Through out my tutorial we have been talking about Model View ViewModel :
In this tutorial too we will be talking about MVVM approach so the basic idea is to upload the content of the entry to the azure data base.
Step1:
Inisde App.xaml.cs

Step 2:
Views Folder :
OrderPage.xaml

OrderPage.xaml.cs

Step 3:
ViewModel Folder :
OrderViewModel.cs

Step 4:
ApiService.cs

Step 5 :
Models Folder

Output :