events representatives asp.net master pages

how locate tradition eventuality carried master page?

on master page i have tradition eventuality delegate:

public eventuality signouthandler signout;
public nominee vacant signouthandler();

this carried couple symbol master page clicked.

if (signout != null)
{
    signout();
}

in user control page i'd allow event, nonetheless i don't know i'm ostensible opening it. customarily i'd something like:

myinstantiatedmasterpage.signout += new mymasterpage.signouthandler(myevent);

but traffic master page means isn't possible.