Problem while using NATUPNPLib in .NET 3.5

Question

4.50/5 (2 votes)

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Hello Every1,

I am having trouble using the NATUPnPLib. I have a piece of code that works perfectly fine while the project is running on .Net 4. But, unfortunately when I try the same piece of code in .Net3.5, I get some assembly reference errors while building.

C#

UPnPNATClass upnpnat = new UPnPNATClass();

            IStaticPortMappingCollection mappings = upnpnat.StaticPortMappingCollection;

And i get the following build errors:

The type or namespace name 'UPnPNATClass' could not be found (are you missing a using directive or an assembly reference?

Although i have added the reference to the NatUPnP Library from Add Reference --> COM

I have scoured the internet to find a solution but i was unable to find any help. I hope someone here might be able to help out.

P.S: I followed this link

Thanx & Regards,
Umer

Posted 20-Mar-12 21:56pm

Umer Aziz Malik

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Comments

Andy411 21-Mar-12 4:12am

You added a reference, but did you add the using directive in your cs-file? Usually at the top of the file. Something like using NATUPnP; just below using System;

Umer Aziz Malik 21-Mar-12 4:14am

Yes i did. As i said, the same code had been working with .Net 4. But i have to get the project to .Net 3.5 and it is not working there.

Thanx

2 solutions

Solution 1

I just created a little project with .net 3.5 an added a reference to the NATUPNPLib. I opened the object browser but NATUPNPLib doesn't contain a class called UPnPNATClass. And thats's what the error message is saying.
When I change the project to .net 4.0 the class UPnPNATClass exists in the object browser.

It looks like the link you posted only describes a solution for .Net 4.0.

[Edit]Sorry, I posted it as a solution, even if it is not a real solution. But IMO it answers your question.[/Edit]

Posted 20-Mar-12 22:27pm

Andy411

Updated 20-Mar-12 22:29pm

v2

Comments

Umer Aziz Malik 21-Mar-12 4:30am

Thanx for the effort. But i had already checked this myself
And my impression is that the guy in that link is using VS2008 so there might just be a way to make this work

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Umer Aziz Malik · Accepted Answer · 2012-04-20T03:59:00

Solution 2

I tried everything possible, and i got to the conclusion that you can't use the method specified above in .NET3.5

Posted 20-Apr-12 3:59am

Umer Aziz Malik