private async void MessageSend_OnClick(object sender, RoutedEventArgs e)
{
MessageProgressBar.Visibility = Visibility.Visible;
var messageManager = new MessageManager();
MessageSend.IsEnabled = false;
ImageSend.IsEnabled = false;
bool result = false;
try
{
if (ImageSource.Source != null)
{
using (IRandomAccessStream stream = await File.OpenAsync(FileAccessMode.ReadWrite))
{
byte[] byteArray = await ImageToBytes(stream);
await
messageManager.CreatePostWithMedia(_messageGroup.MessageGroupId, MessageTextBox.Text, "",
byteArray,
App.UserAccountEntity);
}
}
else
{
result =
await
messageManager.CreatePost(_messageGroup.MessageGroupId, MessageTextBox.Text,
App.UserAccountEntity);
}
MessageProgressBar.Visibility = Visibility.Collapsed;
MessageSend.IsEnabled = true;
ImageSend.IsEnabled = true;
}
catch (Exception)
{
result = false;
}
if (result)
{
ImageSource.Source = null;
MessageTextBox.Text = string.Empty;
_vm.SetMessages(_messageGroup.MessageGroupId, App.UserAccountEntity);
return;
}
const string messageText = "An error has occured. The message has not been sent.";
var msgDlg = new MessageDialog(messageText);
await msgDlg.ShowAsync();
MessageProgressBar.Visibility = Visibility.Collapsed;
MessageSend.IsEnabled = true;
ImageSend.IsEnabled = true;
}
/// <summary>
/// Populates the page with content passed during navigation. Any saved state is also
/// provided when recreating a page from a prior session.
/// </summary>
/// <param name="sender">
/// The source of the event; typically <see cref="NavigationHelper" />
/// </param>
/// <param name="e">
/// Event data that provides both the navigation parameter passed to
/// <see cref="Frame.Navigate(Type, Object)" /> when this page was initially requested and
/// a dictionary of state preserved by this page during an earlier
/// session. The state will be null the first time a page is visited.
/// </param>
private void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
{
_vm = (MessagePageViewModel)DataContext;
if (e.PageState != null && e.PageState.ContainsKey("userEntity") && App.UserAccountEntity == null)
{
string savedStateJson = e.PageState["userAccountEntity"].ToString();
App.UserAccountEntity = JsonConvert.DeserializeObject <UserAccountEntity>(savedStateJson);
savedStateJson = e.PageState["userEntity"].ToString();
_user = JsonConvert.DeserializeObject <UserAccountEntity.User>(savedStateJson);
App.UserAccountEntity.SetUserEntity(_user);
}
var jsonObjectString = (string)e.NavigationParameter;
_messageGroup = JsonConvert.DeserializeObject <MessageGroupEntity.MessageGroup>(jsonObjectString);
_vm.SetMessages(_messageGroup.MessageGroupId, App.UserAccountEntity);
}
private async void MessageSend_OnClick(object sender, RoutedEventArgs e)
{
MessageProgressBar.Visibility = Visibility.Visible;
var messageManager = new MessageManager();
MessageSend.IsEnabled = false;
ImageSend.IsEnabled = false;
bool result;
try
{
result =
await
messageManager.CreatePost(_messageGroup.MessageGroupId, MessageTextBox.Text,
App.UserAccountEntity);
MessageProgressBar.Visibility = Visibility.Collapsed;
MessageSend.IsEnabled = true;
ImageSend.IsEnabled = true;
}
catch (Exception)
{
result = false;
}
if (result)
{
MessageTextBox.Text = string.Empty;
_vm.SetMessages(_messageGroup.MessageGroupId, App.UserAccountEntity);
return;
}
const string messageText = "An error has occured. The message has not been sent.";
var msgDlg = new MessageDialog(messageText);
await msgDlg.ShowAsync();
MessageProgressBar.Visibility = Visibility.Collapsed;
MessageSend.IsEnabled = true;
ImageSend.IsEnabled = true;
}