ActiveDirectoryMembershipProvider.MinRequiredNonAlphanumericCharacters Property
Gets the minimum number of special characters that must be present in a valid password.
Assembly: System.Web (in System.Web.dll)
'Declaration Public Overrides ReadOnly Property MinRequiredNonAlphanumericCharacters As Integer 'Usage Dim instance As ActiveDirectoryMembershipProvider Dim value As Integer value = instance.MinRequiredNonAlphanumericCharacters
Property Value
Type: System.Int32The minimum number of special characters that must be present in a valid password.
| Exception | Condition |
|---|---|
| InvalidOperationException | 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.
<configuration>
<connectionStrings>
<add name="ADService" connectionString="LDAP://ldapServer/" />
</connectionStrings>
<system.web>
<membership defaultProvider="AspNetActiveDirectoryMembershipProvider">
<providers>
<add name="AspNetActiveDirectoryMembershipProvider"
type="System.Web.Security.ActiveDirectoryMembershipProvider,
System.Web, Version=2.0.3600, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a"
minRequiredNonalphanumericCharacters = "1" />
</providers>
</membership>
</system.web>
</configuration>
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
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.