[英]How to raise an event when another event is raised?
I have an application that handles the OnQuit event of another running application. 我有一个应用程序来处理另一个正在运行的应用程序的OnQuit事件。 I would like to raise an additional (custom) event when the OnQuit event is handled.
我想在处理OnQuit事件时引发一个额外的(自定义)事件。 How could I implement such an event?
我怎么能实现这样的活动?
My OnQuit handler is like so: 我的OnQuit处理程序是这样的:
private void StkQuit()
{
_stkApplicationUi.OnQuit -= StkQuit;
Marshal.FinalReleaseComObject(_stkApplicationUi);
Application.Exit();
}
The reason I require the additional event is so that I can tell my View layer that the application has exited. 我需要附加事件的原因是我可以告诉我的View层应用程序已退出。 If this is not the correct way, what would be better?
如果这不是正确的方法,那会更好吗?
WulfgarPro WulfgarPro
I will usually have an event in my view interface like so: 我通常会在我的视图界面中有一个事件,如下所示:
public interface ITestView
{
event EventHandler OnSomeEvent;
}
Then from a presenter constructor I'll wire up those events: 然后从演示者构造函数中我将连接这些事件:
public class TestPresenter : Presenter
{
ITestView _view;
public TestPresenter(ITestView view)
{
_view.OnSomeEvent += new EventHandler(_view_OnSomeEvent);
}
void _view_OnSomeEvent(object sender, EventArgs e)
{
//code that will run when your StkQuit method is executed
}
}
And from your aspx codebehind: 从你的aspx代码隐藏:
public partial class Test: ITestView
{
public event EventHandler OnSomeEvent;
public event EventHandler OnAnotherEvent;
private void StkQuit()
{
_stkApplicationUi.OnQuit -= StkQuit;
Marshal.FinalReleaseComObject(_stkApplicationUi);
if (this.OnSomeEvent != null)
{
this.OnSomeEvent(this, EventArgs.Empty);
}
Application.Exit();
}
}
Hope that helps!! 希望有所帮助!!
Just register this additional event with the _stkApplication after OnQuit has been registered. 在OnQuit注册后,只需使用_stkApplication注册此附加事件。
_stkApplicationUi.OnQuit += StkQuit;
_stkApplicationUi.OnQuitAdditional += AddlQuitHandler;
where AddlQuitHandler is the handler for the custom event 其中AddlQuitHandler是自定义事件的处理程序
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