Passing ADO.NET transaction ByVal or ByRef?

Hi there!

Please clear my doubt.


I have the following code:

Code:

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Sub MainProc()
  open connection
  SqlTrans=cn.begintrans(isolationlevel)
  'Use MS data access block
    SQLHelper.ExecuteNonQuery(SqlTrans,commandtype.storedprocedure,spname,myParameters)
 call ChildProc(SqlTrans)
    'exception handling here
  'if exception then rollback
  'else
  'commit
End sub

'My doubt is on the following line: whether to use ByVal or ByRef
Sub ChildProc(ByVal TransObj as SqlTransaction)
    'Use MS data access block here also
    SQLHelper.ExecuteNonQuery(TransObj,commandtype.storedprocedure,spname,myParameters)
    'Throw exception if any
End sub

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