WebServiceBindingAttribute Class

Definition

Namespace:

System.Web.Services

Assembly:

System.Web.Services.dll

Declares a binding that defines one or more XML Web service methods. This class cannot be inherited.

public ref class WebServiceBindingAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Interface, AllowMultiple=true)]
public sealed class WebServiceBindingAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Interface, AllowMultiple=true)>]
type WebServiceBindingAttribute = class
    inherit Attribute

Public NotInheritable Class WebServiceBindingAttribute
Inherits Attribute

Inheritance

Object

Attribute

WebServiceBindingAttribute

Attributes

AttributeUsageAttribute

Examples

The following XML Web service implements operations from four bindings. Specifically, the XML Web service declares three bindings it implements operations for, by applying three WebServiceBindingAttribute attributes to the XML Web service.

To specify which binding an XML Web service method is implementing an operation for, a SoapDocumentMethodAttribute is applied to each of the XML Web service methods, except DefaultBindingMethod. By not specifying a binding for DefaultBindingMethod, it is implementing an operation on the default binding for the XML Web service.

<%@ WebService Language="C#" class="BindingSample" %>
 using System;
 using System.Web.Services;
 using System.Web.Services.Protocols;

 // Binding is defined in this XML Web service and uses the default namespace.
 [ WebServiceBinding(Name="LocalBinding")]

 // Binding is defined in this XML Web service, but it is not a part of the default namespace.
 [ WebServiceBinding(Name="LocalBindingNonDefaultNamespace", 
             Namespace="http://www.contoso.com/MyBinding" )]

 // Binding is defined on a remote server, but this XML Web service implements at least one operation in that binding.
 [ WebServiceBinding(Name="RemoteBinding", 
          Namespace="http://www.contoso.com/MyBinding",
          Location="http://www.contoso.com/MySevice.asmx?wsdl")]
 public class BindingSample  {

      [ SoapDocumentMethod(Binding="LocalBinding")]
      [ WebMethod() ]
      public string LocalBindingMethod() {
               return "Member of binding defined in this XML Web service and member of the default namespace";
      }
      [ SoapDocumentMethod(Binding="LocalBindingNonDefaultNamespace")] 
      [ WebMethod() ]
      public string LocalBindingNonDefaultNamespaceMethod() {
              return "Member of binding defined in this XML Web service, but a part of a different namespace";
      }

     [ SoapDocumentMethod(Binding="RemoteBinding")] 
     [ WebMethod() ]
      public string RemoteBindingMethod() {
              return "Member of a binding defined on another server";
      }

      [ WebMethod() ]
      public string DefaultBindingMethod() {
              return "Member of the default binding";
      }
 
 }

<%@ WebService Language="VB" class="BindingSample" %>
Imports System
Imports System.Web.Services
Imports System.Web.Services.Protocols

' Binding is defined in this XML Web service and uses the default namespace.
' Binding is defined in this XML Web service, but it is not a part of the default
' namespace.
' Binding is defined on a remote server, but this XML Web service implements at
' least one operation in that binding.
<WebServiceBinding(Name := "LocalBinding"), _ 
 WebServiceBinding(Name := "LocalBindingNonDefaultNamespace", _ 
                   Namespace := "http://www.contoso.com/MyBinding"), _     
 WebServiceBinding(Name := "RemoteBinding", _ 
                   Namespace := "http://www.contoso.com/MyBinding", _
                   Location := "http://www.contoso.com/MySevice.asmx?wsdl")> _
Public Class BindingSample
    
    <SoapDocumentMethod(Binding := "LocalBinding"), WebMethod()> _
    Public Function LocalBindingMethod() As String
        
        Return "Member of binding defined in this XML Web service and member of the default namespace"
    End Function
    
    <SoapDocumentMethod(Binding := "LocalBindingNonDefaultNamespace"), WebMethod()> _
    Public Function LocalBindingNonDefaultNamespaceMethod() As String
    
        Return "Member o1f binding defined in this XML Web service, but a part of a different namespace"
    End Function    
    
    <SoapDocumentMethod(Binding := "RemoteBinding"), WebMethod()> _
    Public Function RemoteBindingMethod() As String
    
        Return "Member of a binding defined on another server"
    End Function    
    
    <WebMethod()> _
    Public Function DefaultBindingMethod() As String
    
        Return "Member of the default binding"
    End Function
End Class

Remarks

A binding, as defined by Web Services Description Language (WSDL), is similar to an interface, in that it defines a concrete set of operations. Each XML Web service method is an operation within a particular binding. XML Web service methods are members of either the default binding for an XML Web service or a binding specified within a WebServiceBindingAttribute applied to a class implementing an XML Web service. An XML Web service can implement multiple bindings, by applying multiple WebServiceBindingAttribute attributes to an XML Web service.

Once one or more WebServiceAttribute attributes are applied to an XML Web service, a SoapDocumentMethodAttribute or 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 Binding property of SoapDocumentMethodAttribute or SoapRpcMethodAttribute to specify the binding an XML Web service method is implementing an operation for.

Constructors

WebServiceBindingAttribute()	Initializes a new instance of the WebServiceBindingAttribute class.
WebServiceBindingAttribute(String)	Initializes a new instance of the WebServiceBindingAttribute class setting the name of the binding the XML Web service method is implementing.
WebServiceBindingAttribute(String, String)	Initializes a new instance of the WebServiceBindingAttribute class.
WebServiceBindingAttribute(String, String, String)	Initializes a new instance of the WebServiceBindingAttribute class.

Properties

ConformsTo	Gets or sets the Web Services Interoperability (WSI) specification to which the binding claims to conform.
EmitConformanceClaims	Gets or sets a value that indicates whether the binding emits conformance claims.
Location	Gets or sets the location where the binding is defined.
Name	Gets or sets the name of the binding.
Namespace	Gets or sets the namespace associated with the binding.
TypeId	When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute)

Methods

Equals(Object)	Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute)
GetHashCode()	Returns the hash code for this instance. (Inherited from Attribute)
GetType()	Gets the Type of the current instance. (Inherited from Object)
IsDefaultAttribute()	When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute)
Match(Object)	When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

Explicit Interface Implementations

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)	Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)	Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute)
_Attribute.GetTypeInfoCount(UInt32)	Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)	Provides access to properties and methods exposed by an object. (Inherited from Attribute)

See also

• SoapDocumentMethodAttribute
• SoapRpcMethodAttribute