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@@ -1,110 +1,6 @@
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# Поиск, сортировка ("Университет")
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## Поиск
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```
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-using System;
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-using System.Collections.Generic;
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-using System.Linq;
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-using System.Windows;
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-using System.Windows.Controls;
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-using System.Windows.Input;
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-
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-namespace University
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-{
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- public partial class MainWindow : Window
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- {
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- private List<Student> students;
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- private Dictionary<string, Func<Student, bool>> filters;
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- private AgeRange selectedAge = new AgeRange { ageFrom = 19, ageTo = 23 };
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- private string searchFilter = "";
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-
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- public MainWindow()
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- {
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- InitializeComponent();
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- SearchFilterTextBox.KeyUp += SearchFilter_KeyUp;
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- InitializeData();
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-
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- // Отображаем всех студентов в listview
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- UpdateStudentList(students);
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- }
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-
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- private void InitializeData()
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- {
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- // Создаем список студентов
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- students = new List<Student>
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- {
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- new Student { Name = "Хэй Вэнь", Course = 3, Nationality = "Китаец", Age = 22 },
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- new Student { Name = "Эдвард Каллен", Course = 1, Nationality = "Американец", Age = 20 },
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- new Student { Name = "Джейк Ли", Course = 1, Nationality = "Китаец", Age = 19 },
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- new Student { Name = "Семен Хомяк", Course = 4, Nationality = "Русский", Age = 23 },
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- new Student { Name = "Эндрю Уилсон", Course = 3, Nationality = "Американец", Age = 21 },
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- new Student { Name = "Ариадна Санчес", Course = 2, Nationality = "Испанец", Age = 20 }
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- };
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-
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- // Создаем словарь фильтров
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- filters = new Dictionary<string, Func<Student, bool>>
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- {
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- { "Все", s => true },
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- { "Первый курс", s => s.Course == 1 },
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- { "Второй курс", s => s.Course == 2 },
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- { "Третий курс", s => s.Course == 3 },
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- { "Четвертый курс", s => s.Course == 4 },
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- { "Русские", s => s.Nationality == "Русский" },
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- { "Китайцы", s => s.Nationality == "Китаец" },
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- { "Американцы", s => s.Nationality == "Американец" },
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- { "Испанцы", s => s.Nationality == "Испанец" },
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- { "Возраст 19-20", s => s.Age >= 19 && s.Age <= 20 },
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-
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- { "Возраст 21-23", s => s.Age >= 21 && s.Age <= 23 }
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- };
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- }
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-
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- private IEnumerable<Student> FilteredStudentList
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- {
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- get
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- {
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- // сохраняем во временную переменную полный список
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- var res = students;
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-
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- // фильтруем по возрасту
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- res = (List<Student>)res.Where(s => (s.Age >= selectedAge.ageFrom && s.Age < selectedAge.ageTo));
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-
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- // если фильтр не пустой, то ищем ВХОЖДЕНИЕ подстроки поиска в имени без учета регистра
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- if (searchFilter != "")
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- res = (List<Student>)res.Where(s => s.Name.IndexOf(searchFilter, StringComparison.OrdinalIgnoreCase) >= 0);
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-
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- return res;
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- }
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- }
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-
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- private void UpdateStudentList(List<Student> studentsToDisplay)
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- {
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- StudentListView.ItemsSource = studentsToDisplay;
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- }
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-
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- private void SearchFilter_KeyUp(object sender, KeyEventArgs e)
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- {
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- searchFilter = SearchFilterTextBox.Text;
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- UpdateStudentList(FilteredStudentList.ToList());
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- }
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- }
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-
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- public class Student
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- {
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- public string Name { get; set; }
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- public int Course { get; set; }
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- public string Nationality { get; set; }
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- public int Age { get; set; }
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- }
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-
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- public class AgeRange
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- {
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- public int ageFrom { get; set; }
