WPF 精修篇 DataGrid 数据源排序

原文:WPF 精修篇 DataGrid 数据源排序

效果

        <DataGrid x:Name="datagrid" ItemsSource="{Binding ElementName=Mwindow, Path=Preson}" Margin="0,0,0,20">





            <DataGrid.Columns>





            <DataGridTextColumn Binding="{Binding Name}" Header="Name"></DataGridTextColumn>





            <DataGridTextColumn Binding="{Binding Address}" Header="Address"></DataGridTextColumn>





            <DataGridTextColumn Binding="{Binding Age}" Header="Age"></DataGridTextColumn>





            </DataGrid.Columns>





        </DataGrid>





        <CheckBox x:Name="sort" Content="排序" HorizontalAlignment="Left" Margin="466,300,0,0" VerticalAlignment="Top" Checked="CheckBox_Checked"/>

    public partial class MainWindow : Window





    {





        public MainWindow()





        {





            InitializeComponent();





            





                Preson = new ObservableCollection<Preson>() { 





                new Preson() { Name = "慧哥1", Address = "大连1", Age = 31 },





                new Preson() { Name = "慧哥2", Address = "大连2", Age = 32 },





                new Preson() { Name = "慧哥3", Address = "大连3", Age = 33 },





                new Preson() { Name = "慧哥4", Address = "大连4", Age = 34 },





                new Preson() { Name = "慧哥5", Address = "大连5", Age = 35 },





                new Preson() { Name = "123", Address = "大连6", Age = 12 },





                new Preson() { Name = "444", Address = "大连7", Age = 14 },





                new Preson() { Name = "222", Address = "大连8", Age = 33 },





                new Preson() { Name = "1312", Address = "大连9", Age = 22 }





            };





        





 





          





        }





 





 





 





        public ObservableCollection<Preson> Preson





        {





            get { return (ObservableCollection<Preson>)GetValue(PresonProperty); }





            set { SetValue(PresonProperty, value); }





        }





 





        // Using a DependencyProperty as the backing store for Preson.  This enables animation, styling, binding, etc...





        public static readonly DependencyProperty PresonProperty =





            DependencyProperty.Register("Preson", typeof(ObservableCollection<Preson>), typeof(MainWindow), new PropertyMetadata(null));





 





        private void CheckBox_Checked(object sender, RoutedEventArgs e)





        {





            var cvs = CollectionViewSource.GetDefaultView(datagrid.ItemsSource);





            if(cvs!=null&&cvs.CanSort)





            {





                cvs.SortDescriptions.Clear();





                if (sort.IsChecked == true)





                {





                    cvs.SortDescriptions.Add(new System.ComponentModel.SortDescription("Age", System.ComponentModel.ListSortDirection.Descending));





                }





              





            }





        }





 





        





 





 





 





        





    }

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