View and Update SharePoint User Profiles from an ASP.NET Page

Resource Page Description
The documentation for the ModifyUserPropertyByAccountName method of the UserProfileService in the SharePoint Server SDK has a bug.

You'll notice that although there are no errors reported the profile doesn't get updated. The fix is quite simple though and is actually present in the other examples. Setting the IsValueChanged to true does the trick.

This example allows you to view the current profile data and make changes by providing the name/value pair through the query string. E.g.

Default.aspx?FirstName=Merill

The idea being that you can change profile data using REST calls.

http://www.merill.net/post/2008/02/Getting-ModifyUserPropertyByAccountName-to-work.aspx