Reading XML into Datatable gives incorrect DateTime when the time has Time Zone info

So my client runs some code that writes their current time to an xml file which I then want to read back into a data table but I am getting incorrect time information.

For example their current time is 09:31 their time zone is UTC+1:00 .

my code is:

var ds = new DataSet("MyDataSet");
var dt = ds.Tables.Add("MyDataTable");
dt.Columns.Add("MyDateTime", typeof(DateTime));

var startingDateTime = DateTime.Now;
dt.Rows.Add(startingDateTime);
String xmlDT = String.Empty;

using (MemoryStream memoryStream = new MemoryStream())
{
    dt.WriteXml(memoryStream,XmlWriteMode.WriteSchema);
    xmlDT = Encoding.UTF8.GetString(memoryStream.ToArray());
}
string myFile = @"C:\Users\me\Documents\test1.txt"
XmlDocument doc = new XmlDocument();
doc.LoadXml(xmlDT);
doc.Save(myFile);

myFile now contains:

<NewDataSet>
  <xs:schema id="NewDataSet" xmlns="" xmlns:xs="http://ift.tt/tphNwY" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
    <xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:MainDataTable="MyDataTable" msdata:UseCurrentLocale="true">
      <xs:complexType>
        <xs:choice minOccurs="0" maxOccurs="unbounded">
          <xs:element name="MyDataTable">
            <xs:complexType>
              <xs:sequence>
                <xs:element name="MyDateTime" type="xs:dateTime" minOccurs="0" />
              </xs:sequence>
            </xs:complexType>
          </xs:element>
        </xs:choice>
      </xs:complexType>
    </xs:element>
  </xs:schema>
  <MyDataTable>
    <MyDateTime>2015-02-12T09:31:37.4250365+01:00</MyDateTime>
  </MyDataTable>
</NewDataSet>

This file is then sent to my server in the UK (+00:00) where I then read the file using:

DataTable datatable2 = new DataTable();
datatable2.ReadXml(myFile);

and my datatable now contains 1 row that has a datetime of 08:30 but this is incorrect and I would like it to store the clients time. How would I do this with a change to either my client or server code?