How to digitally sign soap request using visual studio 2008

I'm using a web reference generated fr开发者_如何转开发om a .wsdl file. I've also examined the Amazon web service example but couldn't get it working. Enclosed is an example of the soap request.

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Header>
<wsse:Security
xmlns:wsse="http://schemas.xmlsoap.org/ws/2002/07/secext">
<wsse:BinarySecurityToken valueType="wsse:X509v3"
encodingType="wsse:Base64Binary" id="X509Token">
MIIEZzCcA9cgwaABQfd86afd2g...
</wsse:BinarySecurityToken>
<ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
<ds:SignedInfo>
<ds:CanonicalizationMethod>
Algorithm="http://www.w3.org/2001/10/xml-enc-c14n#"/>
</ds:CanonicalizationMethod>
<ds:SignatureMethod Algorithm="
http://www.w3.org/2000/09/xmldsig#rsa-sha1"/>
<ds:Reference URI="#MsgBody">
<ds:Transforms>
<ds:Transform
Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
</ds:Transforms>
<ds:DigestMethod
Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
<ds:DigestValue>DJbchm5gk...</ds:DigestValue>
</ds:Reference>
</ds:SignedInfo>
<ds:SignatureValue>LyLsF0pi4wPu...</ds:SignatureValue>
<ds:KeyInfo>
<wsse:SecurityTokenReference>
<wsse:Reference URI="#X509Token"/>
</wsse:SecurityTokenReference>
</ds:KeyInfo>
</ds:Signature>
</wsse:Security>
</soap:Header>

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What language are you using? If it's in .NET, you can use the AWS SDK for .NET provided by Amazon, which takes out all of the pain of implementing the WSDL yourself.