If no event name is specified in a trigger, the trigger automatically references the control's default event (e.g., Button.Click)
Call Web service and use WDH to show traffic on the wire.
The first null passed to the login function is used to pass custom data. The second null is a redirect URL. If a redirect URL is specified, the user is redirected to that location following a successful login. The third parameter to the login function specifies whether a logged-in user should be issued a temporary auth cookie (false) or a persistent auth cookie (true). In order for all this to work, the application's authentication mode must be set to &quot;Forms.&quot;