Memory corrupt issue for the function cbainscan from cbw32.dll

debugging is not possible, we have imported cbw32.dll from VB code and using the function from this dll directly.

The function I am using is as given below:
_ulStat = cbAInScan(BoardNum0, LowChan, HighChan, a, CbRate, Gain, _memHandle0, GlobalVariables.BlockIo)

this is my function in which following are the parameters with their values:

private const uint BoardNum0 = 0;
private const uint LowChan = 0;
private const uint HighChan = 0;
uint a = 2000;
private const uint Gain = 4;
private const uint CbRate = 15000;
uint _memHandle0 = cbWinBufAlloc(NumPoints) : whose value is 239992832 after buffer allocation;
public const uint BlockIo = 96;

and it’s giving an error ‘Attempted to read or write protected memory. This is often an indication that other memory is corrupt’ after an execution.

the VB code function that I have converted to C# is given below:

Declare Function cbAInScan Lib "cbw32.dll" (ByVal BoardNum&, ByVal LowChan&, ByVal HighChan&, ByVal CBCount&, CBRate&, ByVal Gain&, ByVal MemHandle&, ByVal Options&) As Long

can you please suggest me where I am going wrong in my implementation?

it is not possible to debug function from the dll

Declare Function cbAInScan Lib "cbw32.dll" (ByVal BoardNum&, ByVal LowChan&, ByVal HighChan&, ByVal CBCount&, CBRate&, ByVal Gain&, ByVal MemHandle&, ByVal Options&) As Long


i have just converted this VB code to c# and i got parameter from the same VB code is that conversion correct?

specifically can you tell about the memory Handle and CbRate parameter conversions from VB to c# is correct or not i am stuck with this problem from past 4 days but i m still haven't got any useful solution.