button reference in one routine

Hello.  I have a form with 5 buttons on it.  Setting up a routine in which all 5 buttons will be inside it rather than 5 separate ones.  I've assigned a tag to each button and are attempting to do the following code below.  Unfortunately the process never gets past the first IF regardless of button.  I tried the .Name as well but that didn't work either, same outcome.  I used the shipping button and stepped thru with a breakpoint and it gets to the first IF and shows tag is parentcompany and goes into it even tho the button used was shippingmethod tag.  Below is what I have.  I took all the code inbetween the brackets out to shorten it up. 

Anyone with any thoughts on this?

Thanks...John

                if (btnParentCompanyList.Tag.ToString() == "parentcompany")
                {
                }

                else if (btnCompanyShippingMethodList.Tag.ToString() == "shippingmethod")
                {