MembershipProvider.PasswordStrengthRegularExpression Property (System.Web.Security)

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.NET Framework Class Library

MembershipProvider.PasswordStrengthRegularExpression Property

Gets the regular expression used to evaluate a password.

Namespace: System.Web.Security
Assembly: System.Web.ApplicationServices (in System.Web.ApplicationServices.dll)

Syntax

Visual Basic

Public MustOverride ReadOnly Property PasswordStrengthRegularExpression As String
	Get

public abstract string PasswordStrengthRegularExpression { get; }

Visual C++

public:
virtual property String^ PasswordStrengthRegularExpression {
	String^ get () abstract;
}

abstract PasswordStrengthRegularExpression : string

Property Value

Type: System.String
A regular expression used to evaluate a password.

Remarks

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.

Examples

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>

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, 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.

Reference

MembershipProvider Class

System.Web.Security Namespace

Other Resources

Introduction to Membership