dotConnect for QuickBooks Online comes with a Demo Center application. This application demonstrates the main features of dotConnect for QuickBooks Online - execution of SQL statements against QuickBooks Online objects and Information Schema, execution of LINQ to Entities statements, managing local data cache, etc.

This sample can be launched from the Start Menu. By default, you can call it by selecting Demo Center from the Start Menu -> All Programs -> Devart dotConnect for QuickBooks Online -> Samples.

When it starts, you will see the login page. Enter the login information here and click the Proceed button.

The next page is the Home page. Here you can navigate to other sample pages:

Page	Description
SQL-92 support	This page demonstrates execution of SQL statements against QuickBooks Online objects and against the Information Schema, containing the metadata of your QuickBooks Online account. The page contains several predefined queries, and you can modify them or write your own query and test it.
Entity Framework	This page demonstrates execution of LINQ to Entities queries against QuickBooks Online objects. The page contains several predefined queries that you can test.

On any of the pages you may go back to the home page or login page by clicking the corresponding icon in the top left corner of the page.