Find, Find Next and Replace functionality

Hi.  I am new to SharpDevelop and would like to know the best way to achieve find and replace functionality in the TextAreaControl?  I've looked at the source and that there is a SearchAndReplace namespace, but when I try to use the SearchAndReplaceDialog I end up with a circular control reference.  Could someone explain the best practices for implementing a search and replace feature?  Or for using the SearchAndReplace AddIn?

Thanks in advance!