TreeListBuilder<T>.OnFocusedRowChanging Method

Name	Parameters	Description
OnFocusedRowChanging(RazorBlock)	jsFunc	A function that is executed before the focused row changes. Applies only to data rows. focusedRowEnabled should be true. Mirrors the client-side onFocusedRowChanging option.
OnFocusedRowChanging(String)	jsFunc	A function that is executed before the focused row changes. Applies only to data rows. focusedRowEnabled should be true. Mirrors the client-side onFocusedRowChanging option.