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

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form2 f2 = new Form2();
            f2.Show();
        }
    }
    public class Form2 : Form
    {
        public Form2()
        {
            this.Opacity = 0.0;
            this.Shown += new EventHandler(Form2_Shown);
        }
        Timer t = new Timer();
        void Form2_Shown(object sender, EventArgs e)
        {
            t.Tick += new EventHandler(t_Tick);
            t.Interval = 100;
            t.Enabled = true;
        }

        void t_Tick(object sender, EventArgs e)
        {
            t.Enabled = false;
            this.Opacity = 1.0;
        }
    }
}