I am needing to know how to translate the VarArrayCreate method in Delphi into c#.  Let me step back and explain the scenario

I am in the process of converting a Delphi program over to C#.  The ActiveX component is Tidestone's F1Book spreadsheet that was developed prior to the .Net craze. And, of course is no longer available for windows.  The .Net environment created a COM wrapper around this ActiveX component so that the method calls are very similar, but not quite..

This one method that used a variant parameter now takes an object parameter

Here is the Delphi code..

procedure tAmortizationReport.CreateSummary
va
 VA: Variant
begi
 with fSS d
 begi
   VA := VarArrayCreate([0,1], varSmallInt)
   VA[0] := -3;
   VA[1] := 4;
   SORT(5, 1, 100, 10, True, VA)
 end
 ..
end

Where the SORT method has this variant parameter, and in this case, a variant array

The .NET translation for the SORT method looks like this...

Sort(int row1, int col1, int row2, int col2, bool rowSort, object Keys

I used the following assignment that I thought closely resembled the VarArrayCreate method in Delphi

object[] colstoSort = new object[2] {1,2}

I have tried many different types of assignments to the object Keys parameter, but each returns the following error..

************** Exception Text *************
System.Runtime.InteropServices.COMException (0x800A4E22): Invalid argument
  at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData& msgData
  at TTF160.IF1Book.Sort(Int32 nR1, Int32 nC1, Int32 nR2, Int32 nC2, Boolean bSortByRows, Object Keys

Can anyone fill me in as to what I am doing wrong

Also, is there another component that I may use instead of Tidestones?  I need to use one that allows the spreadsheet to be owned by the form.  I don't know how to do this with Excel