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Создание окна

MainWindow.xaml

<Window x:Class="WpfApp2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp2"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Window.Resources>
        <Style 
        x:Key="StackStyle" 
        TargetType="ListBox">
            <Setter Property="ItemsPanel">
                <Setter.Value>
                    <ItemsPanelTemplate>
                        <StackPanel 
                        Orientation="Vertical"/>
                    </ItemsPanelTemplate>
                </Setter.Value>
            </Setter>
        </Style>
        <Style 
        x:Key="WrapStyle" 
        TargetType="ListBox">
            <Setter Property="ItemsPanel">
                <Setter.Value>
                    <ItemsPanelTemplate>
                        <WrapPanel 
                        HorizontalAlignment="Center"
                        ItemWidth="200"/>
                    </ItemsPanelTemplate>
                </Setter.Value>
            </Setter>
        </Style>
        <BitmapImage 
        x:Key='defaultImage' 
        UriSource='/img/1.jpg' />
    </Window.Resources>
    <Grid ShowGridLines="True">
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"/>
            <RowDefinition />
            <RowDefinition Height="auto"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="200"/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>

        <!-- типа логотип компании -->
        <Image 
        Source="./img/1.jpg" 
        Grid.RowSpan="2" HorizontalAlignment="Right"/>

        <ListBox
  
        Grid.Column="1"
Grid.Row="1"
Background="White"
ItemsSource="{Binding ClientList}" ScrollViewer.HorizontalScrollBarVisibility="Disabled"
                        MouseDoubleClick="ClientListBox_MouseDoubleClick"
         x:Name="ClientListBox">

            <ListBox.ItemsPanel>
                <ItemsPanelTemplate>
                    <WrapPanel 
        HorizontalAlignment="Center" />
                </ItemsPanelTemplate>
            </ListBox.ItemsPanel>
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <Border 
        BorderThickness="1" 
        BorderBrush="Black" 
        CornerRadius="5">
                        <Grid 
                        Width="200"
Margin="10" 
HorizontalAlignment="Stretch">

                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="64"/>
                                <ColumnDefinition Width="*"/>
                                <ColumnDefinition Width="auto"/>
                            </Grid.ColumnDefinitions>
                            <Image
Width="64" 
Height="64"
Source="{Binding ImageBitmap}" />
                            <StackPanel
Grid.Column="1"
Margin="5"
Orientation="Vertical">

                                <TextBlock 
    Text="{Binding Name}"/>

                                <TextBlock 
    Text="{Binding Place}"/>

                            </StackPanel>
                            <TextBlock 
Grid.Column="2"
Text="{Binding Price}"/>
                        </Grid>
                    </Border>
                </DataTemplate>
            </ListBox.ItemTemplate>

        </ListBox>
        <StackPanel 
        Orientation="Vertical"
        Grid.RowSpan="3"
        VerticalAlignment="Bottom">
            <Button 
            x:Name="ExitButton"
            Content="Выход" 
            Click="ExitButton_Click"
            Height="50"/>
        </StackPanel>

        <WrapPanel
        Orientation="Horizontal"
        Grid.Column="1"
        MinHeight="50">
            <Label 
    Content="Искать:" 
    VerticalAlignment="Center"/>
            <TextBox
    Width="200"
    VerticalAlignment="Center"
    x:Name="SearchFilterTextBox" 
    KeyUp="SearchFilter_KeyUp"/>

            <ComboBox
    Name="CategoryFilterComboBox"
    SelectionChanged="ClientCategoryFilterComboBox_selectionChanged"
    VerticalAlignment="Center"
    MinWidth="100"
    SelectedIndex="0"
    ItemsSource="{Binding ClientCategoryList}">

                <ComboBox.ItemTemplate>
                    <DataTemplate>
                        <Label 
                Content="{Binding title}"/>
                    </DataTemplate>
                </ComboBox.ItemTemplate>
            </ComboBox>
            <Label 
    Content="Цена:"
    VerticalAlignment="Center"/>
            <ComboBox
    Name="PriceFilterComboBox"
    SelectionChanged="ClientPriceFilterComboBox_selectionChanged"
    VerticalAlignment="Center"
    MinWidth="100"
    SelectedIndex="0"
    ItemsSource="{Binding ClientPriceList}">

