Sending custom events between page controls

[John Wallace]

Hi,

I have a webform with two entirely different kinds of user control,
called for example "source" and "target". Is it possible for one
"source" to raise events to which one or more "target" controls will
respond (if any "target" controls exists on the page)?

Basically I want "source" to shout out messages that any listening
"target" controls on the page will respond to.

The event docs I've looked at focus on "bubbling" and the event
hierarchy, etc. "Source" and "target" are not composited or really
related in any way (other than the events) so my scenario is more like
"control cooperation" than "hierarchy".

Thanks,
John

 

[Teemu Keiski]

Yes it is. The important is just that "target" control can wire an event
handler for "source"'s event and that means it needs to access the "source"
user control instance somehow. You could for example in Page_Load in the
"target" use Page.FindControls to locate the "source" control and then wire
the event handler.

--
Teemu Keiski
MCP,Designer/Developer
Mansoft tietotekniikka Oy
http://www.mansoft.fi

AspInsiders Member, www.aspinsiders.com
ASP.NET Forums Moderator, www.asp.net
AspAlliance Columnist, www.aspalliance.com