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;
using System.IO;

namespace ReadFile
{
    public partial class Form1 : Form
    {
        string filename = "";
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (openFileDialog.ShowDialog() == DialogResult.Cancel)
            {
                MessageBox.Show("FIIIIIIIIIIIIIIICK");
            }
            else if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                filename = openFileDialog.FileName;

                StreamReader read = new StreamReader(filename);
                textBox1.Text = read.ReadToEnd();
            }
        }
    }
}