1、拖拽需要實現的事件包括：

PreviewMouseLeftButtonDown

LBoxSort_OnDrop

具體實現如下：

private void LBoxSort_OnPreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e){var pos = e.GetPosition(LBoxSort);HitTestResult result = VisualTreeHelper.HitTest(LBoxSort, pos);if (result == null){return;}var listBoxItem = Utils.FindVisualParent<ListBoxItem>(result.VisualHit);if (listBoxItem == null || listBoxItem.Content != LBoxSort.SelectedItem){return;}DataObject dataObj = new DataObject(listBoxItem.Content as Person);DragDrop.DoDragDrop(LBoxSort, dataObj, DragDropEffects.Move);}private void LBoxSort_OnDrop(object sender, DragEventArgs e){var pos = e.GetPosition(LBoxSort);var result = VisualTreeHelper.HitTest(LBoxSort, pos);if (result == null){return;}//查找元數據var sourcePerson = e.Data.GetData(typeof (Person)) as Person;if (sourcePerson == null){return;}//查找目標數據var listBoxItem = Utils.FindVisualParent<ListBoxItem>(result.VisualHit);if (listBoxItem == null){return;}var targetPerson = listBoxItem.Content as Person;if (ReferenceEquals(targetPerson, sourcePerson)){return;}_persons.Remove(sourcePerson);_persons.Insert(_persons.IndexOf(targetPerson), sourcePerson);}} 事件實現

2、排序功能實現：
數據源：

private ObservableCollection<Person> _persons = new ObservableCollection<Person>();private void InitData(){_persons.Add(new Person{Name = "test1", Order = "1"});_persons.Add(new Person { Name = "test2", Order = "2" });_persons.Add(new Person { Name = "test3", Order = "3" });_persons.Add(new Person { Name = "test4", Order = "4" });_persons.Add(new Person { Name = "test5", Order = "5" });} 數據源

3、排序功能實現：
為數據集合實現CollectionChanged事件，當數據集合發生變化時執行：

private void PersonsOnCollectionChanged(object sender, NotifyCollectionChangedEventArgs e){if (e.Action == NotifyCollectionChangedAction.Remove){for (int i = e.OldStartingIndex; i < _persons.Count; i++){_persons[i].Order = i.ToString();}}else if (e.Action == NotifyCollectionChangedAction.Add){for (int i = e.NewStartingIndex; i < _persons.Count; i++){_persons[i].Order = i.ToString();}}} 排序

4、相關代碼附加：

public class Person : INotifyPropertyChanged{public string Name { get; set; }private string _order;public string Order{get { return _order; }set { _order = value; OnPropertyChanged("Order"); }}public event PropertyChangedEventHandler PropertyChanged;[NotifyPropertyChangedInvocator]protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null){PropertyChangedEventHandler handler = PropertyChanged;if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));}}internal static class Utils{//根據子元素查找父元素public static T FindVisualParent<T>(DependencyObject obj) where T : class{while (obj != null){if (obj is T)return obj as T;obj = VisualTreeHelper.GetParent(obj);}return null;}} 相關代碼

?5、代碼下載地址：

http://download.csdn.net/detail/w_wanglei/6375371

總結

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