VB online reference for programming your Betfair API-NG application.

Visual Basic is the most productive tool for rapidly creating a wide range of Windows, Web, Mobile, and Office applications built on the .NET Framework. The Visual Basic language is designed to be human readable and accessible to everyone from novice programmers to advanced programmers. 

Learn more about VB here or here. E.g. DataSet, DataTable, DataView, Datagrid and etc.