VC++ Unmanaged DLL in C#.net

[sganeshcse]

Hi All..

I have a VC++ unmanaged dll in the shared drive. I have to call that one in to my C# application which is residing on my local hard drive.

Clients restrictions are below

1) We should not register Vc++ dll on the local machine
2) We should not have the local copy of the dll

I am struck on this for last 5 days...I am not able to find the solution....

Please someone help me on this scenario....

[PRR]

As far as i know you need to register the dll using Regsvr32
... then add reference or add com reference.... i have limited knowledge in this area .. so may be there are other ways ...

[vekipeki]

Is it a COM object, or simply a native .dll? Why can't you P/Invoke it using DllImport?

[sganeshcse]

It is not a COM dll. Is DLLImport is a runtime invocation method?

[vekipeki]

Good point... I don't think you can change the DllImport path during runtime. I wonder if it could be done through some Reflection (or Reflection.Emit )?

Anyway, a general way would be to P/Invoke Kernel32.LoadLi braryW:

// using System.Runtime.InteropServices;
[DllImport("kernel32.dll", EntryPoint = "LoadLibraryW")]
static extern IntPtr LoadLibraryW([In][MarshalAs(UnmanagedType.LPWStr)] string lpLibFileName);

and then use Kernel32.GetPro cAddress to get the function pointer to your native function.

I Googled for ".NET Kernel32 GetProcAddress" and this came up: http://blogs.msdn.com/jmstall/archiv...ocAddress.aspx