The following is the result of my test TextBox event, if there is something wrong, I hope to correct it.
First, click on the control with the mouse and leave it.
EntergotfocuslostfocusleValidatingValidated
Second, use the mouse when validating can Canceleventargs.cancel = true: EntergotfocuslostfocusleaveValidatintergotfocus
Third, when using the Tab key through a control.
EntergotfocusKeyupleValidatingValidatedLostfocus
Fourth, use the Tab keys during validating, caledeleventagentargs.cancel = true
EntergotfocusKeyupleValidatingenterKeyup
