Passing Classic ASP Request.BinaryRead SafeArray to C# com interop component

[skeptics]

Trying to pass a SafeArray that i get form Request.BinaryRead Method in classic asp to a c# com interop component. In this thread i found a solution to pass and cast a normal asp safearray in to a c# array: http://bytes.com/groups/net/114755-p...to_threadtools

but no matter what i try. i cant pass a array that i get from Request.BinaryRead Method in to the component. i always get a error like this :
(0x80004003) Object reference not set to an instance of an object.

com

 
namespace foo
{
    [Guid("AD627CAC-BC38-445b-8929-05B8315EBBCF")]
    [InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
    public interface Ibar
    {
        [DispId(1)]
        string errorMessage
        {
            get;
        }
 
        [DispId(2)]
        void readSafeArray(object[] safearray);
 
    }
 
    [Guid("003BC37A-888A-4bcd-A384-4D398AC85564")]
    [ClassInterface(ClassInterfaceType.None)]
    [ProgId("foo.cfoo")]
    public class cfoo : Ibar
    {
 
        private String _errorMessage;
 
        public cfoo()
        {
 
        }
 
        public void readSafeArray(object[] safearray)
        {
            Array arr = (Array)safearray;
 
            _errorMessage += arr.Length.ToString();
        }
 
 
        public string errorMessage
        {
            get
            {
                return _errorMessage;
            }
 
        }
 
    }
}
 
 
 

Classic ASP code

<% 
 
Dim ff 
Set ff = CreateObject("foo.cfoo")
 
Dim sar
 
'this doesn't work
 
sar = Request.BinaryRead(Request.totalBytes)
ff.readSafeArray(sar)
 
 
Response.Write(ff.errorMessage)
 
'this works
 
Dim arr(2) 
arr(0) = CByte(1) 
arr(1) = CByte(2)
arr(2) = CByte(3)
 
ff.readSafeArray(arr)
 
Response.Write(ff.errorMessage)
 
%> 
 
 

can someone point me in the right direction please

thanks