Binding Grid To Database Fields

My code is all there, but is not showing in the window?

Hello - I learning Xamarin Forms, and want to have an approval grid. I want to query my table and return all results to the grid with a selector for the admin to approve or leave unapproved. I have this code which compiles issue free, but two questions,
1) How do I bind the textbooks to data from my database
2) Do I just need to run a select statement and have the data stored?

<ContentPage.Content>



<Grid.RowDefinitions>

</Grid.RowDefinitions>
<Grid.ColumnDefinitions>




</Grid.ColumnDefinitions>








</ContentPage.Content>