Biskilog/BISKILOG POS PREMIUM/Cashier Module/Invoice/InvoiceMain.cs

using BiskLog_Point_Of_Sale.Cashier_Module;
using BiskLog_Point_Of_Sale.Cashier_Module.Invoice;
using BiskLog_Point_Of_Sale.Classes;
using BiskLog_Point_Of_Sale.Invoice;
using BiskLog_Point_Of_Sale.Properties;
using Point_Of_Sale_Managment.CashierModule;
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 Point_Of_Sale_Managment.Cashier_Module.Invoice
{
    public partial class CashierInvoiceMain : Form
    {
        SqlConnection cn;
        SqlCommand cm;
        SqlDataReader dr;
        DatabaseConn conn = new DatabaseConn();
        CashierMain mainForm;
        public CashierInvoiceMain(CashierMain form = null)
        {
            InitializeComponent();
            cn = new SqlConnection(conn.MyConnection());
            holding.Left = (ClientSize.Width - holding.Width) / 2;
            if (form != null)
            {
                mainForm = form;
            }
        }

        private async void InvoiceMain_Load(object sender, EventArgs e)
        {
            Task<int> task = new Task<int>(LoadInvoice);
            holding.Visible = true;
            task.Start();
            await task;
            holding.Visible = false;
        }
        private void AddProducts_Click(object sender, EventArgs e)
        {
            CashierAddInvoice newInvoice = new CashierAddInvoice(this);
            newInvoice.BringToFront();
            newInvoice.ShowDialog();
        }
        public int LoadInvoice()
        {
            try
            {
                int i = 1;
                cn.Open();
                dataGridView1.Invoke(new Action(() =>
                {
                    dataGridView1.Rows.Clear();
                    cm = new SqlCommand("Select Distinct invoiceID,count(invoiceID),dateGenerated,generatedBy,sum(totalprice),status " +
                        "from tblInvoice where branchID = @branchID and invoiceID like '%" + txtSearch.Text + "%'group by invoiceID,dateGenerated," +
                        "generatedBy,status order by dateGenerated desc", cn);
                    cm.Parameters.AddWithValue("@branchID", Settings.Default.BranchID);
                    cm.ExecuteNonQuery();
                    dr = cm.ExecuteReader();
                    while (dr.Read())
                    {
                        dataGridView1.Rows.Add(i, dr[0].ToString(), dr[1].ToString(), Convert.ToDateTime(dr[2].ToString()).ToLongDateString(),
                            dr[3].ToString(), dr[4].ToString(), dr[5].ToString());
                        i++;
                    }
                }));
                dr.Close();
                cn.Close();
                return 1;
            }
            catch
            {
                cn.Close();
                return 0;
            }
        }
        private async void TxtSearch_TextChanged(object sender, EventArgs e)
        {
            Task<int> task = new Task<int>(LoadInvoice);
            holding.Visible = true;
            task.Start();
            await task;
            holding.Visible = false;
        }

        private void DataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex != -1)
            {
                string id = dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString();
                string cost = dataGridView1.Rows[e.RowIndex].Cells[5].Value.ToString();
                string status = dataGridView1.Rows[e.RowIndex].Cells[6].Value.ToString();
                CashierInvoiceDialog invoice = new CashierInvoiceDialog(this, id, cost, status);
                invoice.BringToFront();
                invoice.ShowDialog();
            }
        }
        public void ShowSalesPOS(Form form, List<InvoicePOS> invoice,string id)
        {
            try
            {
                mainForm.POS(invoice: invoice, id: id);
                form.Close();
            }
            catch (Exception ex)
            {
                ErrorLogging.WriteToFile(ex.ToString());
            }
        }
    }
}