/// <summary>
/// This is called upon the register button being pressed.
/// </summary>
/// <param name="sender">The object that caused this event.</param>
/// <param name="e">The event arguments.</param>
protected async void BtnRegister_Click(object sender, EventArgs e)
{
// This event is only ever called after the client-side JavaScript returns true. So that means that the information is, up to this point, valid.
// First, let's see if the user passed the Google reCAPTCHA test.
if (CaptchaPass())
{
// If they passed, we get to try and register them for an event!
try
{
// All of this is already on the EventRegistrationPage of the mobile application, but I'll explain it here for fun.
RestClient client = new RestClient(); // Object that calls the API.
Models.User user = await client.GetUser(username); // Getting the user from the username field.
// Making a new event registration model.
Models.EventRegistration eventRegistration = new Models.EventRegistration()
{
EventId = (int)(eventView.DataSource as DataTable).Rows[eventView.PageIndex]["eventId"],
Guests = guests,
UserId = user.UserId
};
// Getting the event from the current page.
Models.Event @event = (eventView.DataSource as DataTable).Rows[eventView.PageIndex]["event"] as Models.Event;
// Re-check to ensure that we can sign-up for this event still.
if (@event.CurrentAttendees >= @event.MaxAttendees)
{
throw new InvalidOperationException("Maximum reached!");
}
// Actually create the registration record in the database.
await client.CreateRegistration(eventRegistration);
// If they are volunteering they do not count against the event's maximum attendees. Otherwise, they will.
if (!(eventView.FindControl("chkVolunteering") as CheckBox).Checked)
{
@event.CurrentAttendees += eventRegistration.Guests + 1; // Add the user and their guests to the event.
await client.UpdateEvent(@event.EventId, @event); // Update the event record in the database.
}
// Show the user an alert signifying that they succeeded in the registration.
eventView.Page.ClientScript.RegisterStartupScript(GetType(), "Success", "alert('Registration successful!');", true);
// Re-call the API to populate the event view here.
eventsSingleton.Restart();
eventsSingleton = EventsSingleton.Instance;
// Re-bind the event data.
LoadData();
}
catch (Refit.ApiException) // No username found.
{
eventView.Page.ClientScript.RegisterStartupScript(GetType(), "NoUsernameFound", "alert('Error - No user exists with that username. Try again or download the Pine Grove App to become a member!');", true);
}
catch (InvalidOperationException) // The event was already filled.
{
eventView.Page.ClientScript.RegisterStartupScript(GetType(), "EventFull", "alert('Error - The event became full prior to form submission!');", true);
}
}
// The user failed the reCAPTCHA.
else
{
eventView.Page.ClientScript.RegisterStartupScript(GetType(), "Failure", "alert('Error - Failed reCAPTCHA Response.');", true);
}
}
/// <summary>
/// This is called every time the page is loaded, including post-backs.
/// </summary>
/// <param name="sender">The object that caused this event.</param>
/// <param name="e">The event arguments.</param>
protected void Page_Load(object sender, EventArgs e)
{
eventsSingleton = EventsSingleton.Instance; // If there is no instance, one is created. If there is one, it sets it to the one that has already been created.
LoadData(); // This get's the data from the events singleton.
}
