How to deregister an event handler of another object for another object?

Posted by rism on Stack Overflow See other posts from Stack Overflow or by rism
Published on 2010-04-09T05:20:02Z Indexed on 2010/04/09 5:23 UTC
Read the original article Hit count: 309

Filed under:

c#

|

event-handling

I have 3 objects. Object A has an event X that other objects can subscribe to. Object B registers for Object A's X event.

How do I deregister Object B from Object A's X event from within Object C?

© Stack Overflow or respective owner

Related posts about c#

.NET WebRequest.PreAuthenticate not quite what it sounds like

as seen on West-Wind - Search for 'West-Wind'
I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:… >>> More
HttpWebRequest and Ignoring SSL Certificate Errors

as seen on West-Wind - Search for 'West-Wind'
Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to… >>> More
Dynamic Type to do away with Reflection

as seen on West-Wind - Search for 'West-Wind'
The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions… >>> More
The dynamic Type in C# Simplifies COM Member Access from Visual FoxPro

as seen on West-Wind - Search for 'West-Wind'
I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot… >>> More
Finding a Relative Path in .NET

as seen on West-Wind - Search for 'West-Wind'
Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test… >>> More

Related posts about event-handling

Delphi and prevent event handling

as seen on Stack Overflow - Search for 'Stack Overflow'
How do you prevent a new event handling to start when an event handling is already running? I press a button1 and event handler start e.g. slow printing job. There are several controls in form buttons, edits, combos and I want that a new event allowed only after running handler is finnished. … >>> More
ASP.NET - Page Postbacks and event handling

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, Can anyone suggest me good reading materials on the internals of how ASP.NET handles page postback and events? -Justin Samuel. >>> More
Webforms MVP Passive View - event handling

as seen on Stack Overflow - Search for 'Stack Overflow'
Should the view have nothing event specific in its interface and call the presenter plain methods to handle events and not have any official EventHandlers? For instance // ASPX protected void OnSaveButtonClicked(object sender, EventArgs e) { _Presenter.OnSave(); } Or should the view have event… >>> More
.NET coded event handling vs event handling in IDE (RAD) ?

as seen on Stack Overflow - Search for 'Stack Overflow'
Which method is better and why, when? In terms of scalability,performance etc which one is better? From my point of view coding by hand is better and more natural. what do you guys think? >>> More
Key event handling process

as seen on Stack Overflow - Search for 'Stack Overflow'
I'd like to know how the key event is handled in Android platform. From 'when user type key 'a' on software keyboard', To 'view draw the character 'a' on itself'. Probably, the key event is generated by IME, And it will be sent to parent view, Finally, view(such as EditText) displays chracters. Please… >>> More