I want to develop my own Dat Grid View for Win Form : <p>i want to develop my own data grid for Win From from scratch.
Data grid with features like 
Grouping 
sorting
filtering 
adding text row 
adding subtotal in between rows</p>

<p>I have tried using custom control but it becomes too slow when i add grouping and sorting and designing features</p>

<p>Now i am finding a way to design my own control.
In which basic language the win form controls are made.
like telerik dev express ? in which language these controls are made?</p>
