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UserNamePasswordValidator.Validate Method

When overridden in a derived class, validates the specified username and password.

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

public abstract void Validate(
	string userName,
	string password


Type: System.String

The username to validate.

Type: System.String

The password to validate.

Override the Validate method to specify how the username and password is validated. If the username and password do not pass validation, then throw a SecurityTokenValidationException.

// 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");

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5, 3.0