c#窗体渐变代码.NET

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

namespace IExplorer
{
    public partial class Form2 : Form
    {
        public int i = 100;
        public Form2()
        {
            InitializeComponent();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            i--;
            this.Opacity = (i * 0.1) / 10;
            if (i <= 0)
            {
                this.timer1.Enabled = false;
                this.Close();
            }
        }

        private void Form2_Load(object sender, EventArgs e)