What is Forms Authentication's, OnAuthenticate Event?

I'm using Asp.net Membership provider. I want to know which event triggered when a person authenticated on site. ( I mean login)

my authentication mode is forms

<authentication mode="Forms">

I tried

FormsAuthentication_OnAuthenticate

this event at global.asax. But it is triggering not only login, it triggers all requ开发者_StackOverflowests.

I think Asp.net must have this event. So which is??

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I interpret your question in such a way that you want to get one event each time the user logs in, but only once per session. Since you are using Membership provider I guess you also use the login control.

In that case it seems to me that are looking for the LogggedIn, not in the global.asax but as an event of the Login control.

Occurs when the user logs in to the Web site and has been authenticated.

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.login.aspx