RE: FN-FORUM: .NET calling unknown functions from code

date posted 17th January 2005 22:55

Interesting, CallByName is not available in C#, although apparently it may
be available by adding a reference to the visual basic namespace!? I wonder
what other VB goodies I can get at that way?

-----Original Message-----
From: [EMAIL REMOVED] [EMAIL REMOVED] On Behalf Of Andy
Macnaughton-Jones
Sent: 17 January 2005 23:14
To: FN-FORUM / [EMAIL REMOVED]
Subject: RE: FN-FORUM: .NET calling unknown functions from code


Cheers, I'll have a look. The thing I was actually trying to remember
was "CallByName" which lets you call functions by knowing the name of
the function as a string.

-----Original Message-----
From: [EMAIL REMOVED] [EMAIL REMOVED] On Behalf Of
[EMAIL REMOVED]
Sent: Monday, January 17, 2005 11:04 PM
To: Andy Macnaughton-Jones
Subject: RE: FN-FORUM: .NET calling unknown functions from code


Andy,

As far as I know because .net is inherently strongly typed, you can't
call functions in that way. The only way I know of is to use the
System.Reflection namespace to examine a target object and use one of
the Invoke methods to call it's methods dynamically. I've found one
article that may be of use:

http://builder.com.com/5100-6373_14-1050654.html

HTH

Danny

-----Original Message-----
From: [EMAIL REMOVED] [EMAIL REMOVED] On Behalf Of Andy
Macnaughton-Jones
Sent: 17 January 2005 20:16
To: FN-FORUM / [EMAIL REMOVED]
Subject: FN-FORUM: .NET calling unknown functions from code


Hi,
I'm trying to build some code whereby the generates ASP.NET pages will
control the code / functions that are called.

Because the pages are generated by xslt, I don't want to limit the
functions that may or may not be called.

I can't remember how in VB.NET to call a function by a soft-coded name.

E.g.


Dim X as string

X = fnMyFunction("123")



Is fine

But how do I do;

Dim X as string
Dim Y as string

Y = "fnMyFunction"

X = Y("123")

If that makes sense.

Otherwise I'm going to have to hard code all of the functions that I may
or may not call. This is for some shared code and I don't want to have
to limit what I'm doing at this point.

The other option I had was to create an standard interface and create
objects that way, but using createobject("object.class") doesn't work
for me in .NET, so I'm a bit buggered.

Suggestions on a plate please ;-)

Cheers
Andy
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