Fires on initial data load and reload in the bound grid control, and when the data grid's sort and filter configuration changes.
Allows you to initialize the data source and (optionally) return an initial batch of records.
when the data grid's sort and filter configuration changes.
The ConfigurationChanged event allows you prepare your data for the load in the grid control, and optionally provide an initial batch of rows. To provide a batch of rows, create a Task that will return requested rows, and assign this task to the RowTask event parameter. To provide subsequent batches of rows (when required), handle the VirtualServerModeSource.MoreRows event.
You can provide an initial and subsequent batches of rows by handling a single event - VirtualServerModeSource.MoreRows. In this case, if you handle the ConfigurationChanged event, leave the event's RowTask parameter set to null.
A Task typically executes asynchronously. To return a batch of rows synchronously, create the task with the Task.FromResult method (available in .NET Framework 4.5+).