RemoteMessages.LoginForm.OKbutton_Click C# (CSharp) Method

        private void OKbutton_Click(object sender, EventArgs e)
        {
            if (checkRemember.Checked)
            {
                using (StreamWriter writer = new StreamWriter(MainForm.appFolder + "pwd"))
                {
                    writer.WriteLine(username.Text);
                    writer.WriteLine(password.Text);
                }
            }
            else
                File.Delete(MainForm.appFolder + "pwd");

            this.DialogResult = System.Windows.Forms.DialogResult.OK;
        }