PowerBuilder - Error calling an external function

[Former Member]

Hi,

I am trying to call a function located in a DLL that was developed for us. When I try to run the script it is showing me the following error: "Error opening DLL library Encryption.dll for external function at line ....... ".

How I am defining the External functions on PowerBuilder?

Function string EncryptStringAES &
(string plainText, &
string sharedSecret &
) Library "Encryption.dll" Alias For "EncryptStringAES"

Function string DecryptStringAES &
(string cipherText, &
string sharedSecret &
) Library "Encryption.dll" Alias For "DecryptStringAES"

How they are in the DLL ?

The class name is Crypto, and it is in the Encryption namespace.

public static string EncryptStringAES(string plainText, string sharedSecret)

public static string DecryptStringAES(string cipherText, string sharedSecret)

I am using PB 10.2.1 , for now!

Thanks.

[Former Member]

I think you have a .NET assembly and not a normal dynamic link library. The file extension for an assembly is .DLL but it is not a real Windows DLL! So you can't use it this way.

https://forums.asp.net/t/1536669.aspx?Difference+between+normal+DLL+net+DLL

You may use the assembly as a COM object.

http://pbdj.sys-con.com/node/1668463