C# error when using VB Activex dll functions.

Question

Hello can sombody help in solving a problem

 I am having a problem when trying to call the function of VB ActiveX dll from C# and I am getting the error show at the end.

The VB Function is

Public Function GetStatistics(ByRef varStats() As Variant, Optional ByVal stStatType As e_STAT_TYPE = e_stCLIENT_STATS)  As Long

And the RCW has created the function as follows (when adding ref from Visual studio)

int GetStatistics(ref Array varStats, e_STAT_TYPE stStatType);

The problem is we cannot create the object of Array class as its abstract class and so what I am doing is creating an object array object and type casting it to the Array ref as follows.

 

object[] varstats = new object[0];

Array obj1 = varstats;

objAlm.GetStatistics(ref obj1, e_STAT_TYPE.e_stCLIENT_STATS)

And the RCW has created the function as follows (from TLBIMP.exe)

 

int GetStatistics(ref object[] varStats, e_STAT_TYPE stStatType);

object[] varstats = new object[0];

objAlm.GetStatistics(ref varstats, e_STAT_TYPE.e_stCLIENT_STATS)

This is giving the following error.

---------------------------

Invalid callee. (Exception from HRESULT: 0x80020010 (DISP_E_BADCALLEE))

---------------------------

OK   

Have you ever seen this error? Do you have any idea?

Waiting for your reply…

Regards,

Seshu.

Answer 1

Solved the problem by changing the following

object[,] varstats = new object[0,0];

Array obj1 = varstats;