Passing ADO.NET transaction ByVal or ByRef?

[jeba]

Hi there!

Please clear my doubt.


I have the following code:

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