Biskilog/BISKILOG POS PREMIUM/Products Module/InfoWindow.cs

using BiskLog_Point_Of_Sale.Classes;
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.Products_Module
{
    public partial class InfoWindow : Form
    {
        SqlConnection cn;
        SqlCommand cm;
        SqlDataReader dr;
        DatabaseConn conn = new DatabaseConn();
        string currency;
        public InfoWindow(string ID, string name)
        {
            InitializeComponent();
            cn = new SqlConnection(conn.MyConnection());
            currency = Settings.Default.currrencyCode + " ";
            productIDlbl.Text = ID;
            productNamelbl.Text = name;
        }

        private void exitBTN_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.Abort;
            this.Close();
        }
        public int LoadDetails()
        {
            try
            {
                dataGridView1.Invoke(new Action(() =>
                {
                    cn.Open();
                    cm = new SqlCommand("Select u.unitname,I.quantity,p.price from tblProduct p Inner Join UnitOfMeasure u On u.unitCode = p.baseUnit Inner Join tblInventory I On I.pcode = p.pcode " +
                        "where p.branchID = @branchID and p.pcode = @pcode " +
                        "Select u.unitname, I.quantity / PAU.[quantity/unit] as quantity, PAU.[price/unit] from tblProduct p Inner Join ProductAltUnit PAU On PAU.pcode = p.pcode " +
                        "Inner Join UnitOfMeasure u On u.unitCode = PAU.unitCode Inner Join tblInventory I On I.pcode = p.pcode where p.branchID = @branchID and p.pcode = @pcode", cn);
                    cm.Parameters.AddWithValue("@branchID", Settings.Default.BranchID);
                    cm.Parameters.AddWithValue("@pcode", productIDlbl.Text);
                    cm.ExecuteNonQuery();
                    dr = cm.ExecuteReader();
                    dr.Read();
                    if (dr.HasRows)
                    {
                        dataGridView1.Rows.Add(dr[0].ToString(),dr[1].ToString(),currency + dr[2].ToString());
                    }
                    dr.NextResult();
                    while (dr.Read())
                    {
                        dataGridView1.Rows.Add(dr[0].ToString(), dr[1].ToString(), currency + dr[2].ToString());
                    }
                    dr.Close();
                    cn.Close();
                }));
                return 1;
            }
            catch (Exception ex)
            {
                ErrorLogging.WriteToFile(ex.ToString());
                cn.Close();
                return 0;
            }
        }
        private async void InfoWindow_Load(object sender, EventArgs e)
        {
            Task<int> task = new Task<int>(LoadDetails);
            task.Start();
            await task;
        }
    }
}