How to change page in c# (CorelDRAW.Application)

I'm new in c# and in Corel.  I try to use .PageChange commend. Maybe can i change page by name?. I have 22 pages in document.

CorelDRAW.Application cdr = new CorelDRAW.Application();
cdr.Visible = false;
cdr.OpenDocument(@"C:\software\Corel\xxxx.cdr");
cdr.ActiveDocument.Activate();
cdr.ActiveDocument.PageChange += ???
MessageBox.Show(cdr.ActivePage.Name);