XML : how to get data in dataset from xml in c#

This is My XML

  <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="Table1"><xs:complexType><xs:sequence><xs:element name="DepartmentNumber" msdata:ReadOnly="true" msdata:AutoIncrement="true" type="xs:int" /><xs:element name="DepartmentName" minOccurs="0"><xs:simpleType><xs:restriction base="xs:string"><xs:maxLength value="50" /></xs:restriction></xs:simpleType></xs:element></xs:sequence></xs:complexType></xs:element></xs:choice></xs:complexType></xs:element></xs:schema><diffgr:diffgram xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" xmlns:diffgr="urn:schemas-microsoft-com:xml-diffgram-v1"><NewDataSet xmlns=""><Table1 diffgr:id="Table11" msdata:rowOrder="0"><DepartmentNumber>1</DepartmentNumber><DepartmentName>Clothing</DepartmentName></Table1><Table1 diffgr:id="Table12" msdata:rowOrder="1"><DepartmentNumber>2</DepartmentNumber><DepartmentName>Electronics</DepartmentName></Table1><Table1 diffgr:id="Table13" msdata:rowOrder="2"><DepartmentNumber>3</DepartmentNumber><DepartmentName>CellPhones</DepartmentName></Table1></NewDataSet></diffgr:diffgram>