The sample demonstrates how to send individual callbacks to the database to perform instant editing of the datatable without switching the grid to Edit mode. The XPO is used for demonstrating purposes only. If the SqlDataSource is used, it will be enough to create corresponding SQL statements and perform partial updating manually.
See Also:
Implement on-demand data posting (batch data update)
How to update a Boolean field using the ASPxCheckBox in a DataItem template
The general technique of using the Init/Load event handler