Membership.MinRequiredNonAlphanumericCharacters Property
Assembly: System.Web (in system.web.dll)
The MinRequiredNonAlphanumericCharacters property returns the minimum number of special, non-alphanumeric characters that must be entered to create a valid password for the membership provider specified in the Provider property.
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 code 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 minRequiredNonalphanumericCharacters attribute to 1 character.
<membership defaultProvider="SqlProvider"
userIsOnlineTimeWindow = "20>
<providers>
<add
name="SqlProvider"
type="System.Web.Security.SqlMembershipProvider"
connectionStringName="SqlServices"
requiresQuestionAndAnswer="true"
minRequiredNonalphanumericCharacters="1"
/>
</providers>
</membership>