The property or field 'Title' has not been initialized. It has not been requested or the request has not been executed. It may need to be explicitly requested.

The property or field 'Title' has not been initialized. It has not been requested or the request has not been executed. It may need to be explicitly requested.

Fix:

 Usually we get this error when we try to use a property before calling ExecuteQuery();
I find a similar thread here you must call executeQuery and use the property.

Reference:

http://social.msdn.microsoft.com/Forums/en-US/f0b4955b-56a2-4af4-b55c-f894b7bf2baa/the-property-or-field-has-not-been-initialized-it-has-not-been-requested-or-the-request-has-not?forum=sharepointdevelopmentlegacy

http://social.technet.microsoft.com/Forums/sharepoint/en-US/245bae70-0fd7-4d17-9f40-5489db537d65/exception-in-clientcontext-class-while-try-to-get-sharepoint-object?forum=sharepointdevelopmentprevious