private void HandlePersonsChangedMessage(OperationResultMessage message)
{
switch (message.Operation)
{
case CRUD.Delete:
Contacts.Remove(SelectedContact);
break;
//case CRUD.Update:
// SelectedContact.IsFavorite = SelectedContact.IsFavorite == 1 ? 0 : 1;
// break;
}
}
public async Task DeleteAsync(string id)
{
Models.Contacts SelectedContact = _contacts.Find(a => a.ID == id);
connection.Table <Models.Contacts>().Delete(a => a.ID == id);
_contacts.Remove(SelectedContact);
var message = new OperationResultMessage()
{
Operation = CRUD.Delete
};
Messenger.Default.Send <OperationResultMessage>(message);
await Task.CompletedTask;
}
public async Task UpdateAsync(Models.Contacts contact)
{
string editedContactId = contact.ID;
connection.Table <Models.Contacts>().Delete(a => a.ID == editedContactId);
_contacts.Remove(_contacts.FirstOrDefault(a => a.ID == editedContactId));
_contacts.Add(contact);
connection.Table <Models.Contacts>().Connection.Insert(contact);
var message = new OperationResultMessage()
{
Operation = CRUD.Update
};
Messenger.Default.Send <OperationResultMessage>(message);
await Task.CompletedTask;
}
public async void Run(IBackgroundTaskInstance taskInstance)
{
// Get the task deferral and the app service connection
this.mTaskDeferral = taskInstance.GetDeferral();
AppServiceTriggerDetails triggerDetails =
taskInstance.TriggerDetails as AppServiceTriggerDetails;
this.mAppServiceConnection = triggerDetails.AppServiceConnection;
// Continue processing messages until the GoodBye message is sent
bool continueProcessing = true;
// Before exiting, this method needs to complete the deferral that
// was acquired. Catch all exceptions that may be thrown.
try
{
while (continueProcessing)
{
// Create a next operation message to send to the app
GetNextOperationMessage getNextOperationMessage =
new GetNextOperationMessage(SocialAppContactVersion);
// Send a message to the app
AppServiceResponse response =
await this.mAppServiceConnection.SendMessageAsync(
getNextOperationMessage.Serialize());
if (response == null)
{
throw new InvalidOperationException("A null response was received.");
}
// Check the status
if (response.Status != AppServiceResponseStatus.Success)
{
throw new Exception(String.Format(
"App service response was unsuccessful. Status = {0}",
response.Status));
}
// Parse the response to get the correct message type
ISocialInfoMessage message =
SocialInfoMessageFactory.CreateSocialInfoMessage(response.Message);
// Check the version of the message
// If the version of the message is not the expected version by this agent,
// then there was a protocol change in the People app. You will need to
// contact the People app team at Microsoft to get the most up-to-date
// protocol definition.
if (message.MajorVersion != cSocialAppContactMajorVersion)
{
throw new InvalidOperationException(
"This version of the protocol is not supported.");
}
// Handle the message based on its type
switch (message.OperationType)
{
case OperationType.DownloadContactFeed:
case OperationType.DownloadDashboardFeed:
case OperationType.DownloadHomeFeed:
// Cast the message to an ISocialInfoDownloadFeedMessage
ISocialInfoDownloadFeedMessage downloadFeedMessage =
message as ISocialInfoDownloadFeedMessage;
// Keep track of the operation ID to report it
UInt32 operationId = downloadFeedMessage.OperationId;
// Save the error code associated with the operation
UInt32 errorCode = 0;
try
{
// Download the feed
await downloadFeedMessage.DownloadFeedAsync();
}
catch (Exception exception)
{
errorCode = (UInt32)exception.HResult;
}
// Create the operation result message
OperationResultMessage resultMessage =
new OperationResultMessage(
SocialAppContactVersion,
errorCode,
downloadFeedMessage.OperationId);
// Send the result back to the app
await this.mAppServiceConnection.SendMessageAsync(
resultMessage.Serialize());
break;
case OperationType.GoodBye:
continueProcessing = false;
break;
default:
throw new InvalidOperationException(
"The selected operation type is not supported.");
}
}
}
catch
{
// Throw the exception
throw;
}
finally
{
// Complete the task deferral
this.mTaskDeferral.Complete();
this.mTaskDeferral = null;
this.mAppServiceConnection = null;
}
}
