventArgs e)
        {
            this.spinner1.Page = 3;
        }

        private void btnPageDown_Click(object sender, EventArgs e)
        {
            this.spinner1.PageDown();
        }

        private void btnPageUp_Click(object sender, EventArgs e)
        {
            this.spinner1.PageUp();
        }

        private void spinner1_TextChanged(object sender, EventArgs e)
        {
            lblResult.Text = spinner1.Value.ToString();
        }
    }
}