FormCredentials.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace IfcDoc
{
    public partial class FormCredentials : Form
    {
        public FormCredentials()
        {
            InitializeComponent();

            this.checkBoxRemember.Checked = !String.IsNullOrEmpty(Properties.Settings.Default.Username);
            this.textBoxUsername.Text = Properties.Settings.Default.Username;
            this.textBoxPassword.Text = Properties.Settings.Default.Password;
        }

        public string Username
        {
            get
            {
                return this.textBoxUsername.Text;
            }
        }

        // no sense in using SecureString as it will be sent in the clear anyways
        public string Password
        {
            get
            {
                return this.textBoxPassword.Text;
            }
        }

        protected override void OnClosed(EventArgs e)
        {
            base.OnClosed(e);

            if (this.checkBoxRemember.Checked)
            {
                Properties.Settings.Default.Username = this.textBoxUsername.Text;
                Properties.Settings.Default.Password = this.textBoxPassword.Text;
            }
            else
            {
                Properties.Settings.Default.Username = String.Empty;
                Properties.Settings.Default.Password = String.Empty;
            }
            Properties.Settings.Default.Save();
        }
    }
}