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- public int ageTo { get; set; }
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- }
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-}
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-
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-```
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-```
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<Window x:Class="University.MainWindow"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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@@ -113,50 +9,67 @@ namespace University
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xmlns:local="clr-namespace:University"
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mc:Ignorable="d"
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Title="University" Height="450" Width="800">
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- <Grid>
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- <Grid.RowDefinitions>
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- <RowDefinition Height="Auto" />
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- <RowDefinition Height="*" />
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- </Grid.RowDefinitions>
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+ <Grid>
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+ <Grid.RowDefinitions>
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+ <RowDefinition Height="Auto" />
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+ <RowDefinition Height="*" />
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+ </Grid.RowDefinitions>
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+
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+ <StackPanel Orientation="Horizontal" Margin="10">
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- <StackPanel Orientation="Horizontal" Margin="10">
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<Label
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- Content="искать"
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- VerticalAlignment="Center"/>
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+Content="искать"
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+VerticalAlignment="Center"/>
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<TextBox
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- Width="200"
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- VerticalAlignment="Center"
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- x:Name="SearchFilterTextBox"
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- KeyUp="SearchFilter_KeyUp"/>
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+Width="200"
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+VerticalAlignment="Center"
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+x:Name="SearchFilterTextBox"
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+KeyUp="SearchFilter_KeyUp"/>
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+ <Label
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+ Content="Возраст:"
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+ VerticalAlignment="Center"/>
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+ <RadioButton
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+ GroupName="Age"
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+ Tag="1"
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+ Content="по возрастанию"
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+ IsChecked="True"
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+ Checked="RadioButton_Checked"
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+ VerticalAlignment="Center"/>
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+ <RadioButton
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+ GroupName="Age"
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+ Tag="2"
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+ Content="по убыванию"
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+ Checked="RadioButton_Checked"
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+ VerticalAlignment="Center"/>
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</StackPanel>
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- <ListView x:Name="StudentListView" Grid.Row="1" Margin="10">
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- <ListView.View>
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- <GridView>
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- <GridViewColumn Header="Имя" DisplayMemberBinding="{Binding Name}" />
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- <GridViewColumn Header="Курс" DisplayMemberBinding="{Binding Course}" />
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- <GridViewColumn Header="Национальность" DisplayMemberBinding="{Binding Nationality}" />
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- <GridViewColumn Header="Возраст" DisplayMemberBinding="{Binding Age}" />
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- </GridView>
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- </ListView.View>
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- </ListView>
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- </Grid>
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+ <ListView x:Name="StudentListView" Grid.Row="1" Margin="10">
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+ <ListView.View>
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+ <GridView>
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+ <GridViewColumn Header="Имя" DisplayMemberBinding="{Binding Name}" />
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+ <GridViewColumn Header="Курс" DisplayMemberBinding="{Binding Course}" />
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+ <GridViewColumn Header="Национальность" DisplayMemberBinding="{Binding Nationality}" />
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+ <GridViewColumn Header="Возраст" DisplayMemberBinding="{Binding Age}" />
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+ </GridView>
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+ </ListView.View>
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+ </ListView>
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+ </Grid>
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</Window>
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```
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-
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-## Сортировка
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```
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Windows;
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using System.Windows.Controls;
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+using System.Windows.Input;
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namespace University
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{
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public partial class MainWindow : Window
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{
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private List<Student> students;
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+ private string searchFilter = "";
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private bool sortAsc = true;
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public MainWindow()
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@@ -169,18 +82,28 @@ namespace University
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// Отображаем всех студентов в listview
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UpdateStudentList(students);
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}
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+ private void SearchFilter_KeyUp(object sender, KeyEventArgs e)
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+ {
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+ searchFilter = SearchFilterTextBox.Text;
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+ Invalidate();
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+ }
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+
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+ private void Invalidate()
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+ {
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+ throw new NotImplementedException();
