var authContext = new AuthenticationContext(authority); var credentials = new UserCredential(username, password); var token = authContext.AcquireTokenAsync(resource, clientID, credentials).Result; var silentToken = authContext.AcquireTokenSilentAsync(resource, clientID).Result;
var authContext = new AuthenticationContext(authority); var refreshToken = new TokenCacheItem(tokenCache, authority, resource, clientId, user); var silentToken = authContext.AcquireTokenSilentAsync(resource, clientId, new UserIdentifier(user, UserIdentifierType.UniqueId), refreshToken.RefreshToken).Result;In this example, the authContext object is created with the appropriate authority. Then a refresh token is provided, which is used to acquire a token silently. The UserIdentifier object is used to specify the user for which the token is being acquired. In conclusion, the AuthenticationContext.AcquireTokenSilent method is a useful feature in the Microsoft.IdentityModel.Clients.ActiveDirectory package library that allows for seamless authentication without prompting for credentials again. This method can be used in a variety of scenarios, such as when a user has already authenticated previously and has a valid access or refresh token.