async void Button_AddNewTravel(object sender, EventArgs e)
{
await Navigation.PushAsync(new AddTravelData(LicensePlateNumber));
MessagingCenter.Subscribe <AddTravelData, Travel>(this, "DatabaseOperationSucceeded", (_sender, travel) =>
{
TravelList.Add(travel);
TravelList = SortListByTravelDateDesc(TravelList);
Travels.ItemsSource = TravelList;
MessagingCenter.Unsubscribe <AddTravelData, Travel>(this, "DatabaseOperationSucceeded");
});
}
internal async void CreateTravel()
{
ErrorMessage = "";
if (NewTravelName == "")
{
ErrorMessage = "Travel's name can't be empty";
}
else if (NewTravelsStartDate.Date == null || NewTravelsEndDate.Date == null)
{
ErrorMessage = "Please select a start date and an end date";
}
else if (NameOfTravelIsInUse())
{
ErrorMessage = "That travel name is already in use";
}
else if (NewTravelsStartDate.Date > NewTravelsEndDate.Date)
{
ErrorMessage = "Start date can't be greater than end date";
}
else
{
Travel newTravel = new Travel()
{
Name = NewTravelName, Start = NewTravelsStartDate.Date, End = NewTravelsEndDate.Date
};
var values = new Dictionary <string, string>
{
{ "Name", NewTravelName },
{ "Start", NewTravelsStartDate.Date.ToString() },
{ "End", NewTravelsEndDate.Date.ToString() }
};
var content = new FormUrlEncodedContent(values);
var result = await Client.HttpClient.PostAsync("http://localhost:65177/api/Travel", content);
if (result.StatusCode == HttpStatusCode.OK)
{
TravelList.Add(newTravel);
}
}
}
