SpreadsheetGear 2023
Undo Method (Command)

SpreadsheetGear.Commands Namespace > Command Class : Undo Method
Called by the command manager to undo this command.
Protected Overridable Function Undo() As System.Boolean
Dim instance As Command
Dim value As System.Boolean
value = instance.Undo()
protected virtual System.bool Undo()

Commands are owned by Command.CommandManager and will be disposed of after being executed if they are not undoable. Undoable commands will be disposed of when they are no longer undoable or redoable.


Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also


Command Class
Command Members