private void Button1_Click(object sender, EventArgs e)
        {
            this.Hide();
            LogInForm mark = new LogInForm();

            mark.Show();
        }
 private void Button3_Click(object sender, EventArgs e)
 {
     {
         DialogResult dialog = MessageBox.Show("Do you want to Log Out?",
                                               "LOG OUT", MessageBoxButtons.YesNo);
         if (dialog == DialogResult.Yes)
         {
             this.Hide();
             LogInForm ss = new LogInForm();
             ss.Show();
         }
         else if (dialog == DialogResult.No)
         {
         }
     }
 }
        private void Button1_Click(object sender, EventArgs e)
        {
            try
            {
                SqlConnection cons = new SqlConnection(Properties.Settings.Default.conString);
                cons.Open();
                SqlCommand command = new SqlCommand("INSERT INTO t_register (UserName, Password, reg_fname, reg_LName ) " +
                                                    "VALUES ('" + UseName.Text.ToString() + "', '" + Pass.Text.ToString() + "','" + reg_fname.Text.ToString() + "'," +
                                                    "'" + reg_last.Text.ToString() + "')", cons);
                command.ExecuteNonQuery();
                MessageBox.Show("Success !!");
                reset();

                reg_fname.Focus();
                this.Hide();
                LogInForm mark = new LogInForm();
                mark.Show();
            }
            catch (Exception)
            {
                MessageBox.Show("Invalid UserName");
                reset();
            }
        }