ucModifyMedicine.cs

using System;
using System.Collections;
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;
using static System.Windows.Forms.VisualStyles.VisualStyleElement.StartPanel;
using Pharmacy_Management_Sysytem.BusinessLogic;
using Pharmacy_Management_Sysytem.Models;
using Pharmacy_Management_Sysytem.Services;

namespace Pharmacy_Management_Sysytem
{
    public partial class ucModifyMedicine : UserControl
    {
        private readonly IMedicineService _medicineService;

        public ucModifyMedicine()
        {
            InitializeComponent();
            _medicineService = Program.Services.MedicineService;
        }
        struct stMedicineInfo
        {
            public string _MedicineID { get; }
            public string _MedicineName { get; }
            public string _MedicineNumber { get; }
            public string _ManufactureDate { get; }
            public string _ExpirationDate { get; }
            public int _Quantity { get; }
            public int _PricePerUnit { get; }
            
            public stMedicineInfo(string MedicineID ,string MedicineName, string MedicineNumber, string ManufactureDate, string ExpirationDate, int Quantity, int PricePerUnit)
            {
                _MedicineID = MedicineID;
                _MedicineName = MedicineName;
                _MedicineNumber = MedicineNumber;
                _ManufactureDate = ManufactureDate;
                _ExpirationDate = ExpirationDate;
                _Quantity = Quantity;
                _PricePerUnit = PricePerUnit;
            }
        }
        stMedicineInfo MedicineInfo;
        bool IsMedicineFound(string MedicineID)
        {
            var result = _medicineService.GetMedicineByMedicineId(MedicineID);
            return result.IsSuccess;
        }
        void setAll()
        {
            txtBoxMedicineID.Enabled = true;
            btnSearch.Enabled = true;
            txtBoxMedicineID.Clear();
            txtBoxMedicineName.Clear();
            txtBoxMedicineNumber.Clear();
            dtbDateOfManufature.ResetText();
            dtbExpirationDate.ResetText();
            txtBoxQuantity.Clear();
            txtBoxPricePerUnit.Clear();
            txtBoxMedicineName.Enabled = false;
            txtBoxMedicineNumber.Enabled = false;
            dtbDateOfManufature.Enabled = false;
            dtbExpirationDate.Enabled = false;
            txtBoxQuantity.Enabled = false;
            txtBoxPricePerUnit.Enabled = false;
            btnUpdate.Enabled = false;
        }
        void enableBoxes()
        {
            txtBoxMedicineName.Enabled = true;
            txtBoxMedicineNumber.Enabled = true;
            dtbDateOfManufature.Enabled = true;
            dtbExpirationDate.Enabled = true;
            txtBoxQuantity.Enabled = true;
            txtBoxPricePerUnit.Enabled = true;
            btnUpdate.Enabled = true;
        }

        void changeBtnUpdataState()
        {
            if (txtBoxMedicineName.Text != MedicineInfo._MedicineName || txtBoxMedicineNumber.Text != MedicineInfo._MedicineNumber || dtbDateOfManufature.Text != MedicineInfo._ManufactureDate || dtbExpirationDate.Text != MedicineInfo._ExpirationDate || txtBoxQuantity.Text != MedicineInfo._Quantity.ToString() || txtBoxPricePerUnit.Text != MedicineInfo._PricePerUnit.ToString())
            {
                btnUpdate.Enabled = true;
            }
            else
            {
                btnUpdate.Enabled = false;
            }
        }

        void updateMedicine(string MedicineName, string MedicineNumber, string ManufactureDate, string ExpirationDate, int Quantity, int PricePerUnit)
        {
            // TODO: Implement medicine update using service layer
            MessageBox.Show("Medicine update functionality needs to be fully implemented", 
                          "Info", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }
        private void btnSearch_Click(object sender, EventArgs e)
        {
            if(txtBoxMedicineID.Text.Trim() == "")
            {
                MessageBox.Show("Enter correct information.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            if(IsMedicineFound(txtBoxMedicineID.Text))
            {
                var result = _medicineService.GetMedicineByMedicineId(txtBoxMedicineID.Text);
                if (result.IsSuccess)
                {
                    var medicine = result.Data;
                    txtBoxMedicineName.Text = medicine.MedicineName;
                    txtBoxMedicineNumber.Text = medicine.MedicineNumber;
                    dtbDateOfManufature.Text = medicine.ManufactureDate.ToString();
                    dtbExpirationDate.Text = medicine.ExpirationDate.ToString();
                    txtBoxQuantity.Text = medicine.Quantity.ToString();
                    txtBoxPricePerUnit.Text = medicine.PricePerUnit.ToString();
                    MedicineInfo = new stMedicineInfo(txtBoxMedicineID.Text, txtBoxMedicineName.Text, txtBoxMedicineNumber.Text, dtbDateOfManufature.Text, dtbExpirationDate.Text, Convert.ToInt32(txtBoxQuantity.Text), Convert.ToInt32(txtBoxPricePerUnit.Text));
                    txtBoxMedicineID.Enabled = false;
                    btnSearch.Enabled = false;
                    enableBoxes();
                    changeBtnUpdataState();
                }
            }
            else
            {
                MessageBox.Show("Enter correct information.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void btnReset_Click(object sender, EventArgs e)
        {
            setAll();
        }

        private void txtBoxMedicineName_TextChanged(object sender, EventArgs e)
        {
            changeBtnUpdataState();
        }

        private void txtBoxMedicineNumber_TextChanged(object sender, EventArgs e)
        {
            changeBtnUpdataState();
        }

        private void dtbDateOfManufature_ValueChanged(object sender, EventArgs e)
        {
            changeBtnUpdataState();
        }

        private void dtbExpirationDate_ValueChanged(object sender, EventArgs e)
        {
            changeBtnUpdataState();
        }

        private void txtBoxQuantity_TextChanged(object sender, EventArgs e)
        {
            changeBtnUpdataState();
        }

        private void txtBoxPricePerUnit_TextChanged(object sender, EventArgs e)
        {
            changeBtnUpdataState();
        }

        private void btnUpdate_Click(object sender, EventArgs e)
        {
            updateMedicine(txtBoxMedicineName.Text, txtBoxMedicineNumber.Text, dtbDateOfManufature.Text, dtbExpirationDate.Text, Convert.ToInt32(txtBoxQuantity.Text), Convert.ToInt32(txtBoxPricePerUnit.Text));
            setAll();
        }
    }
}