                <ComboBox.ItemTemplate>
                    <DataTemplate>
                        <Label 
            Content="{Binding title}"/>
                    </DataTemplate>
                </ComboBox.ItemTemplate>
            </ComboBox>
            <Label 
    Content="Возраст:" 
    VerticalAlignment="Center"/>
            <RadioButton
    GroupName="Age"
    Tag="1"
    Content="Сначала взрослые"
    IsChecked="True"
    Checked="RadioButton_Checked"
    VerticalAlignment="Center"/>
            <RadioButton
    GroupName="Age"
    Tag="2"
    Content="Сначала дети"
    Checked="RadioButton_Checked"
    VerticalAlignment="Center"/>
            <!-- минимальную высоту я тут поставил, чтобы верхнюю строку сетки было видно. В реальном приложении она не нужна -->
        </WrapPanel>
    </Grid>
</Window>

MainWindow.xaml.cs

using System.ComponentModel;
using System.IO;
using System.Runtime.Serialization.Json;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using WpfApp2.model;
using WpfApp2.Windows;

namespace WpfApp2
{
    public partial class MainWindow : Window, INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        private void Invalidate()
        {
            if (PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs("ClientList"));
        }
        public string selectedCategory = "Все категории";
        public ClientPrice? selectedPrice = null;

        private IEnumerable<Client> _ClientList;
        public IEnumerable<Client> ClientList
        {
            get
            {
                var res = _ClientList;
                res = res
                   .Where(c => (selectedPrice == null || (c.Price >= selectedPrice.PriceFrom && c.Price < selectedPrice.PriceTo)))
                   .Where(c => (c.Category == selectedCategory || selectedCategory == "Все категории"));


                if (searchFilter != "")
                    res = res.Where(c => c.Name.IndexOf(
                        searchFilter,
                        StringComparison.OrdinalIgnoreCase) >= 0 || c.Category.IndexOf(
                        searchFilter,
                        StringComparison.OrdinalIgnoreCase) >= 0 || c.Place.IndexOf(
                        searchFilter,
                        StringComparison.OrdinalIgnoreCase) >= 0);
                if (sortAsc) res = res.OrderBy(c => c.Price);
                else res = res.OrderByDescending(c => c.Price);
                if (sortAsc) res = res.OrderBy(c => c.Price);
                else res = res.OrderByDescending(c => c.Price);

                return res;
            }
            set
            {
                _ClientList = value;
            }
        }
        public List<Client> Client { get; set; }
        public List<ClientCategory> ClientCategoryList { get; set; }
        public List<ClientPrice> ClientPriceList { get; set; }


        public MainWindow()
        {
            {
                InitializeComponent();
                DataContext = this;
                Globals.dataProvider = new JSONDataProvider();
                ClientList = Globals.dataProvider.getClient();
                ClientPriceList = Globals.dataProvider.getPrice().ToList();
                ClientCategoryList = Globals.dataProvider.getCategory().ToList();
                ClientCategoryList.Insert(0, new ClientCategory() { title = "Все категории" });
            }
        }

        public class JSONDataProvider : LocalDataProvider, IDataProvider
        {
            private List<Client> _ClientList;

            public JSONDataProvider()
            {
                var serializer = new DataContractJsonSerializer(typeof(Client[]));
                using (var sr = new StreamReader("./data.json"))
                {
                    _ClientList = ((Client[])serializer.ReadObject(sr.BaseStream)).ToList();
                }
            }

            public IEnumerable<Client> getClient()
            {
                return _ClientList;
            }
        }
        private void ExitButton_Click(object sender, RoutedEventArgs e)
        {
            Application.Current.Shutdown();

        }
        private string searchFilter = "";

        private void SearchFilter_KeyUp(object sender, KeyEventArgs e)
        {
            searchFilter = SearchFilterTextBox.Text;
            Invalidate();
        }

        private void ClientCategoryFilterComboBox_selectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            selectedCategory = (CategoryFilterComboBox.SelectedItem as ClientCategory).title;
            Invalidate();
        }


        private void ClientListBox_MouseDoubleClick(
   object sender,
   MouseButtonEventArgs e)
        {
            // в создаваемое окно передаем выбранного котика
            var detailWindow = new DetailWindow(
                ClientListBox.SelectedItem as Client);

            detailWindow.ShowDialog();
        }

        private void ClientPriceFilterComboBox_selectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            selectedPrice = PriceFilterComboBox.SelectedItem as ClientPrice;
            Invalidate();
        }

        private bool sortAsc = true;

        private void RadioButton_Checked(object sender, RoutedEventArgs e)
        {
            sortAsc = (sender as RadioButton).Tag.ToString() == "1";
            Invalidate();
        }

        private void DataGrid_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {

        }
    }
    interface IDataProvider
    {
        IEnumerable<Client> getClient();
        IEnumerable<ClientPrice> getPrice();
        IEnumerable<ClientCategory> getCategory();
    }
    public class LocalDataProvider : IDataProvider
    {

        public IEnumerable<ClientCategory> getCategory()
        {
            return new ClientCategory[]
            {
                new ClientCategory()
                {
                    title="По России"

