wp7自定义及传递EventHandler参数
a.定义参数类类，继承自基类EventArgs
using System;using System.Net;using System.Windows;using System.Windows.Controls;using System.Windows.Documents;using System.Windows.Ink;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Animation;using System.Windows.Shapes;
namespace Calendar.Controls{ public class AlmanacSelectionChangedEventArgs : EventArgs { private AlmanacSelectionChangedEventArgs() { } //AlmanacInfo是一个封装了某些数据的结构体，它的对象就是索要传递的数据 internal AlmanacSelectionChangedEventArgs(AlmanacInfo selectedAlmanac) { SelectedAlmanac = selectedAlmanac; }
public AlmanacInfo SelectedAlmanac { get; private set ; } }}
b.定义委托事件， 装载参数： public event EventHandler<AlmanacSelectionChangedEventArgs> SelectionChanged;
private void OnDoneButtonClick(object sender, EventArgs args) { SelectionChanged(sender, new AlmanacSelectionChangedEventArgs (m_SelectedItem)); }
c.注册事件响应，在时间触发时通过EventHandler参数传递AlmanacInfo数据：
private void OnNavigated( object sender, NavigationEventArgs e) { AlmanacPickerPage almanacPage = e.Content as AlmanacPickerPage; if (null != almanacPage) { almanacPage.SelectedItem = m_AlmanacSelected; almanacPage.SelectionChanged += OnSelectionChanged; } }
private void OnSelectionChanged(object sender, AlmanacSelectionChangedEventArgs e) { m_AlmanacSelected = e.SelectedAlmanac; }
