字段值为空的XML文件如何导入DATAWINDOW

有这样一段由.net生成的xml(由dataset转化而来):

<NewDataSet> <xs:schema id="NewDataSet" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata"> <xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:UseCurrentLocale="true"> <xs:complexType> <xs:choice minOccurs="0" maxOccurs="unbounded"> <xs:element name="Table"> <xs:complexType> <xs:sequence> <xs:element name="ica015_un" type="xs:int" minOccurs="0" /> <xs:element name="ica000_un" type="xs:int" minOccurs="0" /> <xs:element name="cardno" type="xs:string" minOccurs="0" /> <xs:element name="vipno" type="xs:string" minOccurs="0" /> <xs:element name="ctype" type="xs:string" minOccurs="0" /> <xs:element name="state" type="xs:string" minOccurs="0" /> <xs:element name="amt" type="xs:decimal" minOccurs="0" /> <xs:element name="enddate" type="xs:string" minOccurs="0" /> <xs:element name="venddate" type="xs:string" minOccurs="0" /> <xs:element name="lstate" type="xs:string" minOccur