这段代码对我很重要,我们就快交项目了.! 我想完成这个功能,!  请帮我解释一下, 别且写上注释,！   先谢谢各位了.1!

以下是一个右下角窗体 ,缓慢移动上升或下降的代码:

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

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        int x = 0;　　
        int y = 0;
        public Form1()
        {
            InitializeComponent();
            Form.CheckForIllegalCrossThreadCalls = false;
             x = Screen.PrimaryScreen.Bounds.Width - this.Width;
             y = Screen.PrimaryScreen.Bounds.Height;            
        }


        //窗体加载事件;
        private void Form1_Load(object sender, EventArgs e)
        {
            this.Location = new Point(x, y);
            timer1.Start();　　　//启用计时器;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            y = y - 10;
            this.Location = new Point(x, y);
            if (y <= Screen.PrimaryScreen.Bounds.Height - this.Height - 30)
            {
                timer1.Stop();
                System.Threading.Thread.Sleep(5000);
                this.Close();
            }
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            while (true)
            {
                y = y + 10;
                this.Location = new Point(x, y);
                if (y >= Screen.PrimaryScreen.Bounds.Height)
                    break;
                System.Threading.Thread.Sleep(100);
            }
        }

    }
}

o(∩_∩)o...。

谢谢大家，热心的回答.!    特别感谢米老鼠 . 注释,  写的很详细..!  同时,也感谢所有的回答着.!