Thanks for your response, As I said in my previous post

DeleteAllAttachments, causes this error to be fire, the file is still being handle by the .net engine while is been tried to be deleted.

Error Message: The process cannot access the file ….\Data\Temp\persisted.671ddb4d-cfde-4c9c-be46-e1f52e85bdf5.516lOL-e1KL._SS500_.jpg.resx' because it is being used by another process.

I need just a way to clean the item collection to be able to present the user with a form ready to accept new information.