adding c style dll to c# app

[saleh]

hi,

i have a dll with its .h file,in the .h i found the [ extern "C" ] .
when i tried to add the dll to a c# app ,it give me that error
[please make sure that it is a valid com or assembly component]

so does anyone could help me to add the .dll to my app.

note: i don't have the source code.

thanks.

[gary]

Hi,

Try this link http://ablog.apress.com/?p=383

--
Cheers,
Gary
http://www.garyshort.org/

saleh wrote:

hi,

i have a dll with its .h file,in the .h i found the [ extern "C" ] .
when i tried to add the dll to a c# app ,it give me that error
[please make sure that it is a valid com or assembly component]

so does anyone could help me to add the .dll to my app.

note: i don't have the source code.

thanks.

[saleh]

hi Gary ,

thanks for your reply ,but it solve diifrent problem not mine

my problem is:the VS don't allow me to add reference to the dll from
the start and give me that error.

thanks,
saleh

[Willy Denoyette [MVP]]

"saleh" <na*********@gmail.comwrote in message
news:11*********************@a3g2000cwd.googlegrou ps.com...

hi,

i have a dll with its .h file,in the .h i found the [ extern "C" ] .
when i tried to add the dll to a c# app ,it give me that error
[please make sure that it is a valid com or assembly component]

so does anyone could help me to add the .dll to my app.

note: i don't have the source code.

thanks.

You can't add a "native code" dll to a C# project, C# cannot statically link to DLL's . If
you need to call "C" style functions exported from DLL's from C#, you'll have to import the
functions using the DllImport attribute. Search MSDN for details on PInvoke and DllImport.

Willy.