Biskilog/BISKILOG POS PREMIUM/Customer/AddCustomer.cs

using BiskLog_Point_Of_Sale.Multiple_Login;
using BiskLog_Point_Of_Sale.Properties;
using Point_Of_Sale_Managment;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace BiskLog_Point_Of_Sale
{
    public partial class AddCustomer : Form
    {
        Customers customersList;
        SqlConnection cn;
        SqlCommand cm;
        DatabaseConn conn = new DatabaseConn();
        public AddCustomer(Customers customers, bool update = false, List<string> id = null)
        {
            InitializeComponent();
            cn = new SqlConnection(conn.MyConnection());
            customersList = customers;
            if (update)
            {
                title.Text = "Edit Customer Details";
                btnUpdate.Left = (ClientSize.Width - btnUpdate.Width) / 2;
                btnUpdate.Visible = true;
                btnNew.Visible = false;
                lblCustomerID.Text = id[0];
                lblCustomerID.Visible = true;
                lblID.Visible = true;
                txtFirstname.Text = id[1];
                txtSurname.Text = id[2];
                txtAddress.Text = id[3];
                txtEmail.Text = id[4];
                txtPhone.Text = id[5];
                txtTIN.Text = id[6];
            }
            else
            {
                title.Text = "New Customer";
                btnNew.Left = (ClientSize.Width - btnNew.Width) / 2;
                btnNew.Visible = true;
            }
        }

        private void Exit_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void Exit_MouseEnter(object sender, EventArgs e)
        {
            exit.BackColor = Color.Crimson;
        }

