Re: Programaticly call a method from a different object?

You completely missed the point, I'm afraid.

In most cases, reflection is not necessary. A better design removes the
need for the crutch. That's not to say that reflection is somehow bad, but
when used as an alternative to simple, easily described patterns that use
interfaces, declare intent, and are managed by the developer, and not 'self
modifying code', reflection can open the door to a wide array of design
issues that can make maintenance expensive.

I'm not criticizing the code. I'm expressing reservations about the need to
use it.

If a gentleman comes to my door with his arms full of packages, opening the
door is polite. If the packages are on fire, opening the door is quite
inconsiderate and potentially self-destructive. You have asked me to open
the door. I'm smelling smoke.

--
--- Nick Malik [Microsoft]
Enterprise Application Architect
http://blogs.msdn.com/nickmalik

Disclaimer: Opinions expressed in this forum are my own, and not
representative of my employer.
I do not answer questions on behalf of my employer. I'm just a
programmer helping programmers.
--
"schneider" <eschneider@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:e43bjAJRHHA.2076@xxxxxxxxxxxxxxxxxxxxxxx
Look Nick the pattern is not the issue, I know what I want to do, and Ben
seems to understand, it's a language detail.

Either read the prior messages or scram...



"Nick Malik [Microsoft]" <nickmalik@xxxxxxxxxxxxxxxxxx> wrote in message
news:aaidnUhMBZOJ7iLYnZ2dnUVZ_uKknZ2d@xxxxxxxxxxxxxx
What's wrong with Visitor or Chain of Responsibility? You can set them
up at runtime.

--
--- Nick Malik [Microsoft]
MCSD, CFPS, Certified Scrummaster
http://blogs.msdn.com/nickmalik

Disclaimer: Opinions expressed in this forum are my own, and not
representative of my employer.
I do not answer questions on behalf of my employer. I'm just a
programmer helping programmers.
--
"schneider" <eschneider@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:eYUV0o$QHHA.4252@xxxxxxxxxxxxxxxxxxxxxxx
No, I know how to do a plug-in design, and already using it.

Trying to wire two methods together during runtime, similar to
addhandler but method to be called is discovered by reflection.

Currently using the Ben pattern, I just thought I might me missing
cleaner language feature...

Schneider


"Nick Malik [Microsoft]" <nickmalik@xxxxxxxxxxxxxxxxxx> wrote in message
news:0_2dnajF7cO_pyPYnZ2dnUVZ_uKknZ2d@xxxxxxxxxxxxxx
What is the objective? Do you want to be able to develop a plug-in for
your code, after the system is released, and have your system recognize
it?

If so, that's covered loosly by traditional Design Patterns. I would
recommend you investigate the Gang of Four Design Patterns, especially
Strategy, Visitor, and Chain of Responsibility. (good reference on GoF
patterns: http://home.earthlink.net/~huston2/dp/patterns.html )

Once you understand the design patterns that lead to frameworks, go
ahead and dive into a light framwork like Spring.Net. Here's an
article on Dependency Injection in .Net:
http://msdn.microsoft.com/msdnmag/issues/05/09/DesignPatterns/default.aspx


--
--- Nick Malik [Microsoft]
MCSD, CFPS, Certified Scrummaster
http://blogs.msdn.com/nickmalik

Disclaimer: Opinions expressed in this forum are my own, and not
representative of my employer.
I do not answer questions on behalf of my employer. I'm just a
programmer helping programmers.
--
"schneider" <eschneider@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:%230j09yVQHHA.488@xxxxxxxxxxxxxxxxxxxxxxx
I'm looking for a way to programaticly call a method from a different
object and associate the two objects at runtime.

Example: Object A exist and is unknow, I want object B to be able to
call a method on object A whenever needed.

Like addhandler but I don't know what the method is and must discover
it through reflection.

Maybe something like this:

Public Sub attach(ByVal valueA As Object)

Dim meth() As MethodInfo = value.GetType.GetMethods

Dim btnB As Button = New Button

Dim mitem As MethodInfo = meth(0) 'find the method I want somehow

AddHandler btnB.Click, mitem.[Selected_Method] '???

End Sub

Any ideas would be great.

Thanks,

Schneider














.