Native dll in c# web app

[Angelos Pappas]

Hi Peter,

you cannot reference these DLLs directly within C# as these are not .Net 
assemblies, but simple windows DLLs. You have to write a C# wrapper 
around them and invoke them with platform invoke.

Here's some more info: 
https://msdn.microsoft.com/en-us/library/aa288468(v=vs.71).aspx

Search for "C# platform invoke" and you will get the idea.

Regards
Angelos


On 14/6/2016 00:59, Peter via openslide-users wrote:
> Hello,
>
> I try to make a .net webapp for a openslide viewer. Openslide depends on 20 native c++ libraries which i cannot reference in the c# project (visual studio 2015). (iconv.dll, libtiff-5.dll, ...)
>
> It keeps saying that those libraries are not a valid COM assembly. Or that they do not have an entry point.
>
> In a normal C# app, I simply would copy the dlls to the /bin folder. Then they are loaded when the program starts. However, this does not work for a webapp (it keeps saying that openslide or one of its dependencies is not found).
>
> Is there a way to generate valid COM assembly dlls which can be referenced in VS15 in the project?
>
> Or can I maybe rebuild the dlls (how)?
>
> Thanks,
>   Peter
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