FirstForm.cs

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

namespace MyLibrary
{
    public partial class FirstForm : Form
    {
        public FirstForm()
        {
            InitializeComponent();
        }
        
       

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

        private void button5_Click(object sender, EventArgs e)
        {
            this.Hide();
            MainForm main = new MainForm();
            main.Show();
        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void label2_Click(object sender, EventArgs e)
        {

        }
    }
}