//--- Required for IEnumerator
          using System.Collections;
          ...
          WordApplication app = new WordApplication();
          Document doc = app.Open(@"c:\myDoc.doc");

          //--- Search a document for social security numbers, or any series of
          //--- nine digits, and remove them. The question mark after each dash
          //--- makes the presence of the dash optional.
          IEnumerator searcherator = doc.Search(@"\d\d\d-?\d\d-?\d\d\d\d").GetEnumerator();
          while (searcherator.MoveNext())
          {
               SearchMatch match = (SearchMatch)searcherator.Current;
               match.Element.DeleteElement();
          }
        

          '--- Required for IEnumerator
          Imports System.Collections
          ...
          Dim app As New WordApplication()
          Dim doc As Document = app.Open("c:\myDoc.doc")

          '--- Search a document for social security numbers, or any series of
          '--- nine digits, and remove them. The question mark after each dash
          '--- makes the presence of the dash optional.
          Dim searcherator As IEnumerator = doc.Search(@"\d\d\d-?\d\d-?\d\d\d\d").GetEnumerator()
          While searcherator.MoveNext()
               Dim match As SearchMatch = searcherator.Current
               match.Element.DeleteElement()
          End While