Biskilog/BISKILOG POS BASIC/Cashier Module/POS Module/CashierCustomerBill.cs

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;
using BiskLog_Point_Of_Sale.Cashier_Module;
using BiskLog_Point_Of_Sale.Classes;
using BiskLog_Point_Of_Sale.Multiple_Login;
using BiskLog_Point_Of_Sale.Properties;

namespace Point_Of_Sale_Managment.CashierModule
{
    public partial class CashierCustomerBill : Form
    {
        SqlConnection cn;
        SqlCommand command;
        DatabaseConn conn = new DatabaseConn();
        SqlDataReader dr;
        string currency;
        public string id, name, address, telephone, email;
        public CustomerClass customer = new CustomerClass();
        NewSalesPOS formSale;

        public CashierCustomerBill(NewSalesPOS formsales = null)
        {
            InitializeComponent();
            cn = new SqlConnection(conn.MyConnection());
            formSale = formsales;
            currency = Settings.Default.currrencyCode + " ";
        }

        private void DataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {

            if (e.RowIndex != -1)
            {
                string colName = dataGridView1.Columns[e.ColumnIndex].Name;
                id = dataGridView1.Rows[e.RowIndex].Cells[0].Value.ToString();
                name = dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString();
                address = dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString();
                telephone = dataGridView1.Rows[e.RowIndex].Cells[2].Value.ToString();
                email = dataGridView1.Rows[e.RowIndex].Cells[4].Value.ToString();
                customer.id = id;
                customer.firstname = name;
                this.DialogResult = DialogResult.OK;
                this.Close();
            }
        }
        public void products(string key)
        {
            dataGridView1.Rows.Clear();
            cn.Open();
            command = new SqlCommand("Select C.customerID,C.Firstname,C.Surname,C.address,C.telephone,C.email,C.financialStatus from tblCustomers C " +
                "where C.branchID = @branch and C.status = 'ACTIVE' and C.name_key1 like '%" + key + "%' or " +
                "C.branchID = @branch and C.status = 'ACTIVE' and C.name_key2 like '%" + key + "%' or " +
                "C.branchID = @branch and C.status = 'ACTIVE' and C.firstname like '%" + key + "%' or " +
                "C.branchID = @branch and C.status = 'ACTIVE' and C.surname like '%" + key + "%' or " +
                "C.branchID = @branch and C.status = 'ACTIVE' and C.telephone like '%" + key + "%'", cn);
            command.Parameters.AddWithValue("@branch", CashierMain.branch);
            command.ExecuteNonQuery();
            dr = command.ExecuteReader();
            while (dr.Read())
            {
                dataGridView1.Rows.Add(dr[0].ToString(), dr[1].ToString().ToUpper() + " " + dr[2].ToString().ToUpper(),
                  dr[4].ToString(), dr[3].ToString(), dr[5].ToString());
            }
            dr.Close();
            cn.Close();
        }

        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.Transparent;
        }
        private void ProNAME_TextChanged(object sender, EventArgs e)
        {
            if (String.IsNullOrEmpty(proNAME.Text))
            {
                dataGridView1.Rows.Clear();
            }
            else
            {
                products(proNAME.Text);
            }
        }
    }
}