ActiveDirectoryMembershipProvider.MinRequiredNonAlphanumericCharacters Property


Gets the minimum number of special characters that must be present in a valid password.

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

public override int MinRequiredNonAlphanumericCharacters { get; }

Property Value

Type: System.Int32

The minimum number of special characters that must be present in a valid password.

Exception Condition

The MinRequiredNonAlphanumericCharacters property is accessed before the ActiveDirectoryMembershipProvider instance is initialized.

The MinRequiredNonAlphanumericCharacters property returns the minimum number of special, non-alphanumeric characters that must be entered to create a valid password.

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

A non-alphanumeric character is a character for which the IsLetterOrDigit method returns false.

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 ActiveDirectoryMembershipProvider class to provide membership services, and sets the minRequiredNonalphanumericCharacters attribute to one character.

    <add name="ADService" connectionString="LDAP://ldapServer/" />
    <membership defaultProvider="AspNetActiveDirectoryMembershipProvider">
        <add name="AspNetActiveDirectoryMembershipProvider" 
          System.Web, Version=2.0.3600, Culture=neutral, 
          minRequiredNonalphanumericCharacters = "1" />

.NET Framework
Available since 2.0
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