Добавить 'help'

help

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+//Работа с заглушкой картинки:
+<Page.Resources>
+        <BitmapImage x:Key="defaultImage" UriSource="/image/picture.png"/>
+    </Page.Resources>
+<Image Width="100" Height="100" Source="{Binding ProductPhoto, TargetNullValue={StaticResource defaultImage}}"/>
+//Поиск, фильтрация, сортировка:
+void Filter()
+        {
+            List<Product> product = new List<Product>();
+            product = ClassDBase.DB.Product.ToList();
+
+            //Поиск по названию
+            if (!string.IsNullOrWhiteSpace(SearchName.Text))  // Проверка пустую запись и запись состоящую из пробелов
+            {
+                product = product.Where(x => x.ProductName.ToLower().Contains(SearchName.Text.ToLower())).ToList();
+                if (product.Count == 0)
+                {
+                    MessageBox.Show("Записей с таким названием нет");
+                    SearchName.Text = "";
+                }
+            }
+            //Фильтрация по размеру скидки
+            switch (Filtering.SelectedIndex)
+            {
+                case 0:
+                    {
+                        product = product.ToList();
+                    }
+                    break;
+                case 1:
+                    {
+                        product = product.Where(x => ((x.ProductDiscountAmount >= 0) && (x.ProductDiscountAmount < 10))).ToList();
+                    }
+                    break;
+                case 2:
+                    {
+                        product = product.Where(x => ((x.ProductDiscountAmount >= 10) && (x.ProductDiscountAmount < 15))).ToList();
+                    }
+                    break;
+                case 3:
+                    {
+                        product = product.Where(x => (x.ProductDiscountAmount>= 15)).ToList();
+
+                    }
+                    break;
+                
+            }
+            //сортировка
+            switch (Sorting.SelectedIndex)
+            {
+                case 0:
+                    {
+                        product.Sort((x, y) => x.ProductCost.CompareTo(y.ProductCost));
+                    }
+                    break;
+                case 1:
+                    {
+                        product.Sort((x, y) => x.ProductCost.CompareTo(y.ProductCost));
+                        product.Reverse();
+                    }
+                    break;
+            }
+
+            ListProduct.ItemsSource = product;
+            
+//количество записей на странице
+            if (product.Count == 0)
+            {
+                MessageBox.Show("нет записей");
+                CountProduct.Text = ClassDBase.DB.Product.ToList().Count + "/" + ClassDBase.DB.Product.ToList().Count;
+                SearchName.Text = "";
+                Sorting.SelectedIndex = 0;
+                Filtering.SelectedIndex = 0;
+
+            }
+            CountProduct.Text = product.Count + "/" + ClassDBase.DB.Product.ToList().Count;
+        }
+// добавление в корзину
+// в классе с создание объекта бд
+public static List<Product> products = new List<Product>();
+// событие на правую кнопку мыши
+<Grid.ContextMenu>
+                                <ContextMenu>
+                                    <MenuItem Header="Добавить к заказу" Click="MenuItem_Click" Uid="{Binding ProductArticleNumber}"/>
+                                </ContextMenu>
+</Grid.ContextMenu>
+  private void MenuItem_Click(object sender, RoutedEventArgs e)
+        {
+            MenuItem mi = (MenuItem)sender;
+            string index = mi.Uid;
+            Product product = ClassDBase.DB.Product.FirstOrDefault(x => x.ProductArticleNumber == index);
+            ClassDBase.products.Add(product);
+            ShowOrders.Visibility = Visibility.Visible;
+        }
+// обновление суммы товаров корзины
+  private void ButonDelete_Click(object sender, RoutedEventArgs e)
+        {
+            Button Buton = (Button)sender;
+            int index = Convert.ToInt32(Buton.Uid);
+            ProductBasket productBasket = bascet.FirstOrDefault(x => x.product.ID == index);
+            _ = bascet.Remove(productBasket);
+            if (bascet.Count == 0)
+            {
+                Close();
+            }
+            lvProduct.Items.Refresh();
+            calculateSummaAndDiscount();
+        }
+
+        /// <summary>
+        /// Подсчёт суммы заказа и скидок
+        /// </summary>
+        private void calculateSummaAndDiscount()
+        {
+            summa = 0;
+            summaDiscount = 0;
+            foreach (ProductBasket productBasket in bascet)
+            {
+                summa += productBasket.count * productBasket.product.costWithDiscount;
+                summaDiscount += productBasket.count * ((double)productBasket.product.ProductCost - productBasket.product.costWithDiscount);
+            }
+            TBSumma.Text = "Сумма заказа: " + summa.ToString("0.00") + " руб.";
+            TBSummaDiscount.Text = "Сумма скидки: " + summaDiscount.ToString("0.00") + " руб.";
