C#微型网页查看工具

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace web_borwer
{
    public partial class Form1 : Form
    {
        int i=0;
        public Form1()
        {
            InitializeComponent();
            textBox1.Text = "http://192.168.126.131:5000/";
            timer1.Enabled = true;
            timer1.Interval = 4000;
            label1.Text = i.ToString();
            timer1.Start();
            button1.Text = "start";
            button2.Text = "stop";
            textBox2.Text = "2000";

            
                }

        private void button1_Click(object sender, EventArgs e)
        {
            
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            webBrowser1.Navigate(textBox1.Text.ToString ());
            i = i + 1;
            label1.Text = i.ToString();
            //i = i + 1;
            //textBox1.Text = i.ToString();
        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click_1(object sender, EventArgs e)
        {
            timer1.Interval = Convert.ToInt32(textBox2.Text);
            timer1.Start();
        }

        private void button2_Click(object sender, EventArgs e)
        {
           
            timer1.Stop();
        }

       
    }
}