[ wpf ] Listview Filter

1. ObservableCollecton 에서 View 생성

2.  생성된 view에 filter 적용

3. 조건 변경시 View refresh 

완전히 일치하는 데이터만 보이게 필터링함 , 띄어쓰기 기준으로 다른 여러 데이터 필터링 

xaml 

<Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="2*"/>
            <ColumnDefinition Width="2*"/>
            <ColumnDefinition Width="0.5*"/>
            <ColumnDefinition Width="3*"/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
            <RowDefinition Height="3*"/>
            <RowDefinition Height="3*"/>
        </Grid.RowDefinitions>
        <TextBlock Grid.Row="0" Text="Name :" FontSize="15" HorizontalAlignment="Center" VerticalAlignment="Center"/>
        <TextBox Grid.Row="0" Grid.Column="1" Margin="5" Text="{Binding Filter , UpdateSourceTrigger=PropertyChanged}"/>
        <ListView Grid.Row="1" Grid.ColumnSpan="3" Grid.RowSpan="2" Margin="5" Name="sListView" ItemsSource="{Binding Collection}" >
            <ListView.View>
                <GridView>
                    <GridView.Columns>
                        <GridViewColumn DisplayMemberBinding="{Binding name}" Header="name" Width="50"/>
                        <GridViewColumn DisplayMemberBinding="{Binding age}" Header="age" Width="50"/>
                        <GridViewColumn DisplayMemberBinding="{Binding java}" Header="java" Width="50"/>
                        <GridViewColumn DisplayMemberBinding="{Binding csharp}" Header="csharp" Width="50"/>
                        <GridViewColumn DisplayMemberBinding="{Binding python}" Header="python" Width="50"/>
                    </GridView.Columns>
                </GridView>
            </ListView.View>
        </ListView>
    </Grid>

c# 

public class MainViewModel
    {
        List<Student> students = null;

        public MainViewModel()
        {
            student = new ObservableCollection<Student>();
            ShowListView();
            CollectionViewSource = new CollectionViewSource();
            CollectionViewSource.Source = this.student;
            CollectionViewSource.Filter += TextFilter;
        }
        private string _filter = string.Empty;
        public string Filter
        {
            get
            {
                return _filter;
            }
            set
            {
                _filter = value;
                OnFilterChanged();
            }
        }
        public void TextFilter(object sender, FilterEventArgs e)
        {
            Student students = (Student)e.Item;
            if (string.IsNullOrWhiteSpace(this.Filter) || this.Filter.Length == 0)
                e.Accepted = true;
            else
            {
                if (Filter.Contains(' '))
                {
                    string[] InputIPs = Filter.Split(' ');

                    e.Accepted = Array.IndexOf(InputIPs, students.name) >= 0;
                }
                else
                {
                    e.Accepted = students.name.Equals(Filter);
                }
            }
        }
        public void ShowListView()
        {
            student.Add(new Student() { name = "jin", csharp = 100, java = 60, python = 70, age = 20 });
            student.Add(new Student() { name = "sin", csharp = 40, java = 30, python = 70, age = 20 });
            student.Add(new Student() { name = "young", csharp = 30, java = 80, python = 65, age = 20 });
            student.Add(new Student() { name = "kim", csharp = 50, java = 70, python = 70, age = 20 });
            student.Add(new Student() { name = "song", csharp = 75, java = 60, python = 100, age = 20 });
        }
        private ObservableCollection<Student> student { get; set; }
        public CollectionViewSource CollectionViewSource { get; set; }
        public ICollectionView Collection
        {
            get
            {
                return CollectionViewSource.View;
            }
        }
        public void OnFilterChanged()
        {
            CollectionViewSource.View.Refresh();
        }
    }

public class Student
    {
        public string name { get; set; }
        public int java { get; set; }

        public int csharp { get; set; }
        public int python { get; set; }
        public int age { get; set; }
    }