Use Expressions in a Form Template
Learn how to use expressions in form template markup.
Use the AsQueryable Method in an Expression
When you use the AsQueryable attribute in an expression, the query is executed at the database level (rather than in memory).
Execute a Stored Procedure or Service from an Expression
Learn how to execute a stored procedure or a service from an expression.
Use Sub-View Values in Expressions
To use sub-view values in expressions, you add a reference of the sub-view to the form's data model (assuming the sub-view is defined in a separate activity).