tbf/WorkflowConfigurator/Forms/SettingsDlg.cs

using System;
using System.Windows.Forms;
using WorkflowConfigurator;

namespace WorkflowConfigurator.Forms
{
	public partial class SettingsDlg : Form
	{
		public SettingsDlg()
		{
			InitializeComponent();
		}

		private void SettingsDlg_Load(object sender, EventArgs e)
		{
            connectionStringTextBox.Text = Program.LocalSettings.ConnectionString;
            usersDBConnStringTextBox.Text = Program.LocalSettings.UsersDBConnString;
            languageTextBox.Text = Program.LocalSettings.Language;
		}

        bool IsSettingsValid(out string message)
        {
            if (languageTextBox.Text.ToLower() != "cn" &&
                languageTextBox.Text.ToLower() != "de" &&
                languageTextBox.Text.ToLower() != "en" &&
                languageTextBox.Text.ToLower() != "sk" &&
                languageTextBox.Text.ToLower() != "cn_zh")
            {
                message = "Invalid language, 'CN', 'DE', 'EN' or 'SK' expected";
                return false;
            }

            message = string.Empty;
            return true;
        }

		private void okButton_Click(object sender, EventArgs e)
		{
            string message;
            if (IsSettingsValid(out message))
            {
                Program.LocalSettings.ConnectionString = connectionStringTextBox.Text;
                Program.LocalSettings.UsersDBConnString = usersDBConnStringTextBox.Text;
                Program.LocalSettings.Language = languageTextBox.Text;
                Program.LocalSettings.Save();

                DialogResult = DialogResult.OK;
                Close();
            }
            else
            {
                MessageBox.Show(message);
            }
		}

		private void cancelButton_Click(object sender, EventArgs e)
		{
			DialogResult = DialogResult.Cancel;
			Close();
		}
	}
}