        private void Exit_MouseLeave(object sender, EventArgs e)
        {
            exit.BackColor = Color.FromArgb(20, 158, 132);
        }
        public int checkEmptyBox()
        {
            int total = 0;
            foreach (Control c in panel2.Controls)
            {
                if ((c is TextBox) && (!String.IsNullOrEmpty(c.Text)))
                {
                    total++;
                }
            }
            if (String.IsNullOrEmpty(txtEmail.Text))
            {
                total++;
            }
            return total;
        }
        public int SaveDetails()
        {
            try
            {
                cn.Open();
                lblCustomerID.Invoke(new Action(() =>
                {
                    string number = String.Format("{0:d9}", (DateTime.Now.Ticks / 10) % 1000000000);
                    lblCustomerID.Text = (txtFirstname.Text.Substring(0, 2) + number).ToUpper(); ;
                    cm = new SqlCommand("Insert into tblCustomers (customerID,Firstname,Surname,address,email,telephone,dateAdded,branchID,status,tin,financialStatus,name_key1,name_key2) " +
                        "values (@customerID,@Firstname,@Surname,@address,@email,@telephone,@dateAdded,@branchID,@status,@tin,@financialStatus,@name_key1,@name_key2)", cn);
                    cm.Parameters.AddWithValue("@customerID", lblCustomerID.Text);
                    cm.Parameters.AddWithValue("@Firstname", txtFirstname.Text);
                    cm.Parameters.AddWithValue("@Surname", txtSurname.Text);
                    cm.Parameters.AddWithValue("@address", txtAddress.Text);
                    cm.Parameters.AddWithValue("@telephone", txtPhone.Text);
                    cm.Parameters.AddWithValue("@dateAdded", DateTime.Now);
                    cm.Parameters.AddWithValue("@email", txtEmail.Text);
                    cm.Parameters.AddWithValue("@branchID", Settings.Default.BranchID);
                    cm.Parameters.AddWithValue("@status", "ACTIVE");
                    cm.Parameters.AddWithValue("@tin", txtTIN.Text);
                    cm.Parameters.AddWithValue("@financialStatus", "not owing");
                    cm.Parameters.AddWithValue("@name_key1", txtFirstname.Text + " " + txtSurname.Text);
                    cm.Parameters.AddWithValue("@name_key2", txtSurname.Text + " " + txtFirstname.Text);
                    cm.ExecuteNonQuery();
                }));
                cn.Close();
                return 1;
            }
            catch
            {
                cn.Close();
                return 0;
            }
        }
        public void lockBoxes()
        {
            foreach (Control box in panel2.Controls)
            {
                if (box is TextBox)
                {
                    box.Enabled = false;
                }
            }
        }
        public void unlockBoxes()
        {
            foreach (Control box in panel2.Controls)
            {
                if (box is TextBox)
                {
                    box.Enabled = true;
                }
            }
        }
        public void clearBoxes()
        {
            foreach (Control box in panel2.Controls)
            {
                if (box is TextBox)
                {
                    box.Text = "";
                }
            }
        }
        private async void BtnNew_Click(object sender, EventArgs e)
        {
            int checkedTotal = checkEmptyBox();
            if (checkedTotal == 6)
            {
                Task<int> task = new Task<int>(SaveDetails);
                holding.Visible = true;
                lockBoxes();
                btnNew.Enabled = false;
                task.Start();
                int result = await task;
                if (result == 1)
                {
                    string heading = "Registration Successful";
                    string body = "The new customer has been addded successfully to the system.";
                    NoAction noAction = new NoAction(title: heading, message: body);
                    noAction.BringToFront();
                    noAction.ShowDialog();
                    clearBoxes();
                    customersList.loadCustomerOutNOut();
                }
                else
                {
                    string heading = "Registration Failed";
                    string body = "An error occurred while adding the new customer to the system, please try again later.";
                    NoAction noAction = new NoAction(title: heading, message: body);
                    noAction.BringToFront();
                    noAction.ShowDialog();
                }
                holding.Visible = false;
                btnNew.Enabled = true;
                unlockBoxes();
            }
            else
            {
                string heading = "Operation Denied";
                string body = "You must fill out all spaces to continue!!";
                NoAction noAction = new NoAction(title: heading, message: body);
                noAction.BringToFront();
                noAction.ShowDialog();
            }
        }
        public int UpdateCustomers()
        {
            try
            {
                cn.Open();
                lblCustomerID.Invoke(new Action(() =>
                {
                    cm = new SqlCommand("Update tblCustomers set Firstname = @firstname, Surname = @surname,address = @address, tin = @tin," +
                        "telephone = @phone,email = @email where customerID = @customerNumber", cn);
                    cm.Parameters.AddWithValue("@firstname", txtFirstname.Text);
                    cm.Parameters.AddWithValue("@surname", txtSurname.Text);
                    cm.Parameters.AddWithValue("@address", txtAddress.Text);
                    cm.Parameters.AddWithValue("@tin", txtTIN.Text);
                    cm.Parameters.AddWithValue("@phone", txtPhone.Text);
                    cm.Parameters.AddWithValue("@email", txtEmail.Text);
                    cm.Parameters.AddWithValue("@customerNumber", lblCustomerID.Text);
                    cm.ExecuteNonQuery();
                }));
                cn.Close();
                return 1;
            }
            catch
            {
                cn.Close();
                return 0;
            }
        }

        private async void BtnUpdate_Click(object sender, EventArgs e)
        {
            int checkedTotal = checkEmptyBox();
            if (checkedTotal == 6)
            {
                Task<int> task = new Task<int>(UpdateCustomers);
                holding.Visible = true;
                lockBoxes();
                btnUpdate.Enabled = false;
                task.Start();
                int result = await task;
                if (result == 1)
                {
                    string heading = "Update Successful";
                    string body = "Customer details has been updated successfully....";
                    NoAction noAction = new NoAction(title: heading, message: body);
                    noAction.BringToFront();
                    noAction.ShowDialog();
                    customersList.loadCustomerOutNOut();
                }
                else
                {
                    string heading = "Update Failed";
                    string body = "An error occurred while updating customer details , please try again later.";
                    NoAction noAction = new NoAction(title: heading, message: body);
                    noAction.BringToFront();
                    noAction.ShowDialog();
                }
                holding.Visible = false;
                btnUpdate.Enabled = true;
                unlockBoxes();
            }
            else
            {
                string heading = "Operation Denied";
                string body = "You must fill out all spaces to continue!!";
                NoAction noAction = new NoAction(title: heading, message: body);
                noAction.BringToFront();
                noAction.ShowDialog();
            }
        }
    }
}