This documentation is archived and is not being maintained.

UserNamePasswordValidator Class

Validates a username and password.


Namespace:  System.IdentityModel.Selectors
Assembly:  System.IdentityModel (in System.IdentityModel.dll)

public abstract class UserNamePasswordValidator

The UserNamePasswordValidator type exposes the following members.

Protected methodUserNamePasswordValidatorInitializes a new instance of the UserNamePasswordValidator class.

Public propertyStatic memberNoneGets a validator that performs no validation on the username and password. As a result, the username and password are always deemed valid.

Public methodStatic memberCreateMembershipProviderValidatorGets an instance of a UserNamePasswordValidator that validates a username and password using the specified membership provider.
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Public methodValidateWhen overridden in a derived class, validates the specified username and password.

Use the UserNamePasswordValidator class to specify how a username and password is validated. This can be done by deriving a class from UserNamePasswordValidator and override the Validate method. For more information about creating a custom user name and password validator, see How to: Use a Custom User Name and Password Validator.

public class MyCustomUserNameValidator : UserNamePasswordValidator
    // This method validates users. It allows two users, test1 and test2 
    // with passwords 1tset and 2tset respectively.
    // This code is for illustration purposes only and 
    // MUST NOT be used in a production environment because it is NOT secure.	
    public override void Validate(string userName, string password)
        if (null == userName || null == password)
            throw new ArgumentNullException();

        if (!(userName == "test1" && password == "1tset") && !(userName == "test2" && password == "2tset"))
            throw new SecurityTokenException("Unknown Username or Password");

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.