C＃：。Net：用于控制台应用程序的代码。 在WCF服务上运行时，相同的代码失败

Question

I have an application which is using a module A(.net assembly) and module A uses module B(.net assembly) and module B uses module C(C++).

Since many applications in the server use this, i have registered the managed modules to registry and installed them in GAC.

Now i am accessing module A(which does all the job) by below code :

Type moduleAType = Type.GetTypeFromProgID("ModuleA.Class1"); object class1Object = Activator.CreateInstance(moduleAType);

The above two lines of Code works fine when running as console application. But the same code throws an error when i deploy it as WCF service and make a request :

"Could not load the assembly ModuleB or one of its dependencies".

To try fix the above error in WCF service , i copied all the dlls ModuleA , ModuleB and ModuleC to the bin of my service installation folder and now i get the same above error while browsing the service. I guess some system modules are not being picked up when running as WCF service.

I tried using ProcMon to see where Asp.Net is picking up the dlls from , but i was not able to figure it out. Any suggestions / help would be very helpfull

Note : Both Console App and WCF service run under same user in the same machine.

Answer 1

I somehow made this work for me. Hope it helps others by sharing it.

I did some logging and found that the running directory of my service is c:\\windows\\system32\\inetsrv and in dependency walker i found most of the dlls(system specific) that my ModuleB depends are in c:\\windows\\system32.

So i created a shortcut to system32(c:\\windows\\system32) folder inside inetsrv(c:\\windows\\system32\\inetsrv) and it started working for me.