ADAL v3 has the UserPasswordCredential class, but I cannot find a working implementation. There's no AcquireToken overload which accepts a UserPasswordCredential or UserCredential type. What is the correct way of performing the username&password flow in ADAL v3? This particular piece of code is using full .Net 4.5.
If you were developing with client app, you can refer the code below to acquire the token:
string authority = "https://login.microsoftonline.com/xxxx.onmicrosoft.com";
string resrouce = "https://graph.windows.net";
string clientId = "";
string userName = "";
string password = "";
UserPasswordCredential userPasswordCredential = new UserPasswordCredential(userName,password);
AuthenticationContext authContext = new AuthenticationContext(authority);
var token= authContext.AcquireTokenAsync(resrouce,clientId, userPasswordCredential).Result.AccessToken;
And if you were developing with web app( this is not common scenario), there is no such method in ADAL V3 to support this scenario. As a workaround, you may construct the request yourself. Here is an example for your reference:
POST: https://login.microsoftonline.com/xxxxx.onmicrosoft.com/oauth2/token
Content-Type: application/x-www-form-urlencoded
resource={resource}&client_id={clientId}&grant_type=password&username={userName}&password={password}&scope=openid&client_secret={clientSecret}