Hi Taqi,
Thank you for being patience.
The following is the sample which demonstrates the paging in virtual grid. Using of the virtual GridControl is the most optimum way to page data into the grid.
In the QueryCellInfo event, it checks for the data availability and loads the data as you scroll over. At the beginning of QueryCellInfo, there is a call to a DataSource method that ensures the requested row is available. Depending on it, the DataSource loads a 200-count range of records with the requested record in the middle.
Sample:
http://www.syncfusion.com/Support/user/uploads/Virtual_Paging_9fc74e34.zipRelevant Forum Thread:
http://www.syncfusion.com/Support/Forums/message.aspx?MessageID=4279Kindly let us know if you need any further assistance.
Have a nice day.
Best regards,
Madhan