calling a C# function from asp page

Question

I wrote a small function in C# that manipulates pdf files using itextsharp. Is it possible to call this function from a classic asp page?

-Vivek

Justin Niessner · Accepted Answer · 2010-07-01 15:15:19Z

2

Yes.

You can either expose your C# class via COM to the Classic ASP page or create a .NET Web Service that you can call from the Classic ASP page.

Personally, I would suggest exposing your C# class via COM (follow the "Exposing C# to COM" section).

answered Jul 1, 2010 at 15:15

Justin Niessner

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Sandor Drieënhuizen · Accepted Answer · 2010-07-01 15:15:30Z

1

Yes, if you register the C# assembly as a COM+ component (using regsvcs.exe). You can then do this:

Set myObject = Server.CreateObject("mynamespace.myobject.myclass")
myObject.MyMethod()

answered Jul 1, 2010 at 15:15

Sandor Drieënhuizen

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2 Comments

Sandor Drieënhuizen Over a year ago

@Robaticus: AFAIK, you can't do that with .NET.

Robaticus Over a year ago

Sure you can. That's what interop is for.

Robaticus · Accepted Answer · 2010-07-01 15:15:30Z

0

Probably. You'll need to COM expose it.

answered Jul 1, 2010 at 15:15

Robaticus

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2 Comments

Robaticus Over a year ago

Wow, hater's gotta hate, I guess. I'm not sure why the down-vote, as the answer is, frankly, correct. The answer is definitely not a simple "yes," as there are elements that can cause it to be unable to be called from classic ASP, and the answer (as shown elsewhere) is to COM expose the DLL.

Mike Loux Over a year ago

"Why are you booing me? I'm right!" I upvoted you to compensate. :-P

Jagmag · Accepted Answer · 2010-07-01 15:18:31Z

0

One option is to use the .NET utility TlbExp.exe to create the CCW for the .NET library. This CCW can definitely be called from classic ASP. You can instantiate it using Server.CreateObject ("...") http://msdn.microsoft.com/en-us/library/hfzzah2c(VS.80).aspx

answered Jul 1, 2010 at 15:18

Jagmag

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JohnFx · Accepted Answer · 2010-07-01 15:19:40Z

0

Build the C# code into a dll and use REGASM to expose it to COM clients (like asp). Alternately, on the project settings..compile tab you can check the box "Register for COM Interop"

answered Jul 1, 2010 at 15:19

JohnFx

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