How to Redo and Undo
You can use CPDFViewer
's UndoManager
class to redo and undo. The following code will show you how to do this.
if (viewer.UndoManager.CanUndo)
{
viewer.UndoManager.Undo();
}
if (viewer.UndoManager.CanRedo)
{
viewer.UndoManager.Redo();
}