how can I get refresh token

Question

i learn this code sample :https://github.com/Azure-Samples/active-directory-dotnet-graphapi-web ,and yes ,i can get access token in AuthorizationCodeReceived : Authenticati

Answer 1

If you looking for a persistent mechanism, you can simply use TokenCache.Serialize()

Here's how I did it:

First, get the token and serialize the cache token

AuthenticationContext authContext = new AuthenticationContext($"https://login.microsoftonline.com/{Tenant}");
var authResult = authContext.AcquireTokenAsync(resource, ClientId, new Uri("https://login.microsoftonline.com/common/oauth2/nativeclient"), new PlatformParameters(PromptBehavior.SelectAccount)).Result;
byte[] blobAuth = authContext.TokenCache.Serialize();

Then, load the cached bytes

AuthenticationContext authContext = new AuthenticationContext($"https://login.microsoftonline.com/{tenant}/");
authContext.TokenCache.Deserialize(blobAuth);
var res = authContext.AcquireTokenSilentAsync(resource, clientId).Result;