Hi all,
I am having very strange problem. I am using delgate to call one of the method in the class. The problem is eveytime the event occurs it increasing the call value by one. For example when first time the event occurs it calls the method once, than second time twice and so on. I checked my code to find if there are any multiple copies of the same object lying around and didn't find any. Here is the code i am using.
site.SocketChanged +=
new AC.Site.SocketEventHandler(site_SocketChanged); // where site is the object of type Sitevoid
site_SocketChanged(AC.Site site){
object[] param = new object[] { site };AC.
SafeInvokeHelper.Invoke(this, "UpdateSite", param); }in the class Site I have following code.
public delegate void SocketEventHandler(Site site); public virtual event SocketEventHandler SocketChanged;
//when event occurs
this.SocketChanged.Invoke(this);I don't think there is anything wrong with the code. When I debug i can see that it actually calls site_SocketChanged more than once. Any suggestions are appreciated. Thanks in advance
Rushi
Delegates Problem - calling method more time then expected
gift
Thanks to both of you for replying and solving my problem. I was actually attching multiple events to the site object by executing "site.SocketChanged += new SocketEventHandler (... )" more than once. I think it's been sorted now. Thanks a lot
Rushi
Gary Cabana
In some way the line
site.SocketChanged += new AC.Site.SocketEventHandler(site_SocketChanged); // where site is the object of type Site
must be executed multiple times in your code. You can set a breakpoint to verfiy this.
This code actually adds a listener to the event's listener collection, which is enumerated when firing the event. If someone has registered more than once, the event will be delivered more than once (as you can expect).
Secrets
site.SocketChanged += new SocketEventHandler (... )
You can attach multiple event-handlers to an event (multi-cast events). So, if that line of code is executed twice, your event will have 2 event-handlers (2 times the same method).
If you execute that line another time, you'll have 3 event-handlers, so, that method will be executed 3 times, etc....