// On navigated to event handler
protected override void OnNavigatedTo(NavigationEventArgs e)
{
_event = (Event) e.Parameter;
int[] startDate = ParseDate(_event.StartDate);
int[] endDate = ParseDate(_event.EndDate);
startDatePicker.Date = new DateTimeOffset(new DateTime(startDate[2], startDate[1], startDate[0]));
endDatePicker.Date = new DateTimeOffset(new DateTime(endDate[2], endDate[1], endDate[0]));
base.OnNavigatedTo(e);
}
// Insert event to database, clear all fields
private async void InsertEvent(object sender, RoutedEventArgs e)
{
if(ValidateForm())
{
// Dismiss the save button, show progress ring
SaveButton.Visibility = Visibility.Collapsed;
progressRing.Visibility = Visibility.Visible;
Event _event = new Event()
{
UserId = App.MobileService.CurrentUser.UserId,
Id = Guid.NewGuid().ToString(),
Title = titleTextBox.Text,
Location = locationTextBox.Text,
StartDate = startDatePicker.Date.ToString("dd/MM/yyyy"),
EndDate = endDatePicker.Date.ToString("dd/MM/yyyy"),
Desc = descTextBox.Text,
Category = categoryComboBox.SelectedItem.ToString(),
Fee = Int32.Parse(feeTextBox.Text)
};
// Begin upload process
string errorString = string.Empty;
if (image != null)
{
// Set blob properties of the event
_event.ContainerName = "eventimages";
// Use a unigue GUID to avoid collisions.
_event.ResourceName = Guid.NewGuid().ToString();
}
try
{
await eventTable.InsertAsync(_event);
}
catch (Exception ex)
{
Debug.WriteLine(ex.StackTrace);
MessageDialog msg = new MessageDialog("Problem occured, please retry again");
await msg.ShowAsync();
}
// If we have a returned SAS, then upload the blob
if (!string.IsNullOrEmpty(_event.SasQueryString))
{
// Get the URI generated that contains the SAS
// and extract the storage credentials
StorageCredentials cred = new StorageCredentials(_event.SasQueryString);
var imageUri = new Uri(_event.ImageUri);
// Instantiate a Blob store container based on the info in the returned item
CloudBlobContainer container = new CloudBlobContainer(
new Uri(string.Format("https://{0}/{1}",
imageUri.Host, _event.ContainerName)), cred);
// Get the new image as a stream
using (var inputStream = await image.OpenReadAsync())
{
// Upload the new image as a BLOB from the stream
CloudBlockBlob blobFromSASCredential =
container.GetBlockBlobReference(_event.ResourceName);
await blobFromSASCredential.UploadFromStreamAsync(inputStream);
}
MessageDialog msg = new MessageDialog("The Event is successfully created");
ResetFields();
await msg.ShowAsync();
}
else
{
// Failed to upload image, delete the previously created event
await eventTable.DeleteAsync(_event);
MessageDialog msg = new MessageDialog("Problem occured, please retry again");
await msg.ShowAsync();
}
// Dismiss the progress ring, bring back the save button
SaveButton.Visibility = Visibility.Visible;
progressRing.Visibility = Visibility.Collapsed;
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
_event = (Event) e.Parameter;
base.OnNavigatedTo(e);
}
