UPDATED:
Starting with version 14.2, GridView provides the built-in Search / Find Panel functionality with the capability to locate it outside grid boundaries. This allows accomplishing a similar task with less effort and does not require so much extra code. See the ASP.NET Data Grid: Enhancements post to learn more about this new functionality.
This solution is based on the T135656: GridView - How to highlight / select rows according to search criteria implementation:
Use MVCxGridView.FilterExpression instead of the MVCxGridView.Selection API in order to filter data records according to the specified criteria.
Starting with version 14.2, GridView provides the built-in Search / Find Panel functionality with the capability to locate it outside grid boundaries. This allows accomplishing a similar task with less effort and does not require so much extra code. See the ASP.NET Data Grid: Enhancements post to learn more about this new functionality.
This solution is based on the T135656: GridView - How to highlight / select rows according to search criteria implementation:
Use MVCxGridView.FilterExpression instead of the MVCxGridView.Selection API in order to filter data records according to the specified criteria.