private void button2_Click_1(object sender, EventArgs e)
        {


            FolderBrowserDialog fbd = new FolderBrowserDialog();
            DialogResult result = fbd.ShowDialog();

            if (result == System.Windows.Forms.DialogResult.Cancel)
            {

                textBox3.Text = Environment.CurrentDirectory;
                return;
            }   else{
                    String[] files = Directory.GetFiles(fbd.SelectedPath);
                    textBox3.Text = files[0];
                    }


        }