VINIL.APP/proba/Form/Sales.cs

using System;
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 System.Data.SqlClient;

namespace proba
{
    public partial class Sales : Form
    {
        string id_product;
        string product;
        string description;
        string price;
        string year_publishing;
        string country;
        string edition;
        string genre;
        string performer;
        string supplier;
        public static int countBuyProducts = 0;
        public static double summaBuyProducts = 0;

        DataBase dataBase = new DataBase();
        public Sales()
        {
            InitializeComponent();
        }
        private void CreateColumns()
        {
            dataGridView1.Columns.Add("product", "Номенклатура");
            dataGridView1.Columns.Add("description", "Описание");
            dataGridView1.Columns.Add("price", "Цена");
            dataGridView1.Columns.Add("year_publishing", "Год издания");
            dataGridView1.Columns.Add("country", "Страна производства");
            dataGridView1.Columns.Add("edition", "Издательство");
            dataGridView1.Columns.Add("genre", "Жанр музыки");
            dataGridView1.Columns.Add("performer", "Исполнитель");
            dataGridView1.Columns.Add("supplier", "Поставщик");
        }
        private void ReadSingleRow(DataGridView dgw, IDataRecord record)
        {
            dgw.Rows.Add(record.GetString(0), record.GetString(1), record.GetDouble(2), record.GetString(3), record.GetString(4), record.GetString(5), record.GetString(6), record.GetString(7), record.GetString(8));
        }
        private void RefresDataGird(DataGridView dgw)
        {
            dgw.Rows.Clear();
            string queryString = $"Select P.product, P.description, P.price, P.year_publishing, C.country, E.edition, G.genre, Per.performer, S.name_organization From Products P inner join Country C ON P.id_country = C.id_country inner join Edition E ON P.id_edition = E.id_edition inner join Genre G ON P.id_genre = G.id_genre inner join Performer Per ON P.id_performer = Per.id_performer inner join Supplier S ON P.id_supplier = S.id_supplier LEFT JOIN Sales Sales ON P.id_product = Sales.id_product WHERE Sales.id_product IS NULL";
            SqlCommand command = new SqlCommand(queryString, dataBase.GetConnection());
            dataBase.openConnection();
            SqlDataReader reader = command.ExecuteReader();
            while (reader.Read())
            {
                ReadSingleRow(dgw, reader);
            }
            reader.Close();
        }
        private void Sales_Load(object sender, EventArgs e)
        {
            CreateColumns();
            RefresDataGird(dataGridView1);
        }
        private void button_back_Click_1(object sender, EventArgs e)
        {
            DialogResult dialogResult = MessageBox.Show("Продано товаров: " + countBuyProducts +"\nСовершена продажа на сумму: " + summaBuyProducts, "Информация", MessageBoxButtons.OK);
            if (dialogResult == DialogResult.OK)
            {
                this.Hide();
                MainMenu mainMenu = new MainMenu();
                mainMenu.ShowDialog();
            }
        }
        public void global_FormClosed(object sender, EventArgs e)
        {
            Application.Exit();
        }
        private void button_buy_Click(object sender, EventArgs e)
        {
            if (id_product == null)
            {
                MessageBox.Show("Не выделена номенклатура для покупки");
            }
            else
            {
                this.Hide();
                BuyTools buyTools = new BuyTools(id_product, product, description, price, year_publishing, country, edition, genre, performer, supplier);
                buyTools.ShowDialog();
            }
        }
        private void pictureBox2_Click(object sender, EventArgs e)
        {
            RefresDataGird(dataGridView1);
        }
        private void text_id_view_tools_SelectedIndexChanged(object sender, EventArgs e)
        {
            Search(dataGridView1);
        }
        private void Search(DataGridView dgw)
        {
            dgw.Rows.Clear();
            string searchString = "";
            if (text_name.Text.Replace(" ", "") != "")
            {
