private async Task LogIn(string permissions = null)
{
try
{
this.SessionStateChanged.RaiseEvent(this, new SessionStateChangedEventArgs(FacebookSessionState.Opening));
// TODO: using Permissions for the time being until we decide how
// to handle separate ReadPermissions and PublishPermissions
var session = await this.facebookSessionClient.LoginAsync(permissions ?? this.Permissions);
// initialize current session
this.CurrentSession = session;
this.SessionStateChanged.RaiseEvent(this, new SessionStateChangedEventArgs(FacebookSessionState.Opened));
// retrieve information about the current user
if (this.FetchUserInfo)
{
FacebookClient client = new FacebookClient(session.AccessToken);
dynamic result = await client.GetTaskAsync("me");
this.CurrentUser = new GraphUser(result);
var userInfo = new UserInfoChangedEventArgs(this.CurrentUser);
this.UserInfoChanged.RaiseEvent(this, userInfo);
}
}
catch (ArgumentNullException error)
{
// TODO: remove when bug in SDK is fixed (the bug happens when you cancel the facebook login dialog)
var authenticationErrorEventArgs =
new AuthenticationErrorEventArgs("Login failure.", error.Message);
this.AuthenticationError.RaiseEvent(this, authenticationErrorEventArgs);
}
catch (InvalidOperationException error)
{
// TODO: need to obtain richer information than a generic InvalidOperationException
var authenticationErrorEventArgs =
new AuthenticationErrorEventArgs("Login failure.", error.Message);
this.AuthenticationError.RaiseEvent(this, authenticationErrorEventArgs);
}
catch (FacebookOAuthException error)
{
var authenticationErrorEventArgs =
new AuthenticationErrorEventArgs("Login failure.", error.Message);
this.AuthenticationError.RaiseEvent(this, authenticationErrorEventArgs);
}
}
private void OnUserInfoChanged(object sender, Facebook.Client.Controls.UserInfoChangedEventArgs e)
{
this.userInfo.DataContext = e.User;
}
private async Task LogIn(string permissions = null)
{
try
{
this.SessionStateChanged.RaiseEvent(this, new SessionStateChangedEventArgs(FacebookSessionState.Opening));
// TODO: using Permissions for the time being until we decide how
// to handle separate ReadPermissions and PublishPermissions
var session = await this.facebookSessionClient.LoginAsync(permissions ?? this.Permissions);
// initialize current session
this.CurrentSession = session;
this.SessionStateChanged.RaiseEvent(this, new SessionStateChangedEventArgs(FacebookSessionState.Opened));
// retrieve information about the current user
if (this.FetchUserInfo)
{
FacebookClient client = new FacebookClient(session.AccessToken);
dynamic result = await client.GetTaskAsync("me");
this.CurrentUser = new GraphUser(result);
var userInfo = new UserInfoChangedEventArgs(this.CurrentUser);
this.UserInfoChanged.RaiseEvent(this, userInfo);
}
}
catch (ArgumentNullException error)
{
// TODO: remove when bug in SDK is fixed (the bug happens when you cancel the facebook login dialog)
var authenticationErrorEventArgs =
new AuthenticationErrorEventArgs("Login failure.", error.Message);
this.AuthenticationError.RaiseEvent(this, authenticationErrorEventArgs);
}
catch (InvalidOperationException error)
{
// TODO: need to obtain richer information than a generic InvalidOperationException
var authenticationErrorEventArgs =
new AuthenticationErrorEventArgs("Login failure.", error.Message);
this.AuthenticationError.RaiseEvent(this, authenticationErrorEventArgs);
}
catch (FacebookOAuthException error)
{
var authenticationErrorEventArgs =
new AuthenticationErrorEventArgs("Login failure.", error.Message);
this.AuthenticationError.RaiseEvent(this, authenticationErrorEventArgs);
}
}