Find Outlook Contacts from code where FullNAme like "Name"

Writing Outlook 2010 AddIn in c#

How to find contacts where for example FullName like "Name"

First I tried

string filter = "[FullName] = 'Name'";

and it works fine but only for the Name, but now I need to find contacts where FullName can be JonName or Peter Pen or ...

As I uinderstood I should use spacial query string in filter, but what to write?

Outlook.MAPIFolder folderContacts;
Outlook.Items contactItems;
Outlook.ContactItem contact;

folderContacts = Globals.ThisAddIn.Application.ActiveExplorer().Session.
         GetDefaultFolder(Outlook.OlDefaultFolder开发者_Python百科s.olFolderContacts);

contactItems = folderContacts.Items;

string filter = "What should I write here?"; 
var foundContacts = contactItems.Find(filter);

See the documentation.

string filter = "[FullName] ci_startswith  'Name'";

However, I highly recommend that you use the VSTO Power Tools (free download) instead; they will make your life much easier.