                searchString = $"Select P.product, P.description, P.price, P.year_publishing, C.country, E.edition, G.genre, Per.performer, S.name_organization From Products P inner join Country C ON P.id_country = C.id_country inner join Edition E ON P.id_edition = E.id_edition inner join Genre G ON P.id_genre = G.id_genre inner join Performer Per ON P.id_performer = Per.id_performer inner join Supplier S ON P.id_supplier = S.id_supplier LEFT JOIN Sales Sales ON P.id_product = Sales.id_product WHERE Sales.id_product IS NULL and product like '%" + text_name.Text + "%'";
            }
            else
            if (text_price1.Text.Replace(" ", "") != "")
            {
                searchString = $"Select P.product, P.description, P.price, P.year_publishing, C.country, E.edition, G.genre, Per.performer, S.name_organization From Products P inner join Country C ON P.id_country = C.id_country inner join Edition E ON P.id_edition = E.id_edition inner join Genre G ON P.id_genre = G.id_genre inner join Performer Per ON P.id_performer = Per.id_performer inner join Supplier S ON P.id_supplier = S.id_supplier LEFT JOIN Sales Sales ON P.id_product = Sales.id_product WHERE Sales.id_product IS NULL and price > '" + text_price1.Text + "'";
            }
            else
            if (text_price2.Text.Replace(" ", "") != "")
            {
                searchString = $"Select P.product, P.description, P.price, P.year_publishing, C.country, E.edition, G.genre, Per.performer, S.name_organization From Products P inner join Country C ON P.id_country = C.id_country inner join Edition E ON P.id_edition = E.id_edition inner join Genre G ON P.id_genre = G.id_genre inner join Performer Per ON P.id_performer = Per.id_performer inner join Supplier S ON P.id_supplier = S.id_supplier LEFT JOIN Sales Sales ON P.id_product = Sales.id_product WHERE Sales.id_product IS NULL and price < '" + text_price2.Text + "'";
            }
            else
            {
                searchString = $"Select P.product, P.description, P.price, P.year_publishing, C.country, E.edition, G.genre, Per.performer, S.name_organization From Products P inner join Country C ON P.id_country = C.id_country inner join Edition E ON P.id_edition = E.id_edition inner join Genre G ON P.id_genre = G.id_genre inner join Performer Per ON P.id_performer = Per.id_performer inner join Supplier S ON P.id_supplier = S.id_supplier LEFT JOIN Sales Sales ON P.id_product = Sales.id_product WHERE Sales.id_product IS NULL";
            }
            SqlCommand com = new SqlCommand(searchString, dataBase.GetConnection());
            dataBase.openConnection();
            SqlDataReader read = com.ExecuteReader();
            while (read.Read())
            {
                ReadSingleRow(dgw, read);
            }
            read.Close();
        }
        private void text_name_TextChanged(object sender, EventArgs e)
        {
            Search(dataGridView1);
        }
        private void text_price1_TextChanged(object sender, EventArgs e)
        {
            Search(dataGridView1);
        }
        private void text_price2_TextChanged(object sender, EventArgs e)
        {
            Search(dataGridView1);
        }
        private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            var selectedRow = e.RowIndex;
            if (e.RowIndex >= 0)
            {
                DataGridViewRow row = dataGridView1.Rows[selectedRow];
                dataBase.openConnection();
                product = row.Cells[0].Value.ToString();
                description = row.Cells[1].Value.ToString();
                price = row.Cells[2].Value.ToString();
                year_publishing = row.Cells[3].Value.ToString();
                country = row.Cells[4].Value.ToString();
                edition = row.Cells[5].Value.ToString();
                genre = row.Cells[6].Value.ToString();
                performer = row.Cells[7].Value.ToString();
                supplier = row.Cells[8].Value.ToString();
                SqlCommand sqlCommand_product = new SqlCommand($"SELECT id_product From Products WHERE product = '{product}'", dataBase.GetConnection());
                id_product = sqlCommand_product.ExecuteScalar().ToString();
                dataBase.closeConnection();
            }
        }
    }
}