InfoPath Dev

How to Load an InfoPath Form (.XML) which is inside a Form Library into XmlDocument in .Net Console Application. XmlDocument.Load(''http://localhost:8090/sites/test/FormLibrary_1/test.xml''); Am getting an error ''The remote server returned an error: (401) Unauthorized.''

Is it possible to fire an event while opening an document inside a document library. in SPListEvent there are only update, delete and insert etc.. but not finding an event to fire while opening a document

I have an infopath form. on submit am submiting to a folder in sharepoint at the same time am trigerring an even in sharepoint when any forms getting inserted to that folder while trigerring events in sharepoint am getting the following error ''The document you are attempting to edit is locked and cannot be updated. It may be in use by another ...

I have published my infopath form in sharepoint form library. when ever i open my infopath form from sharepoint it asks for login, even though i logged in sharepoint. can this be controled using single sign-on or anything else?