                },
                new ClientCategory()
                {
                    title="За границей"
                },
            };
        }
        public IEnumerable<ClientPrice> getPrice()
        {
            return new ClientPrice[]
            {
                    new ClientPrice()
                    {
                        title = "Все цены",
                        PriceFrom = 500,
                        PriceTo = 30000
                    },
                    new ClientPrice()
                    {
                        title = "Низкая цена",
                        PriceFrom = 500,
                        PriceTo = 3000

                    },
                    new ClientPrice()
                    {
                        title = "Средняя цена",
                        PriceFrom = 3000,
                        PriceTo = 15000

                    },
                    new ClientPrice()
                    {
                        title = "Высокая цена",
                        PriceFrom = 15000,
                        PriceTo = 30000

                    }


            };
        }

        public IEnumerable<Client> getClient()
        {
            return new Client[]{
            new Client{
                Name = "Никита",
                Age = 20,
                Price=2300,
                Category="По России",
                Place="Москва"

            },
            new Client{
                Name = "Маша",
                Age = 15,
                Price=5000,
                Category="По России",
                Place="Сочи"

            },
            new Client{
                Name = "Алиса",
                Age = 35,
                Price=15000,
                Category="За границей",
                Place="Токио"

            },
             new Client{
                 Name = "Леша",
                Age = 19,
                Price=20000,
                Category="За границей",
                Place="Южная Корея"

             },
             new Client{
                 Name = "Андрей",
                Age = 28,
                Price=3000,
                Category="По России",
                Place="Крым"

             },
                 new Client{
                 Name = "Костя",
                Age = 14,
                Price=18000,
                Category="За границей",
               Place="Токио"

                 },
             new Client{
                 Name = "Даша",
                Age = 12,
                Price=25000,
                Category="За границей",
                Place="Лондон"

             },
             new Client{
                 Name = "Ольга",
                Age = 55,
                Price=22000,
                Category="За границей",
               Place="Люксембург"

             },
             new Client{
                  Name = "Катя",
                Age = 30,
                Price=1500,
                Category="По России",
               Place="Адлер"

             },
             new Client{
                 Name = "Анжела",
                Age = 61,
                Price=25000,
                Category="За границей",
                Place="Мальдивы"

             },
             new Client{
                  Name = "Миша",
                Age = 17,
                Price=30000,
                Category="За границей",
                Place="Дубаи"

             },

        };

        }

    
    }
}

DetailWindow.xaml

<Window x:Class="WpfApp2.Windows.DetailWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp2.Windows"
        mc:Ignorable="d"
        Title="DetailWindow" Height="450" Width="800">
    <Grid RenderTransformOrigin="0.498,0.573">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="64"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="auto"/>
        </Grid.ColumnDefinitions>

        <Image Source="{Binding ImageBitmap}" Grid.ColumnSpan="1" Margin="2,83,2,183"/>
        <StackPanel  Orientation="Vertical" Margin="0,0,27,190" Grid.Column="1">
            <TextBlock Text="{Binding Name}"/>
            <TextBlock Text="{Binding Price}"/>
            <TextBlock Text="{Binding Place}"/>
            <TextBlock Text="{Binding Category}"/>
            <TextBlock Text="{Binding DateFlight, StringFormat='dd.MM.yyyy'}"/>
            <TextBlock Text="{Binding IsActive}"/>
        </StackPanel>
        <TextBlock Grid.Column="2"  Text="{Binding Age}" Margin="0,2,10,0"/>
        <Button IsCancel="True" Click="ExitButton_Click" Margin="20,273,46,26" Grid.Column="1" Background="Pink">OK</Button>
        
    </Grid>
</Window>

DetailWindow.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using WpfApp2.model;

namespace WpfApp2.Windows
{
    /// <summary>
    /// Логика взаимодействия для DetailWindow.xaml
    /// </summary>
    public partial class DetailWindow : Window
    {
        public Client currentClient { get; set; }
        public DetailWindow(Client currentClient)
        {
            this.currentClient = currentClient;

            InitializeComponent();
            DataContext = this.currentClient;
        }
        private void ExitButton_Click(object sender, RoutedEventArgs e)
        {
            this.DialogResult = true;

        }
    }
}