Using C DLL in C#

[Raed Sawalha]

I have a C DLL and I need to use in C# i tried to load and use the function
as following but exception generated with error
An unhandled exception of type 'System.EntryPointNotFoundException' occurred
in CDicLib.exe

Additional information: Unable to find an entry point named in_wn in DLL
E:\Dictionary\CDicLib\Lib\tcl84.dll.
[DllImport("E:\\Dictionary\\CDicLib\\Lib\\tcl84.dll ")]
public static extern int in_wn(string searchstr, int pos);
in main funciton in c#
i called in_wn("asdasdasdasdsad",3");//exception occured

[Richard Blewett [DevelopMentor]]

"Raed Sawalha" <Ra*********@discussions.microsoft.com> wrote in message
news:22**********************************@microsof t.com...

I have a C DLL and I need to use in C# i tried to load and use the function
as following but exception generated with error
An unhandled exception of type 'System.EntryPointNotFoundException'
occurred
in CDicLib.exe

Additional information: Unable to find an entry point named in_wn in DLL
E:\Dictionary\CDicLib\Lib\tcl84.dll.
[DllImport("E:\\Dictionary\\CDicLib\\Lib\\tcl84.dll ")]
public static extern int in_wn(string searchstr, int pos);
in main funciton in c#
i called in_wn("asdasdasdasdsad",3");//exception occured

Well its saying there is no function called in_wn exported from the dll. Are
you sure thats the right entry point name? You can check by running

dumpbin /exports E:\Dictionary\CDicLib\Lib\tcl84.dll

from the command line

Regards

Richard Blewett - DevelopMentor
http://www.dotnetconsult.co.uk/weblog
http://www.dotnetconsult.co.uk

[Jeff Louie]

Some general help here also:
http://www.geocities.com/Jeff_Louie/...op/pinvoke.htm

Regards,
Jeff

*** Sent via Developersdex http://www.developersdex.com ***

[Dhans]

Specify the EntryPoint in DllImport Attribute as the method which you are
trying to call from the .NET code.

like this,
[DllImport("E:\\Dictionary\\CDicLib\\Lib\\tcl84.dll ", EntryPoint =
"MethodNameInDll")]
public static extern int in_wn(string searchstr, int pos);

Hope this would help you...

Regards,
Dhans

"Raed Sawalha" wrote:

I have a C DLL and I need to use in C# i tried to load and use the function
as following but exception generated with error
An unhandled exception of type 'System.EntryPointNotFoundException' occurred
in CDicLib.exe

Additional information: Unable to find an entry point named in_wn in DLL
E:\Dictionary\CDicLib\Lib\tcl84.dll.
[DllImport("E:\\Dictionary\\CDicLib\\Lib\\tcl84.dll ")]
public static extern int in_wn(string searchstr, int pos);
in main funciton in c#
i called in_wn("asdasdasdasdsad",3");//exception occured