How to use XPath to retrieve a node tag rs:data?

y10k · May 5th, 2006, 12:42 PM

I have a XML file:

Code:

<xml xmlns:s='uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882'
    xmlns:dt='uuid:C2F41010-65B3-11d1-A29F-00AA00C14882'
    xmlns:rs='urn:schemas-microsoft-com:rowset'
    xmlns:z='#RowsetSchema'>
<s:Schema id='RowsetSchema'>
    <s:ElementType name='row' content='eltOnly' rs:updatable='true'>
        <s:AttributeType name='PLATE_PK' rs:number='1' rs:maydefer='true' rs:write='true' rs:writeunknown='true'>
            <s:datatype dt:type='int' dt:maxLength='4' rs:precision='0' rs:fixedlength='true'/>
        </s:AttributeType>
        <s:AttributeType name='BARCODE_ID' rs:number='2' rs:nullable='true' rs:maydefer='true' rs:write='true' rs:writeunknown='true'>
            <s:datatype dt:type='string' dt:maxLength='20' rs:precision='0'/>
        </s:AttributeType>
        <s:AttributeType name='INSPECT_NUMBER' rs:number='3' rs:nullable='true' rs:maydefer='true' rs:write='true'
             rs:writeunknown='true'>
            <s:datatype dt:type='i2' dt:maxLength='2' rs:precision='0' rs:fixedlength='true'/>
        </s:AttributeType>
        <s:AttributeType name='PLATE_STATUS' rs:number='4' rs:nullable='true' rs:maydefer='true' rs:write='true' rs:writeunknown='true'>
            <s:datatype dt:type='string' dt:maxLength='20' rs:precision='0'/>
        </s:AttributeType>
        <s:AttributeType name='INSPECT_DATE' rs:number='5' rs:nullable='true' rs:maydefer='true' rs:write='true' rs:writeunknown='true'>
            <s:datatype dt:type='dateTime' rs:dbtype='variantdate' dt:maxLength='16' rs:precision='0' rs:fixedlength='true'/>
        </s:AttributeType>
        <s:AttributeType name='DIR_PATH' rs:number='6' rs:nullable='true' rs:maydefer='true' rs:write='true' rs:writeunknown='true'>
            <s:datatype dt:type='string' dt:maxLength='200' rs:precision='0'/>
        </s:AttributeType>
        <s:AttributeType name='PLATE_IMAGE' rs:number='7' rs:nullable='true' rs:maydefer='true' rs:write='true' rs:writeunknown='true'>
            <s:datatype dt:type='string' dt:maxLength='25' rs:precision='0'/>
        </s:AttributeType>
        <s:AttributeType name='TYPE_ID' rs:number='8' rs:nullable='true' rs:maydefer='true' rs:write='true' rs:writeunknown='true'>
            <s:datatype dt:type='string' dt:maxLength='2' rs:precision='0'/>
        </s:AttributeType>
        <s:AttributeType name='MAX_SCORE' rs:number='9' rs:nullable='true' rs:maydefer='true' rs:write='true' rs:writeunknown='true'>
            <s:datatype dt:type='i2' dt:maxLength='2' rs:precision='0' rs:fixedlength='true'/>
        </s:AttributeType>
        <s:AttributeType name='USER_NAME' rs:number='10' rs:nullable='true' rs:maydefer='true' rs:write='true' rs:writeunknown='true'>
            <s:datatype dt:type='string' dt:maxLength='60' rs:precision='0'/>
        </s:AttributeType>
        <s:AttributeType name='PROPERTIES' rs:number='11' rs:nullable='true' rs:maydefer='true' rs:write='true' rs:writeunknown='true'>
            <s:datatype dt:type='string' dt:maxLength='255' rs:precision='0'/>
        </s:AttributeType>
        <s:AttributeType name='source_key' rs:number='12' rs:write='true'>
            <s:datatype dt:type='int' dt:maxLength='4' rs:precision='0' rs:fixedlength='true' rs:maybenull='false'/>
        </s:AttributeType>
        <s:extends type='rs:rowbase'/>
    </s:ElementType>
</s:Schema>
<rs:data>
    <z:row BARCODE_ID='IB-APY0SQ' INSPECT_NUMBER='4' PLATE_STATUS='Completed' INSPECT_DATE='2006-03-06T23:48:43'
         DIR_PATH='\\sgc-web\Pub\Images\IB-APY0SQ\' PLATE_IMAGE='Thmb_IB-APY0SQ' TYPE_ID='IB' MAX_SCORE='-1' USER_NAME='OPERATOR'
         source_key='0'/>
    <z:row BARCODE_ID='IB-APY0SQ' INSPECT_NUMBER='3' PLATE_STATUS='Completed' INSPECT_DATE='2006-03-01T01:30:09'
         DIR_PATH='\\sgc-web\Pub\Images\IB-APY0SQ\' PLATE_IMAGE='Thmb_IB-APY0SQ' TYPE_ID='IB' MAX_SCORE='-1' USER_NAME='OPERATOR'
         source_key='0'/>
    <z:row BARCODE_ID='IB-APY0SQ' INSPECT_NUMBER='2' PLATE_STATUS='Completed' INSPECT_DATE='2006-02-24T13:46:31'
         DIR_PATH='\\sgc-web\Pub\Images\IB-APY0SQ\' PLATE_IMAGE='Thmb_IB-APY0SQ' TYPE_ID='IB' MAX_SCORE='-1' USER_NAME='OPERATOR'
         source_key='0'/>
    <z:row BARCODE_ID='IB-APY0SQ' INSPECT_NUMBER='1' PLATE_STATUS='Completed' INSPECT_DATE='2006-02-20T10:49:44'
         DIR_PATH='\\sgc-web\Pub\Images\IB-APY0SQ\' PLATE_IMAGE='Thmb_IB-APY0SQ' TYPE_ID='IB' MAX_SCORE='-1' USER_NAME='OPERATOR'
         source_key='0'/>
</rs:data>
</xml>

When I use

Code:

XPathNodeIterator nodes = navigator.Select("//rs:data/z:row");

in C# to obtain the rows, in debugging mode the following error showed up:

Code:

Namespace Manager or XsltContext needed. This query has a prefix, variable, or user-defined function.

How should I modify my program so these can be obtained using XPath?

This is my code:

Code:

        static void ReadXML(String filename)
        {
            XPathDocument document = new XPathDocument(filename);

            XPathNavigator navigator = document.CreateNavigator();
            XPathNodeIterator nodes = navigator.Select("//rs:data/z:row");

            while (nodes.MoveNext()) {
                Console.WriteLine(nodes.Current.Name);
            }
        }

Thanks!

mhkay · May 5th, 2006, 01:11 PM

There's example code for doing this at:

http://discuss.develop.com/archives/...et&D=0&P=96885

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference