You can then use the RichTextBox.Redo method to reapply the last undo operation to the control. The RichTextBox.CanRedo method enables you to determine whether the last operation the user has undone can be reapplied to the control.
Requirements
Namespace: System.Windows.Forms Assembly: System.Windows.Forms (in System.Windows.Forms.dll) Assembly Versions: 1.0.5000.0, 2.0.0.0