Hi

I have used ASP.NET and Visual Basic for calling web services which I have found very easy. It takes care of building the Soap request to such an extent that it took me a while to capture an example. Here is a request that works for me. Hope it helps you. Jim

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <soap:Body>
    <GridMapRequest xmlns="http://webservices.searchnbn.net/query">
      <TaxonVersionKey>NHMSYS0000875109</TaxonVersionKey>
      <Resolution>_10km</Resolution>
      <GridMapSettings>
        <Background>ViceCounty</Background>
        <GeographicalFilter>
          <BoundingBox minx="110000" miny="525000" maxx="420000" maxy="980000" xmlns="http://webservices.searchnbn.net/data" />
        </GeographicalFilter>
      </GridMapSettings>
    </GridMapRequest>
  </soap:Body>
</soap:Envelope>

Hi Mark,

don't know if you know about this great tool, we use it to test web service calls and much more - we use the free open source version: http://www.soapui.org/

I've spotted your problem.  The schema (http://webservices.searchnbn.net/data) for the BoundingBox definition is missing from your Envelope.  The working request is below.  I've added a reference to the missing schema in the Envelope.  And added its namespace to the BoundingBox tag: '<data:BoundingBox srs=...'.  I hope this helps.

Cheers, Jon

Here's the working request:

<?xml version="1.0" encoding="iso-8859-1"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:nbnq="http://webservices.searchnbn.net/query"
xmlns:data="http://webservices.searchnbn.net/data">
  <SOAP-ENV:Body>
    <GridMapRequest xmlns="http://webservices.searchnbn.net/query" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
      <TaxonVersionKey>NHMSYS0000309499</TaxonVersionKey>
      <Resolution>_2km</Resolution>
      <GridMapSettings>
        <Width>500</Width>
        <Height>500</Height>
        <Grid>Grid_10km</Grid>
        <Background>OSMap</Background>
        <Region>GB</Region>
        <GeographicalFilter>
          <data:BoundingBox srs="EPSG_27700" maxx="520700.0" maxy="281300.0" minx="519700.0" miny="279800.0" />
        </GeographicalFilter>
      </GridMapSettings>
      <Classification>
        <Band border="#FF0000" fill="#FF0000" from="1900"
        to="1970" />
        <Band border="#00FF00" fill="#00FF00" from="1971"
        to="1995" />
        <Band border="#0000FF" fill="#0000FF" from="1996"
        to="2006" />
      </Classification>
      <DatasetList>
        <DatasetKey>GA000144</DatasetKey>
      </DatasetList>
    </GridMapRequest>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>