Soap attributes question

hello,

how can write a webservice method with attribute?

like this xml :

<soap:Envelope
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<CalcArea xmlns="http://example.org/geometry/" unite="radian"
floor="3">
<length>2.3</length>
<width>1.2</width>
</CalcArea>
</soap:Body>
</soap:Envelope>

What is the cs class / method for corresponding with this soap call?
(with "unite" and "floor" attribute)

thanks

 
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