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 WindowsFormsApplication1

 {

     public partial class Form1 : Form

     {

         public Form1()

         {

             InitializeComponent();

         }

         private void button1_Click(object sender, EventArgs e)

         {

             StreamWriter myStream;

             saveFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";

             saveFileDialog1.RestoreDirectory = true;

             if (saveFileDialog1.ShowDialog() == DialogResult.OK)

             {

                 string str;

                 str = saveFileDialog1.FileName;

                 myStream = new StreamWriter(saveFileDialog1.FileName);

                 myStream.Write(textBox1.Text);

                 myStream.Flush();

                 myStream.Close();

             }

         }

         private void button2_Click(object sender, EventArgs e)

         {

             string resultFile;

             OpenFileDialog openFileDialog1 = new OpenFileDialog();

             openFileDialog1.InitialDirectory = "D:\\";

             openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";

             openFileDialog1.RestoreDirectory = true;

             if (openFileDialog1.ShowDialog() == DialogResult.OK)

             {

                 resultFile = openFileDialog1.FileName;

                 MessageBox.Show(resultFile);

             }

         }

         private void Form1_Load(object sender, EventArgs e)

         {

         }

     }

 }