wp7自定义及传递EventHandler参数

a.定义参数类类，继承自基类EventArgs

usingSystem;

usingSystem.Net;

usingSystem.Windows;

usingSystem.Windows.Controls;

usingSystem.Windows.Documents;

usingSystem.Windows.Ink;

usingSystem.Windows.Input;

usingSystem.Windows.Media;

usingSystem.Windows.Media.Animation;

usingSystem.Windows.Shapes;

namespaceCalendar.Controls

{

publicclassAlmanacSelectionChangedEventArgs:EventArgs

{

privateAlmanacSelectionChangedEventArgs() { }

//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

internalAlmanacSelectionChangedEventArgs(AlmanacInfoselectedAlmanac)

{

SelectedAlmanac = selectedAlmanac;

}

publicAlmanacInfoSelectedAlmanac {get;privateset; }

}

}

b.定义委托事件， 装载参数：

publiceventEventHandler<AlmanacSelectionChangedEventArgs> SelectionChanged;

privatevoidOnDoneButtonClick(objectsender,EventArgsargs)

{

SelectionChanged(sender,newAlmanacSelectionChangedEventArgs(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：

privatevoidOnNavigated(objectsender,NavigationEventArgse)

{

AlmanacPickerPagealmanacPage = e.ContentasAlmanacPickerPage;

if(null!= almanacPage)

{

almanacPage.SelectedItem = m_AlmanacSelected;

almanacPage.SelectionChanged += OnSelectionChanged;

}

}

privatevoidOnSelectionChanged(objectsender,AlmanacSelectionChangedEventArgse)

{

m_AlmanacSelected = e.SelectedAlmanac;

}