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MembershipProvider.PasswordStrengthRegularExpression Property

Gets the regular expression used to evaluate a password.

Namespace: System.Web.Security
Assembly: System.Web (in system.web.dll)

public abstract string PasswordStrengthRegularExpression { get; }
/** @property */
public abstract String get_PasswordStrengthRegularExpression ()

public abstract function get PasswordStrengthRegularExpression () : String

Not applicable.

Property Value

A regular expression used to evaluate a password.

The PasswordStrengthRegularExpression property gets the regular expression used to evaluate password complexity for the MembershipProvider object.

The PasswordStrengthRegularExpression property is set in the application configuration using the passwordStrengthRegularExpression attribute of the membership Element (ASP.NET Settings Schema) configuration element.

The following example shows the membership Element (ASP.NET Settings Schema) configuration element in the system.web section of the application's Web.config file. It specifies that the application use an instance of the SqlMembershipProvider class to provide membership services, and sets the passwordStrengthRegularExpression attribute to a regular expression that validates that the password meets the following criteria:

  • Is greater than seven characters.

  • Contains at least one digit.

  • Contains at least one special (non-alphanumeric) character.

If the password does not meet these criteria, the password is not accepted by the membership provider.

<membership defaultProvider="SqlProvider"
  userIsOnlineTimeWindow = "20>
  <providers>
    <add
      name="SqlProvider"
      type="System.Web.Security.SqlMembershipProvider"
      connectionStringName="SqlServices"
      requiresQuestionAndAnswer="true"
      passwordStrengthRegularExpression="@\"(?=.{6,})(?=(.*\d){1,})(?=(.*\W){1,})"
      />
  </providers>
</membership>

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0
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