dotConnect for QuickBooks Online goes with three sample projects for both C# and Visual Basic. They demonstrate working with dotConnect for QuickBooks Online classes, components, and technologies. You can use the Devart dotConnect for QuickBooks Online Start menu group to open samples in the language you prefer.

Sample	Description
ConsoleDemo	This sample project demonstrates using dotConnect for QuickBooks Online in console applications. It shows how to get QuickBooks Online data with QuickBooksDataReader and QuickBooksDataAdapter components, how to access QuickBooks Online metadata via INFORMATION SCHEMA tables. As the connection string parameters are hardcoded in this sample, you need to replace sample user name, password, and security token with your actual QuickBooks Online user account login parameters before running the sample.
WebFormsDemo	This sample project demonstrates using dotConnect for QuickBooks Online in web projects. It allows you to edit data of the QuickBooks Online table. You can view, add, delete, update records.
WinFormsDemo	This sample project demonstrates working with QuickBooks Online data in a Windows Forms application. It allows you to edit data of the QuickBooks Online table. You can view, add, delete, update records.