WPF C# Tutorial

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="ListViewSort.Window1"    
    xmlns:s="clr-namespace:System.Collections;assembly=mscorlib"
    xmlns:p="clr-namespace:System;assembly=mscorlib">
  
    
      
        
                   StrokeThickness = "1"            
           Fill            = "gray"
           Data            = "M 5,10 L 15,10 L 10,5 L 5,10"/>
     

    
    
      
        
                      StrokeThickness = "1"            
              Fill            = "gray"
              Data            = "M 5,5 L 10,10 L 15,5 L 5,5"/>
      

    
  

  
  
    
      
        
                                    Header="Year"
                          Width="100"/>
        

      

      
        
          2003/1/1 12:22:02
          2003/1/2 13:2:01
          2007/1/3 2:1:6
          2007/1/4 13:6:55
          2009/2/1 12:22:02
          2008/2/2 13:2:01
          2000/2/3 2:1:6
          2002/2/4 13:6:55
          2001/3/1 12:22:02
          2006/3/2 13:2:01
          2004/3/3 2:1:6
          2004/3/4 13:6:55
        

      

    
  


//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Collections;
using System.Windows.Controls.Primitives;
using System.ComponentModel;
using System.Windows.Data;
namespace ListViewSort
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }
        GridViewColumnHeader _lastHeaderClicked = null;
        ListSortDirection _lastDirection = ListSortDirection.Ascending;
        void GridViewColumnHeaderClickedHandler(object sender,RoutedEventArgs e)
        {
            GridViewColumnHeader headerClicked = e.OriginalSource as GridViewColumnHeader;
            ListSortDirection direction;
            if (headerClicked == null){
               return;
            }
            if (headerClicked.Role != GridViewColumnHeaderRole.Padding){
               return;
            }
            if (headerClicked != _lastHeaderClicked){
               direction = ListSortDirection.Ascending;
            }else{
               if (_lastDirection == ListSortDirection.Ascending){
                  direction = ListSortDirection.Descending;
               }else{
                  direction = ListSortDirection.Ascending;
               }
            }
            string header = headerClicked.Column.Header as string;
            Sort(header, direction);
            if (direction == ListSortDirection.Ascending)
            {
               headerClicked.Column.HeaderTemplate = Resources["HeaderTemplateArrowUp"] as DataTemplate;
            }else{
               headerClicked.Column.HeaderTemplate = Resources["HeaderTemplateArrowDown"] as DataTemplate;
            }
            if (_lastHeaderClicked != null && _lastHeaderClicked != headerClicked)
            {
               _lastHeaderClicked.Column.HeaderTemplate = null;
            }
            _lastHeaderClicked = headerClicked;
            _lastDirection = direction;
            
        }
        private void Sort(string sortBy, ListSortDirection direction)
        {
            ICollectionView dataView = CollectionViewSource.GetDefaultView(lv.ItemsSource);
            dataView.SortDescriptions.Clear();
            SortDescription sd = new SortDescription(sortBy, direction);
            dataView.SortDescriptions.Add(sd);
            dataView.Refresh();
        }
    }
}