How to custom code GetByID c# form customization on table erp.partxrefvned

I am trying to lookup a row in the PartXrefVend table in form customization using c# and cannot find the adapter for the PartXrefVend table or any examples. I have successfully done this using the UD01 table in the example below.
bool ud01 = adapterUD01.GetByID(userid,"","","","");

How can I do the same for the PartXrefVend table?

Please help!!!

Thank you,
Richard

When I ran a trace looked like these are BO/methods that are involved?
BO: Erp.Proxy.BO.SupplierPart
Methods: GetNewSupplierPart
ChangeSupplierPartMfgNum
Update
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Do you have the BL Tester setup?
I find it is helpful for deciphering the specifics of methods/parameters/datasets
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