1 files changed, 7 insertions, 2 deletions
diff --git a/samples/OAuthAuthorizationServer/Code/OAuth2AuthorizationServer.cs b/samples/OAuthAuthorizationServer/Code/OAuth2AuthorizationServer.cs
index f515949..b837d4c 100644
--- a/samples/OAuthAuthorizationServer/Code/OAuth2AuthorizationServer.cs
+++ b/samples/OAuthAuthorizationServer/Code/OAuth2AuthorizationServer.cs
@@ -80,12 +80,17 @@
 			return consumerRow;
 		}
 
-		#endregion
-
 		public bool IsAuthorizationValid(IAuthorizationDescription authorization) {
 			return this.IsAuthorizationValid(authorization.Scope, authorization.ClientIdentifier, authorization.UtcIssued, authorization.User);
 		}
 
+		public bool IsResourceOwnerCredentialValid(string userName, string password) {
+			// This web site delegates user authentication to OpenID Providers, and as such no users have local passwords with this server.
+			throw new NotSupportedException();
+		}
+
+		#endregion
+
 		public bool CanBeAutoApproved(EndUserAuthorizationRequest authorizationRequest) {
 			if (authorizationRequest == null) {
 				throw new ArgumentNullException("authorizationRequest");