Set / Clear and restore control event handlers

[Lloyd Sheen]

Is there a way to get the event handlers such that I can cache the info
about handlers for a particular control, remove the handlers, do some code
and restore the cached event handlers in VB.NET (2008).

I would rather do things this way than having to have a boolean flag to
indicated to the handler to exit right away.

Psuedo code:

CacheHandlers(c ontrol)

code which would cause the control to fire an event.

RestoreHandlers (control).

LS

[Stephany Young]

RemoveHandler ....
...

code which would cause the control to fire an event.

AddHandler ....
...
"Lloyd Sheen" <[e-mail] in message
news:%2******** ********@TK2MSF TNGP02.phx.gbl. ..

Is there a way to get the event handlers such that I can cache the info
about handlers for a particular control, remove the handlers, do some code
and restore the cached event handlers in VB.NET (2008).

I would rather do things this way than having to have a boolean flag to
indicated to the handler to exit right away.

Psuedo code:

CacheHandlers(c ontrol)

code which would cause the control to fire an event.

RestoreHandlers (control).

LS

[Lloyd Sheen]

"Stephany Young" <noone@localhos twrote in message
news:Oh******** ******@TK2MSFTN GP04.phx.gbl...

RemoveHandler ....
...

code which would cause the control to fire an event.

AddHandler ....
...
"Lloyd Sheen" <[e-mail] in message
news:%2******** ********@TK2MSF TNGP02.phx.gbl. ..

>Is there a way to get the event handlers such that I can cache the info
about handlers for a particular control, remove the handlers, do some
code and restore the cached event handlers in VB.NET (2008).

I would rather do things this way than having to have a boolean flag to
indicated to the handler to exit right away.

Psuedo code:

CacheHandlers( control)

code which would cause the control to fire an event.

RestoreHandler s(control).

LS

Yes I know about the "norm" but what I am looking at doing is for a control
(any control) to have a way of removing and then after some code restoring
the event handlers. I am looking for a general method which would take into
account that I would not know what to use for Addhandler and RemoveHandler
so I am looking for a method to enumerate the "added" handlers and then
cache the info, do a remove and when asked reset using AddHandler.

LS

[Cor Ligthert[MVP]]

Lloyd,

You will need reflection for what you want, however in my idea are you going
in the wrong direction.

Cor

"Lloyd Sheen" <[e-mail] in bericht
news:%2******** ********@TK2MSF TNGP05.phx.gbl. ..

>
"Stephany Young" <noone@localhos twrote in message
news:Oh******** ******@TK2MSFTN GP04.phx.gbl...

> RemoveHandler ....
...

code which would cause the control to fire an event.

AddHandler ....
...
"Lloyd Sheen" <[e-mail] in message
news:%2******* *********@TK2MS FTNGP02.phx.gbl ...

>>Is there a way to get the event handlers such that I can cache the info
about handlers for a particular control, remove the handlers, do some
code and restore the cached event handlers in VB.NET (2008).

I would rather do things this way than having to have a boolean flag to
indicated to the handler to exit right away.

Psuedo code:

CacheHandlers (control)

code which would cause the control to fire an event.

RestoreHandle rs(control).

LS

Yes I know about the "norm" but what I am looking at doing is for a
control (any control) to have a way of removing and then after some code
restoring the event handlers. I am looking for a general method which
would take into account that I would not know what to use for Addhandler
and RemoveHandler so I am looking for a method to enumerate the "added"
handlers and then cache the info, do a remove and when asked reset using
AddHandler.

LS

[Michel Posseth [MCP]]

Seems pretty easy if this is what you are looking for :-)
http://msdn.microsoft.com/en-us/libr...ationlist.aspx
MyEventEvent.Ge tInvocationList ()
HTH

Michel Posseth


"Lloyd Sheen" <[e-mail] in bericht
news:%2******** ********@TK2MSF TNGP02.phx.gbl. ..

Is there a way to get the event handlers such that I can cache the info
about handlers for a particular control, remove the handlers, do some code
and restore the cached event handlers in VB.NET (2008).

I would rather do things this way than having to have a boolean flag to
indicated to the handler to exit right away.

Psuedo code:

CacheHandlers(c ontrol)

code which would cause the control to fire an event.

RestoreHandlers (control).

LS

[Lloyd Sheen]

"Michel Posseth [MCP]" <MS**@posseth.c omwrote in message
news:Oz******** ******@TK2MSFTN GP03.phx.gbl...

Seems pretty easy if this is what you are looking for :-)
http://msdn.microsoft.com/en-us/libr...ationlist.aspx
MyEventEvent.Ge tInvocationList ()
HTH

Michel Posseth


"Lloyd Sheen" <[e-mail] in bericht
news:%2******** ********@TK2MSF TNGP02.phx.gbl. ..

>Is there a way to get the event handlers such that I can cache the info
about handlers for a particular control, remove the handlers, do some
code and restore the cached event handlers in VB.NET (2008).

I would rather do things this way than having to have a boolean flag to
indicated to the handler to exit right away.

Psuedo code:

CacheHandlers( control)

code which would cause the control to fire an event.

RestoreHandler s(control).

LS

Thanks but I would like to go from the other direction. I would like to get
a list of the eventhandlers (not eventinfo) for a control which would allow
me to remove the handlers from certain events and add them after I execute
some code. Is that at all possible?

I notice that Control thru the base class Component has a Events property.
This unfortunately is protected so I cannot get the list from here. I want
to start a control not at delegate since I might not know the delegate(s).

Thanks
LS