+        }
+
+        private void TextBox_TextChanged(object sender, TextChangedEventArgs e)
+        {
+            TextBox TB = (TextBox)sender;
+            int index = Convert.ToInt32(TB.Uid);
+            ProductBasket productBasket = bascet.FirstOrDefault(x => x.product.ID == index);
+            productBasket.count = TB.Text.Replace(" ", "") == "" ? 0 : Convert.ToInt32(TB.Text);
+            if (productBasket.count == 0) // Если колличество 0, то продукт из корзины удаляется
+            {
+                _ = bascet.Remove(productBasket);
+            }
+            if (bascet.Count == 0) // Если в корзине нет товаров, то окно закрывается
+            {
+                Close();
+            }
+            lvProduct.Items.Refresh();
+            calculateSummaAndDiscount();
+        }
+
+// вывод на всякий
+<ListView Grid.Row="3" Name="ListProduct" Height="300" ScrollViewer.HorizontalScrollBarVisibility="Hidden" HorizontalContentAlignment="Stretch">
+            <ListView.ItemTemplate>
+                <DataTemplate>
+                    <Border Style="{StaticResource BorderStyle}">
+                        <Grid Height="150"  VerticalAlignment="Center"  Background="{Binding Brush}">
+                            <Grid.ContextMenu>
+                                <ContextMenu>
+                                    <MenuItem Header="Добавить к заказу" Click="MenuItem_Click" Uid="{Binding ProductArticleNumber}"/>
+                                </ContextMenu>
+                            </Grid.ContextMenu>
+                            <Grid.ColumnDefinitions>
+                                <ColumnDefinition Width="300"/>
+                                <ColumnDefinition/>
+                                <ColumnDefinition/>
+                            </Grid.ColumnDefinitions>
+                            <Grid Grid.Column="0" >
+                                <Image Width="100" Height="100" Source="{Binding ProductPhoto, TargetNullValue={StaticResource defaultImage}}"/>
+                            </Grid>
+                            <Grid Grid.Column="1">
+                                <Grid>
+                                    <StackPanel>
+                                        <StackPanel Orientation="Horizontal">
+                                            <TextBlock Text="Название:"/>
+                                            <TextBlock Name="product" Text="{Binding ProductName}" FontWeight="Bold" Style="{StaticResource TextList}"></TextBlock>
+                                        </StackPanel>
+                                        <StackPanel Orientation="Horizontal">
+                                            <TextBlock Text="Описание:"/>
+                                            <TextBlock Name="Description" Text="{Binding ProductDescription}" Style="{StaticResource TextList}"></TextBlock>
+                                        </StackPanel>
+                                        <StackPanel Orientation="Horizontal">
+                                            <TextBlock Text="Производитель:"/>
+                                            <TextBlock Name="Manufacturer" Text="{Binding Manufacturer.NameProductManufacturer}" Style="{StaticResource TextList}"></TextBlock>
+                                        </StackPanel>
+                                        <StackPanel Orientation="Horizontal">
+                                            <TextBlock Text="Цена:"/>
+                                            <TextBlock Name="Price" Text="{Binding Price}" Style="{StaticResource TextList}"></TextBlock>
+                                            <TextBlock Name="Cost" Text="{Binding Cost}" TextDecorations="Strikethrough" Style="{StaticResource TextList}"></TextBlock>
+                                        </StackPanel>                                     
+                                    </StackPanel>
+                                </Grid>                                
+                            </Grid>
+                            <Grid Grid.Column="2">
+                                <Grid.RowDefinitions>
+                                    <RowDefinition Height="1*"/>
+                                    <RowDefinition Height="1*"/>
+                                </Grid.RowDefinitions>
+                                <StackPanel Orientation="Horizontal" Grid.Row="0">
+                                    <TextBlock Name="Discount" Text="{Binding Discount}" Style="{StaticResource TextList}"></TextBlock>
+                                </StackPanel>
+                                <Button Grid.Row="1" Name="Delete" Visibility="Collapsed" Content="Удалить" Click="Delete_Click" Uid="{Binding ProductArticleNumber}" Loaded="Delete_Loaded" Template="{StaticResource ButtonInElement}"/>
+                            </Grid>
+                        </Grid>
+                    </Border>
+                </DataTemplate>
+            </ListView.ItemTemplate>
+        </ListView>