`
duoerbasilu
  • 浏览: 1474462 次
文章分类
社区版块
存档分类
最新评论

wp7自定义及传递EventHandler参数

 
阅读更多
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;
}
分享到:
评论

相关推荐

Global site tag (gtag.js) - Google Analytics