Heapar Essential - Version 1.0 Heapar Essential Library allows you to create pretty and powerful user interfaces. The library consists of ActivePanel, Bevel, CategoryButtons, Resizer, HeaparGrid etc. The HeaparGrid is a widely used .NET component. It is possible to enter text directly into the grid cells. The grid control designed to simplify the handling of strings and associated objects. With the HeaparGrid you have full control of data presentation in grid.