Great as ASP.Net 2.0 Membership and Login Controls are sometimes they fall short in functionality.
A common requirement is to allow users to log-in by email address. No problem with this snippet:
void LogUserIn (string email, string password)
{
string username = Membership.GetUserNameByEmail(email);
if (username != null
&& Membership.ValidateUser(username, password))
{
// successfully authenticated
FormsAuthentication.RedirectFromLoginPage(username, false);
}
else
{
// Display login error
}
}
Remember - this only makes sense if you have set the MembershipProvider's RequiresUniqueEmail property to true. Otherwise Membership.GetUserNameByEmail will simply return the first username for the email address.
"ASP.Net Membership: How To Log A User In By Email Address"
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