渐变效果

using System;

using System.Drawing;

using System.Windows.Forms;

 

namespace Test_03_渐变效果_

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

 

        private void Form1_Load(object sender, EventArgs e)

        {

            this.Opacity = 0; //设置透明度为0

            this.BackgroundImage = Image.FromFile(Application.StartupPath + @"/2.jpg"); //加载图片

            this.BackgroundImageLayout = ImageLayout.Stretch; //拉伸

            //this.FormBorderStyle = FormBorderStyle.None; //去边框

            this.WindowState = FormWindowState.Maximized; //最大化

            this.timer1.Enabled = true; //启用时间控件

        }

 

        private void timer1_Tick(object sender, EventArgs e)

        {

            this.Opacity += 0.02; //透明度变化

            if (this.Opacity == 1)

            {

                this.timer1.Enabled = false;   //关闭时间控件

            }

        }

    }

}