尝试在Button Click事件中调用Update方法

I am looping 2 Datagrids and getting the IndividualID's (PrimaryKeys) of the person(s) that are selected. I have debugged this and the loops are working fine. Howver when I call my Update Method from my Table Adapter, nothing seems to happen. It does not update. Here is my code. Not sure what I'm doing wrong:I am looping 2 Datagrids and getting the Indivi