Selection Events

There are a number of events relevant to the selection in the RadGridView control. The sequence of the events depends on the SelectionUnit property:

FullRow: The sequence of events is as follows— CurrentCellInfoChanged -> SelectionChanging -> SelectedCellsChanging -> SelectedCellsChanged -> SelectionChanged .
Cell: The sequence of events is as follows— CurrentCellInfoChanged -> SelectedCellsChanging -> SelectedCellsChanged.
Mixed: The sequence of events depends on whether a row or a cell was selected.

The events are fired by RadGridView each time there is a modification of the SelectedItems / SelectedCells collection, regardless of the way it happened (by user input or programmatically).

SelectionChanging

It is fired once a selection is about to be performed and a change in the SelectedItems collection is to be executed. This is the case when a row is to be selected or un-selected and the SelectionUnit is FullRow or Mixed.

Subscribing to the SelectionChanging event

private void SelectionChanging(object sender, SelectionChangingEventArgs e) 
{ 
}

Private Sub SelectionChanging(sender As Object, e As SelectionChangingEventArgs) 
End Sub

SelectionChangingEventArgs exposes the following specific properties:

AddedItems—A collection of the item(s) that has/have been added to the selection.
RemovedItems—A collection of the item(s) that has/have been removed from the selection.
IsCancelable—Gets a value that indicates whether the event is cancelable.
Cancel—A boolean property that cancels the selection.

SelectionChanged

Fires each time there is a change in the SelectedItems collection. This happens when a row has been selected or un-selected and the SelectionUnit is FullRow or Mixed.

Subscribing to the SelectionChanged event

private void SelectionChanged(object sender, SelectionChangeEventArgs e) 
{ 
}

Private Sub SelectionChanged(ByVal sender As Object, ByVal e As SelectionChangeEventArgs) 
End Sub

The SelectionChangeEventArgs class exposes the following specific properties:

AddedItems—A collection of the items that have been added to the selection.
RemovedItems—A collection of the items that have been removed from the selection.

CurrentCellInfoChanged

This event is raised when a cell is selected. It fires before the SelectionChanged event.

Subscribing to the CurrentCellInfoChanged event

private void CurrentCellInfoChanged(object sender, GridViewCurrentCellInfoChangedEventArgs e) 
{ 
}

Private Sub CurrentCellInfoChanged(ByVal sender As Object, ByVal e As GridViewCurrentCellInfoChangedEventArgs) 
End Sub

The GridViewCurrentCellInfoChangedEventArgs class exposes the following specific properties:

NewCellInfo—The new cell info.
OldCellInfo—The old cell info.

SelectedCellsChanging

This event is fired when a change in the SelectedCells collection is about to be performed. This happens when a cell is to be selected or un-selected when the SelectionUnit is Cell or Mixed.

Subscribing to the SelectedCellsChanging event

private void SelectedCellsChanging(object sender, GridViewSelectedCellsChangingEventArgs e) 
{ 
}

Private Sub SelectedCellsChanging(sender As Object, e As GridViewSelectedCellsChangingEventArgs) 
End Sub

The GridViewSelectedCellsChangingEventArgs class exposes the following specific properties:

AddedCells—A collection of the cells that have been added to the selection.
RemovedCells—A collection of the cells that have been removed from the selection.
IsCancelable—Gets a value that indicates whether the event is cancelable.
Cancel—A boolean property that cancels the cell selection.

SelectedCellsChanged

Fires each time there is change in the SelectedCells collection. This happens when a cell has been selected or un-selected when the SelectionUnit is Cell.

Subscribing to the SelectedCellsChanged event

private void SelectedCellsChanged(object sender, GridViewSelectedCellsChangedEventArgs e) 
{ 
}

Private Sub SelectedCellsChanged(sender As Object, e As GridViewSelectedCellsChangedEventArgs) 
End Sub

The GridViewSelectedCellsChangedEventArgs class exposes the following specific properties:

AddedCells—A collection of the cells that have been added to the selection.
RemovedCells—A collection of the cells that have been removed from the selection.