A binding, as defined by Web Services Description Language (WSDL), is similar to an interface in that it defines a concrete set of operations. With respect to ASP.NET, each XML Web service method is an operation within a binding. XML Web service methods are members of the default binding for an XML Web service or a binding specified within a System.Web.Services.WebServiceBindingAttribute applied to an XML Web service. An XML Web service can implement multiple bindings, if multiple System.Web.Services.WebServiceBindingAttribute attributes are applied to an XML Web service.

Once one or more System.Web.Services.WebServiceBindingAttribute attributes are applied to an XML Web service, a System.Web.Services.Protocols.SoapDocumentMethodAttribute or System.Web.Services.Protocols.SoapRpcMethodAttribute can be applied to individual XML Web service methods to indicate the binding operation implemented by a particular XML Web service method. Set the SoapDocumentMethodAttribute.Binding property of System.Web.Services.Protocols.SoapDocumentMethodAttribute or System.Web.Services.Protocols.SoapRpcMethodAttribute to specify the binding an XML Web service method implements an operation for. Only one System.Web.Services.Protocols.SoapDocumentMethodAttribute or System.Web.Services.Protocols.SoapRpcMethodAttribute can be applied to an XML Web service method. Therefore, an XML Web service method can only implement an operation for one binding.

Namespace: System.Web.Services.Protocols
Assembly: System.Web.Services (in System.Web.Services.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0