c# - XML serialization error on Universal Store App -

c# - XML serialization error on Universal Store App -

on universal app project i'm trying deserialize xml file, in windows version works fine in windows phone ran next error:

{system.invalidoperationexception: global::app.data.dataitem cannot serialized because not have parameterless constructor. @ microsoft.xml.serialization.generatedassembly.xmlserializationreaderlist1.read2_dataitem (boolean isnullable, boolean checktype) @ microsoft.xml.serialization.generatedassembly.xmlserializationreaderlist1.read3_arrayofdataitem()}

how can solve this? code: [link]

c# xml windows-phone-8 serialization