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+ }
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private void InitializeData()
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{
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// Создаем список студентов
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students = new List<Student>
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{
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- new Student { Name = "Хэй Вэнь", Course = 3, Nationality = "Китаец", Age = 22 },
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- new Student { Name = "Эдвард Каллен", Course = 1, Nationality = "Американец", Age = 19 },
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new Student { Name = "Джейк Ли", Course = 1, Nationality = "Китаец", Age = 19 },
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+ new Student { Name = "Ариадна Санчес", Course = 2, Nationality = "Испанец", Age = 20 },
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+ new Student { Name = "Эдвард Каллен", Course = 1, Nationality = "Американец", Age = 20 },
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+ new Student { Name = "Эндрю Уилсон", Course = 3, Nationality = "Американец", Age = 21 },
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+ new Student { Name = "Хэй Вэнь", Course = 3, Nationality = "Китаец", Age = 22 },
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new Student { Name = "Семен Хомяк", Course = 4, Nationality = "Русский", Age = 23 },
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- new Student { Name = "Эндрю Уилсон", Course = 2, Nationality = "Американец", Age = 21 },
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- new Student { Name = "Мария Гонсалес", Course = 3, Nationality = "Испанец", Age = 20 }
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};
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}
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@@ -188,7 +111,7 @@ namespace University
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{
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List<Student> filteredStudents = new List<Student>();
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-
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+ // Фильтруем список студентов по выбранному критерию
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UpdateStudentList(filteredStudents);
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}
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@@ -204,6 +127,21 @@ namespace University
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InvalidateVisual(); // Исправлено имя метода
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}
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+ private void SortByAgeButton_Click(object sender, RoutedEventArgs e)
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+ {
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+ // Сортируем список студентов по возрасту
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+ List<Student> sortedStudents = students.OrderBy(student => student.Age).ToList();
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+
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+ // Если нужно отсортировать по убыванию, разворачиваем список
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+ if (!sortAsc)
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+ {
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+ sortedStudents.Reverse();
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+ }
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+
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+ // Обновляем список студентов в ListView
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+ UpdateStudentList(sortedStudents);
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+ }
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+
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private IEnumerable<Student> FilteredStudentList
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{
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get
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@@ -225,51 +163,4 @@ namespace University
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}
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}
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```
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-```
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-<Window x:Class="University.MainWindow"
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- xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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- xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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- xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
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- xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
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- xmlns:local="clr-namespace:University"
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- mc:Ignorable="d"
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- Title="University" Height="450" Width="800">
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- <Grid>
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- <Grid.RowDefinitions>
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- <RowDefinition Height="Auto" />
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- <RowDefinition Height="*" />
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- </Grid.RowDefinitions>
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-
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- <StackPanel Orientation="Horizontal" Margin="10">
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- <Label
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- Content="Возраст:"
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- VerticalAlignment="Center"/>
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- <RadioButton
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- GroupName="Age"
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- Tag="1"
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- Content="по возрастанию"
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- IsChecked="True"
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- Checked="RadioButton_Checked"
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- VerticalAlignment="Center"/>
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- <RadioButton
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- GroupName="Age"
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- Tag="2"
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- Content="по убыванию"
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- Checked="RadioButton_Checked"
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- VerticalAlignment="Center"/>
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- </StackPanel>
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-
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- <ListView x:Name="StudentListView" Grid.Row="1" Margin="10">
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- <ListView.View>
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- <GridView>
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- <GridViewColumn Header="Имя" DisplayMemberBinding="{Binding Name}" />
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- <GridViewColumn Header="Курс" DisplayMemberBinding="{Binding Course}" />
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- <GridViewColumn Header="Национальность" DisplayMemberBinding="{Binding Nationality}" />
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- <GridViewColumn Header="Возраст" DisplayMemberBinding="{Binding Age}" />
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- </GridView>
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- </ListView.View>
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- </ListView>
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- </Grid>
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-</Window>
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-```
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-
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+
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