What is the correct way and tools to create xsd file for excel?

I have a Sample.xml file
I used visual studio to create a xsd file as follow:
        Dim DS As New Data.DataSet
        DS.ReadXmlSchema("Sample.xml")
        'DT.TableName = "RobotLog"
        DS.WriteXmlSchema("sample.xsd")

I used Sample.xsd to map sample.xml in excel
and then modify the data in excel and then export to a new xml file

I have encountered this error: "cannot save or export xml data. the xml maps in this workbook are not exportable"


The sample:xsd is


<?xml version="1.0" standalone="yes"?>
<xs:schema id="Logs" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
  <xs:element name="Logs" msdata:IsDataSet="true" msdata:UseCurrentLocale="true">
    <xs:complexType>
      <xs:choice minOccurs="0" maxOccurs="unbounded">
        <xs:element name="Log">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="RobotID" type="xs:string" minOccurs="0" />
              <xs:element name="TaskID" type="xs:int" minOccurs="0" />
              <xs:element name="TaskLogicalID" type="xs:int" minOccurs="0" />
              <xs:element name="LogType" type="xs:int" minOccurs="0" />
              <xs:element name="TaskStartTime" type="xs:dateTime" minOccurs="0" />
              <xs:element name="TaskEndTime" type="xs:dateTime" minOccurs="0" />
              <xs:element name="Result" type="xs:string" minOccurs="0" />
              <xs:element name="Details" type="xs:string" minOccurs="0" />
              <xs:element name="Config" type="xs:string" minOccurs="0" />
              <xs:element name="Remark" type="xs:string" minOccurs="0" />
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:choice>
    </xs:complexType>
  </xs:element>
</xs:schema>


If I don't want to edit the xsd in notepad.
What tools and the correct way can I use to create sample.xsd from sample.xml ??


Thanks!

part of Sample.xml

<?xml version="1.0"?>
<!--log file for Task ID: 77022-->
<Logs>
  <Log>
    <RobotID>ROBOT14</RobotID>
    <TaskID>16005</TaskID>
    <TaskLogicalID>16</TaskLogicalID>
    <LogType>6</LogType>
    <TaskStartTime>2010-09-06 23:43:47</TaskStartTime>
    <TaskEndTime>2010-09-06 23:44:02</TaskEndTime>
    <Result>Success</Result>
    <Details>-</Details>
    <Config>-</Config>
    <Remark>SPA#ST1D Group                                     2010-09-06 23:43:47 ~ 2010-09-06 23:44:02 Result: Successful</Remark>
  </Log>
</Logs>

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