You can use Ctrl + Z to undo an action in the control. You can then use Ctrl + Y to redo the action you canceled.

You can undo the following types of actions:

• Editing text
• Autofit when double-clicking
• Resizing headers
• Dragging columns or rows with the mouse
• Expanding or collapsing groups with the group button
• Editing the sheet tab name by double-clicking on the tab strip
• Using Ctrl + V to paste
• Using the DoCommand to create a row or column group

The following actions do not respond to Ctrl + Z:

• Sorting or filtering with the drop-down button
• Selecting a range
• Navigating to a specific cell
• Scrolling
• Dragging a split box to create new viewports
• Resizing the tab strip resize box
• Double-clicking the new tab option on the tab strip

You can prevent or allow the undo action in code with the CanUserUndo property.

Using Code

This example sets the CanUserUndo property and creates a group.

private void Grid_Loaded_1(object sender, RoutedEventArgs e)
{
gcSpreadSheet1.CanUserUndo = true;
}
private void Button_Click_1(object sender, RoutedEventArgs e)
{
GrapeCity.Xaml.SpreadSheet.UI.UndoRedo.RowGroupExtent group = new GrapeCity.Xaml.SpreadSheet.UI.UndoRedo.RowGroupExtent(3, 5);
GrapeCity.Xaml.SpreadSheet.UI.UndoRedo.RowGroupUndoAction action = new GrapeCity.Xaml.SpreadSheet.UI.UndoRedo.RowGroupUndoAction(this.gcSpreadSheet1.ActiveSheet, group);
this.gcSpreadSheet1.DoCommand(action);
}

Private Sub MainPage_Loaded(sender As Object, e As RoutedEventArgs) Handles Me.Loaded       
gcSpreadSheet1.CanUserUndo = True 
End Sub
Private Sub Button_Click_1(sender As Object, e As RoutedEventArgs)
Dim group As New GrapeCity.Xaml.SpreadSheet.UI.UndoRedo.RowGroupExtent(3, 5)
Dim action As New GrapeCity.Xaml.SpreadSheet.UI.UndoRedo.RowGroupUndoAction(gcSpreadSheet1.ActiveSheet, group)
gcSpreadSheet1.DoCommand(action)
End Sub