Initializes a new instance of the MembershipUserNameSecurityTokenHandler class that uses the default membership provider that is configured for the application.
Assembly: System.IdentityModel.Services (in System.IdentityModel.Services.dll)
No default membership provider is configured for the application.
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.