/// <summary>
/// Get Token for User.
/// </summary>
/// <returns>Token for user.</returns>
public static async Task <string> GetTokenForUserAsync()
{
AuthenticationResult authResult;
IEnumerable <IAccount> accounts = await IdentityClientApp.GetAccountsAsync();
IAccount firstAccount = accounts.FirstOrDefault();
try
{
authResult = await IdentityClientApp.AcquireTokenSilentAsync(Scopes, firstAccount);
}
catch (MsalUiRequiredException)
{
authResult = await IdentityClientApp.AcquireTokenAsync(Scopes);
}
return(authResult.AccessToken);
}
/// <summary>
/// Get a Microsoft Graph access token using the v2.0 Endpoint.
/// </summary>
/// <param name="appClientId">Application client ID</param>
/// <param name="uiParent">UiParent instance - required for Android</param>
/// <param name="redirectUri">Redirect Uri - required for Android</param>
/// <param name="loginHint">UPN</param>
/// <returns>An oauth2 access token.</returns>
public async Task <string> GetUserTokenV2Async(string appClientId, UIParent uiParent = null, string redirectUri = null, string loginHint = null)
{
if (_identityClient == null)
{
_identityClient = new MSAL.PublicClientApplication(appClientId);
}
if (!string.IsNullOrEmpty(redirectUri))
{
_identityClient.RedirectUri = redirectUri;
}
var upnLoginHint = string.Empty;
if (!string.IsNullOrEmpty(loginHint))
{
upnLoginHint = loginHint;
}
MSAL.AuthenticationResult authenticationResult = null;
try
{
IAccount account = (await _identityClient.GetAccountsAsync()).FirstOrDefault();
authenticationResult = await _identityClient.AcquireTokenSilentAsync(DelegatedPermissionScopes, account);
}
catch (MsalUiRequiredException)
{
try
{
authenticationResult = await _identityClient.AcquireTokenAsync(DelegatedPermissionScopes, upnLoginHint, uiParent);
}
catch (MsalException)
{
throw;
}
}
return(authenticationResult?.AccessToken);
}
/// <summary>
/// Get Token for User.
/// </summary>
/// <returns>Token for user.</returns>
public static async Task <string> GetTokenForUserAsync()
{
AuthenticationResult authResult = null;
try
{
IEnumerable <IAccount> accounts = await IdentityClientApp.GetAccountsAsync();
IAccount firstAccount = accounts.FirstOrDefault();
authResult = await IdentityClientApp.AcquireTokenSilentAsync(Scopes, firstAccount);
return(authResult.AccessToken);
}
catch (MsalUiRequiredException ex)
{
// A MsalUiRequiredException happened on AcquireTokenSilentAsync.
//This indicates you need to call AcquireTokenAsync to acquire a token
authResult = await IdentityClientApp.AcquireTokenAsync(Scopes);
return(authResult.AccessToken);
}
}