如何使用Enter键在字段之间导航

My company has a large application written in VB6, and for historical reasons, the application is navigated with the Enter key instead of with the Tab key. I don't know VB6, but I know that they currently set the focus for each control in a big select statement in the Form's KeyUp event if it's an EnterKey. Now we are starting to convert to .NET, and have to keep things consistent so the users won't have to TAB on some forms and ENTER on others. I want to write ancestor forms that will automatically ENTER from field to field instead of tabbing. A coworker told me that the way it's done in VB6 is to process buttons not on the CLICK event but on the KEYUP event. I need to continue doing this so I won't have leftover KeyUp events to pass back to VB6 after my form is finished. The order of events for buttons isMy company has a large application written in V