lab4/WpfApp3/MainWindow.xaml.cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Media;

namespace WpfApp3
{
    public partial class MainWindow : Window
    {
        public ObservableCollection<Student> StudentList { get; set; }
        private Dictionary<string, object> filters = new Dictionary<string, object>();
        private string currentStyle = "StackStyle";


        public MainWindow()
        {
            InitializeComponent();
            DataContext = this;
            Globals.dataProvider = new LocalDataProvider();
            StudentList = new ObservableCollection<Student>(Globals.dataProvider.GetStudents());
            List<string> styles = new List<string> { "light", "dark" };
            styleBox.SelectionChanged += ThemeChange;
            styleBox.ItemsSource = styles;
            styleBox.SelectedItem = "dark";
            Style buttonStyle = new Style();
            buttonStyle.Setters.Add(
                new Setter
                {
                    Property = Control.FontFamilyProperty,
                    Value = new FontFamily("Verdana")
                });
            buttonStyle.Setters.Add(
                new Setter
                {
                    Property = Control.MarginProperty,
                    Value = new Thickness(10)
                });
            buttonStyle.Setters.Add(
                new Setter
                {
                    Property = Control.BackgroundProperty,
                    Value = new SolidColorBrush(Colors.PowderBlue)
                });
            buttonStyle.Setters.Add(
                new Setter
                {
                    Property = Control.ForegroundProperty,
                    Value = new SolidColorBrush(Colors.Black)
                });

            
        }

        private void ExitButton_Click(object sender, RoutedEventArgs e)
        {
            Application.Current.Shutdown();
        }

        private void NameFilter_TextChanged(object sender, TextChangedEventArgs e)
        {
            filters["Name"] = ((TextBox)sender).Text;
            ApplyFilter();
        }

        private void NationFilter_TextChanged(object sender, TextChangedEventArgs e)
        {
            filters["Nation"] = ((TextBox)sender).Text;
            ApplyFilter();
        }

        private void ApplyFilter()
        {
            var filteredStudents = Globals.dataProvider.GetStudents();

            foreach (var filter in filters)
            {
                filteredStudents = filteredStudents.Where(s => s.GetType().GetProperty(filter.Key).GetValue(s, null).ToString().Contains(filter.Value.ToString()));
            }

            filteredStudents = filteredStudents.Where(s => s.Age >= 20 && s.Course > 2);

            StudentList = new ObservableCollection<Student>(filteredStudents);
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            MessageBoxResult result = MessageBox.Show("Семен Хомяк закончит универ ?", "Вопрос", MessageBoxButton.YesNo);

            if (result == MessageBoxResult.Yes)
            {
            }
            else
            {
            }
        }
        private void Button2_Click(object sender, RoutedEventArgs e)
        {
            MessageBoxResult result = MessageBox.Show("Сколько живет пингвин ?", "Вопрос", MessageBoxButton.YesNo);

            if (result == MessageBoxResult.Yes)
            {
            }
            else
            {
            }
        }
        private void ThemeChange(object sender, SelectionChangedEventArgs e)
        {
            string style = styleBox.SelectedItem as string;
            var uri = new Uri(style + ".xaml", UriKind.Relative);
            ResourceDictionary resourceDict =
                Application.LoadComponent(uri) as ResourceDictionary;
            Application.Current.Resources.Clear();
            Application.Current.Resources.MergedDictionaries.Add(resourceDict);
        }
private void ToggleViewButton_Click(object sender, RoutedEventArgs e)        {
            currentStyle = currentStyle == "StackStyle" ? "WrapStyle" : "StackStyle";
            var newStyle = (Style)TryFindResource(currentStyle);
    if (newStyle != null)
                StudentListBox.Style = newStyle;
        }

    }

    internal interface IDataProvider
    {
        IEnumerable<Student> GetStudents();
    }

    public class LocalDataProvider : IDataProvider
    {
        public IEnumerable<Student> GetStudents()
        {
            return new List<Student>
            {
                new Student { Id = 1, Name = "Хэй Вэнь", Age = 24, Country = "Китай", GPA = 5.0, Speciality = "Программирование", Grant = 25000.0, Course = 4, EnrollmentDate = new DateTime(2020, 9, 1), IsFullTime = true },
                new Student { Id = 2, Name = "Семен Хомяк", Age = 22, Country = "Россия", GPA = 3.7, Speciality = "Инженерия", Grant = 10000.0, Course = 2, EnrollmentDate = new DateTime(2022, 1, 15), IsFullTime = false },
                new Student { Id = 3, Name = "Джейкоб Ли", Age = 19, Country = "Америка", GPA = 4.4, Speciality = "Лингвистика", Grant = 20000.0, Course = 1, EnrollmentDate = new DateTime(2023, 8, 20), IsFullTime = true },
                new Student { Id = 4, Name = "Арамсунторнсук Пирапонг", Age = 18, Country = "Таиланд", GPA = 4.1, Speciality = "Логистика", Grant = 15000.0, Course = 1, EnrollmentDate = new DateTime(2023, 4, 6), IsFullTime = false },
                new Student { Id = 5, Name = "Рипка Дарина", Age = 18, Country = "Украина", GPA = 4.8, Speciality = "Дизайн", Grant = 23000.0, Course = 1, EnrollmentDate = new DateTime(2023, 5, 15), IsFullTime = true },
            };
        }
    }

    public class Student
    {

        public int Id { get; set; }
        public string Name { get; set; }
        public string Speciality { get; set; }
        public string Country { get; set; }
        public double GPA { get; set; }
        public double Grant { get; set; }
        public DateTime EnrollmentDate { get; set; }
        public bool IsFullTime { get; set; }
        public int Age { get; internal set; }
        public int Course { get; internal set; }
    }
}