async Task AddContractorCommandAct()
{
// prevent empty name
if (ContractorName.Length == 0)
{
MessagingCenter.Send(this, "emptyContractor");
return;
}
// prevend same name
for (int i = 0, len = ExistContractorList.Count; i < len; ++i)
{
if (ContractorName.Equals(ExistContractorList[i]))
{
MessagingCenter.Send(this, "duplicateContractor");
return;
}
}
if (IsBusy)
{
return;
}
IsBusy = true;
var isSucceed = await _taskService.AddNewContractor(ContractorName);
IsBusy = false;
if (isSucceed)
{
MessagingCenter.Send <AddContractorViewModel, String>(this, "AddContractor", ContractorName);
await Navigation.PopAsync();
}
else
{
MessagingCenter.Send(this, "AddContractorFailed");
}
}
