UserNamePasswordValidator Class


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Validates a username and password.

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


Public MustInherit Class UserNamePasswordValidator


Initializes a new instance of the UserNamePasswordValidator class.


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


Gets an instance of a UserNamePasswordValidator that validates a username and password using the specified membership provider.


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)


Serves as the default hash function. (Inherited from Object.)


Gets the Type of the current instance.(Inherited from Object.)


Creates a shallow copy of the current Object.(Inherited from Object.)


Returns a string that represents the current object.(Inherited from Object.)

System_CAPS_pubmethodValidate(String, String)

When 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
    Inherits 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 Overrides Sub Validate(ByVal userName As String, ByVal password As String)
        If Nothing = userName OrElse Nothing = password Then
            Throw New ArgumentNullException()
        End If

        If Not (userName = "test1" AndAlso password = "1tset") AndAlso Not (userName = "test2" AndAlso password = "2tset") Then
            Throw New SecurityTokenException("Unknown Username or Password")
        End If

    End Sub 'Validate
End Class 'MyCustomUserNameValidator

.NET Framework
Available since 3.0

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

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