Security. User Exists(String) Method
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Returns a value that indicates whether the specified user exists in the membership database.
public static bool UserExists (string userName);
static member UserExists : string -> bool
Public Shared Function UserExists (userName As String) As Boolean
The user name.
true if the
username exists in the user profile table; otherwise, false.
The Initialize(String, NameValueCollection) method was not called.-or-The InitializeDatabaseConnection method was not called.-or-The SimpleMembershipProvider membership provider is not registered in the configuration of your site. For more information, contact your site's system administrator.