UP_wpf/Sessioa/Pages/OrderCard.xaml.cs

using Sessioa.BaseModel;
using Sessioa.Classes;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows;
using System.Windows.Controls;

namespace Sessioa.Pages
{
    /// <summary>
    /// Логика взаимодействия для OrderCard.xaml
    /// </summary>
    public partial class OrderCard : Page
    {
        List<Product> products = (List<Product>)Application.Current.Properties["ListOrderUser"];
        Dictionary<string, int> keyValuePairs = (Dictionary<string, int>)(Application.Current.Properties["ListOrderCountUser"]);
        //{
        //    {"djkdkla", 19 }
        //};
        User user = null;
        public OrderCard(User userSign)
        {
            InitializeComponent();
            user = userSign;
            LB_ProductsOrder.ItemsSource = products;
            if (keyValuePairs.Count == 0)
            {
                foreach (Product product in products)
                {
                    keyValuePairs.Add($"{product.ProductArticleNumber}", 1);
                }
            }
            else
            {
                foreach (Product product in products)
                {
                    try
                    {
                        keyValuePairs.Add($"{product.ProductArticleNumber}", 1);
                    }
                    catch { }
                }
            }
            ItogoSkidka();
            //keyValuePairs.Add("dawlk", 2718);
            //foreach(KeyValuePair<string, int> pair in keyValuePairs)
            //{
            //    pair.Key; //1
            //    pair.Value; //2
            //}
        }

        private void countPr_Loaded(object sender, RoutedEventArgs e)
        {
            TextBlock textBlock = (TextBlock)sender;
            Product product = BaseClass.C_Base.Product.FirstOrDefault(x => x.ProductArticleNumber == textBlock.Uid);
            if (product.ProductDiscountAmount != null)
                textBlock.TextDecorations = TextDecorations.Strikethrough;
        }

        private void countDPr_Loaded(object sender, RoutedEventArgs e)
        {
            TextBlock textBlock = (TextBlock)sender;
            Product product = BaseClass.C_Base.Product.FirstOrDefault(x => x.ProductArticleNumber == textBlock.Uid);
            if (product.ProductDiscountAmount != null)
            {
                textBlock.Visibility = Visibility.Visible;
                textBlock.Text = $" {(double)(product.ProductCost - product.ProductCost * product.ProductDiscountAmount / 100)} ₽";
            }
        }

        private void Discount_Loaded(object sender, RoutedEventArgs e)
        {
            TextBlock textBlock = (TextBlock)sender;
            Product product = BaseClass.C_Base.Product.FirstOrDefault(x => x.ProductArticleNumber == textBlock.Uid);
            if (product.ProductDiscountAmount != null)
            {
                textBlock.Visibility = Visibility.Visible;
                textBlock.Text = $"Скидка {product.ProductDiscountAmount}%";
            }
        }

        private void B_Back_Click(object sender, RoutedEventArgs e)
        {
            Application.Current.Properties["ListOrderCountUser"] = keyValuePairs;
            FrameClass.C_Frame.Navigate(new ProductsPage(user));
        }

        private void B_Save_Click(object sender, RoutedEventArgs e)
        {
            Application.Current.Properties["ListOrderUser"] = new List<Product>();
            Application.Current.Properties["ListOrderCountUser"] = new Dictionary<string, int>();
            MessageBoxResult mbr = MessageBox.Show("Заказ оформлен.", "Уведомление", MessageBoxButton.OK, MessageBoxImage.Information);
            if (mbr == MessageBoxResult.OK)
                FrameClass.C_Frame.Navigate(new ProductsPage(user));
        }

        private void Back_B_Click(object sender, RoutedEventArgs e)
        {
            Button bBack = (Button)sender;
            Grid grid = (Grid)bBack.Parent;
            TextBlock textBlock = (TextBlock)grid.FindName("CountProduct");
            Product pr = BaseClass.C_Base.Product.FirstOrDefault(x => x.ProductArticleNumber == bBack.Uid);
            if (pr != null)
            {
                foreach (KeyValuePair<string, int> pair in keyValuePairs)
                {
                    if (pair.Key == bBack.Uid)
                    {
                        if (pair.Value > 1)
                        {
                            keyValuePairs[pair.Key]--;
                            textBlock.Text = keyValuePairs[pair.Key].ToString();
                            break;
                        }
                    }
                }
            }
            ItogoSkidka();
        }

        private void Next_B_Click(object sender, RoutedEventArgs e)
        {
            Button bNext = (Button)sender;
            Grid grid = (Grid)bNext.Parent;
            TextBlock textBlock = (TextBlock)grid.FindName("CountProduct");
            Product pr = BaseClass.C_Base.Product.FirstOrDefault(x => x.ProductArticleNumber == bNext.Uid);
            if (pr != null)
            {
                foreach (KeyValuePair<string, int> pair in keyValuePairs)
                {
                    if (pair.Key == bNext.Uid)
                    {
                        keyValuePairs[pair.Key]++;
                        textBlock.Text = keyValuePairs[pair.Key].ToString();
                        break;
                    }
                }
            }
            ItogoSkidka();
        }

        private void CountProduct_Loaded(object sender, RoutedEventArgs e)
        {
            TextBlock tb = (TextBlock)sender;
            if (keyValuePairs.Count > 0)
            {
                foreach (KeyValuePair<string, int> pair in keyValuePairs)
                {
                    if (pair.Key == tb.Uid)
                    {
                        tb.Text = keyValuePairs[pair.Key].ToString();
                        break;
                    }
                }
            }
        }
        public void ItogoSkidka()
        {
            decimal itogoBezSkidki = 0;
            foreach(Product item in products)
            {
                foreach(KeyValuePair<string, int> pair in keyValuePairs)
                {
                    if(pair.Key == item.ProductArticleNumber)
                    {
                        itogoBezSkidki += item.ProductCost * pair.Value;
                    }
                }
            }
            decimal itogoSoSkidkoy = 0;
            foreach (Product item in products)
            {
                foreach (KeyValuePair<string, int> pair in keyValuePairs)
                {
                    if (pair.Key == item.ProductArticleNumber)
                    {
                        if(item.ProductDiscountAmount != null)
                        {
                            itogoSoSkidkoy += (item.ProductCost - (item.ProductCost * ((decimal)item.ProductDiscountAmount / 100))) * pair.Value;
                        }
                        else
                            itogoSoSkidkoy += item.ProductCost * pair.Value;
                    }
                }
            }
            decimal ITOGO = Math.Round((1 - (itogoSoSkidkoy / itogoBezSkidki)) * 100, 2);
            TB_ItogoSkidka.Text = $"Скидка {ITOGO}%";
            TB_Itogo.Text = $"{(double)itogoSoSkidkoy} ₽";
        }
    }
}