How to Call a Web Service

The procedure you need to use to call a web service depends upon two things:

whether you are using a contract first or contract last approach to developing the service call. (See Service Development - Contract First or Contract Last.)
whether you need to call the service on a virtualization binding or on a SOAP binding. (See Service Bindings and WSDLs.)

Use the following table to choose the correct procedure to follow.

Service Development	Service Binding	Procedure
Contract first	Virtualization	See Calling a Service on a Virtualization Binding (Contract First) .
Contract first	SOAP	See Calling a Service on a SOAP Binding (Contract First) .
Contract last	Virtualization	See Calling a Service on a Virtualization Binding (Contract Last) .
Contract last	SOAP	See Calling a Service on a SOAP Binding (Contract Last) .