Program.cs

using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Diagnostics;
using System.Globalization;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;
using PatientBillingSystem.Forms;

namespace PatientBillingSystem
{
    public enum AccountMode
    {
        Administrator, Registrar, Nurse, Doctor, Cashier, Patient
    }

    internal static class Program
    {
        public static string LoggedUsername;
        public static AccountMode AccountMode { get; set; } = AccountMode.Administrator;



        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            if (Environment.OSVersion.Version.Major >= 6)
                SetProcessDPIAware();

            Database.SqlConnection.Open();
            Database.SqlConnection.Close();

            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new LoginForm());
        }

        [System.Runtime.InteropServices.DllImport("user32.dll")]
        private static extern bool SetProcessDPIAware();

        // PUBLIC STATIC METHODS
        public static int CalculateAge(DateTime birthDate)
        {
            DateTime currentDate = DateTime.Now;
            int age = currentDate.Year - birthDate.Year;

            if (currentDate.Month < birthDate.Month) age--;
            else if (currentDate.Month == birthDate.Month && currentDate.Day < birthDate.Day) age--;
            else if (birthDate.Month == 2 && birthDate.Day == 29 && !DateTime.IsLeapYear(currentDate.Year)) age--;

            return age;
        }

        public static string GetPesoAmount(string amount)
        {
            return string.Format(CultureInfo.CreateSpecificCulture("en-PH"), "{0:C}", double.Parse("0" + amount));
        }

        public static bool ShowDiscardInputDialog()
        {
            DialogResult dialogResult = MessageBox.Show("Are you sure? Your input will be discarded",
                "Discard Input", MessageBoxButtons.YesNo);

            return dialogResult == DialogResult.Yes;

            // Project developed by Dave Laurence Tolentino | BSIT-2B
            // FINAL TASK PERFORMANCE FOR
            // INFORMATION MANAGEMENT & INTEGRATIVE PROGRAMMING
            // Final revision submitted at 06/15/2024
        }


    }
}