private void LoginButtonClicked(object sender, EventArgs e)
{
// Get the values entered in the text fields
var username = UsernameEntry.Text;
var password = PasswordEntry.Text;
// Make sure the user entered all values
if (string.IsNullOrEmpty(username) ||
string.IsNullOrEmpty(password))
{
DisplayAlert("Login", "Please enter a username and password", "OK");
return;
}
// Fire the OnLoginInfoEntered event and provide the login values
if (OnLoginInfoEntered != null)
{
// Create a new LoginEventArgs to contain the user's values
var loginEventArgs = new LoginEventArgs(username.Trim(), password.Trim());
// Raise the event
OnLoginInfoEntered(sender, loginEventArgs);
}
}
// Handle the OnLoginEntered event from the login UI
// LoginEventArgs contains the username, password, and domain that were entered
private async void LoginInfoEntered(object sender, LoginEventArgs e)
{
// Make sure the task completion source has all the information needed
if (_loginTaskCompletionSrc == null ||
_loginTaskCompletionSrc.Task == null ||
_loginTaskCompletionSrc.Task.AsyncState == null)
{
return;
}
try
{
// Get the associated CredentialRequestInfo (will need the URI of the service being accessed)
CredentialRequestInfo requestInfo = _loginTaskCompletionSrc.Task.AsyncState as CredentialRequestInfo;
// Create a token credential using the provided username and password
TokenCredential userCredentials = await AuthenticationManager.Current.GenerateCredentialAsync
(requestInfo.ServiceUri,
e.Username,
e.Password,
requestInfo.GenerateTokenOptions);
// Set the task completion source result with the ArcGIS network credential
// AuthenticationManager is waiting for this result and will add it to its Credentials collection
_loginTaskCompletionSrc.TrySetResult(userCredentials);
}
catch (Exception ex)
{
// Unable to create credential, set the exception on the task completion source
_loginTaskCompletionSrc.TrySetException(ex);
}
finally
{
// Dismiss the login controls
Navigation.PopToRootAsync();
}
}