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HttpMethodAttribute Class

 

Applying this attribute to an XML Web service client using HTTP-GET or HTTP-POST, sets the types that serialize the parameters sent to an XML Web service method and read the response from the XML Web service method. This class cannot be inherited.

Namespace:   System.Web.Services.Protocols
Assembly:  System.Web.Services (in System.Web.Services.dll)

System.Object
  System.Attribute
    System.Web.Services.Protocols.HttpMethodAttribute

<AttributeUsageAttribute(AttributeTargets.Method)>
Public NotInheritable Class HttpMethodAttribute
	Inherits Attribute

NameDescription
System_CAPS_pubmethodHttpMethodAttribute()

Initializes a new instance of the HttpMethodAttribute class.

System_CAPS_pubmethodHttpMethodAttribute(Type, Type)

Initializes a new instance of the HttpMethodAttribute.

NameDescription
System_CAPS_pubpropertyParameterFormatter

Gets or sets a Type that serializes parameters sent from an XML Web service client to the XML Web service method.

System_CAPS_pubpropertyReturnFormatter

Gets or sets a Type that deserializes the response from an XML Web service method.

System_CAPS_pubpropertyTypeId

When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)

NameDescription
System_CAPS_pubmethodEquals(Object)

This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodGetHashCode()

Returns the hash code for this instance.(Inherited from Attribute.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodIsDefaultAttribute()

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)

System_CAPS_pubmethodMatch(Object)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_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.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfoCount(UInt32)

Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)

If an XML Web service client calls an XML Web service method using HTTP-GET, ReturnFormatter must be set to XmlReturnReader and ParameterFormatter set to UrlParameterWriter. XML Web service clients invoking a XML Web service using HTTP-POST must set ReturnFormatter to XmlReturnReader and ParameterFormatter to HtmlFormParameterWriter.

The following example is a proxy class generated by the Wsdl.exe utility for calling an XML Web service utility using HTTP-POST. The Wsdl.exe automatically supplies the correct types for ReturnFormatter and ParameterFormatter, along with specifying that the proxy class inherits from HttpPostClientProtocol.

Public Class MyUser
    Inherits System.Web.Services.Protocols.HttpPostClientProtocol


    Public Sub New()
        Me.Url = "http://www.contoso.com/username.asmx"
    End Sub 'NewNew

    <HttpMethodAttribute(GetType(XmlReturnReader), GetType(HtmlFormParameterWriter))> _
    Public Function GetUserName() As UserName
        Return CType(Me.Invoke("GetUserName", Me.Url + "/GetUserName", New Object(0) {}), UserName)
    End Function 'GetUserName


    Public Function BeginGetUserName(callback As System.AsyncCallback, asyncState As Object) As System.IAsyncResult
        Return Me.BeginInvoke("GetUserName", Me.Url + "/GetUserName", New Object(0) {}, callback, asyncState)
    End Function 'BeginGetUserName


    Public Function EndGetUserName(asyncResult As System.IAsyncResult) As UserName
        Return CType(Me.EndInvoke(asyncResult), UserName)
    End Function 'EndGetUserName
End Class 'MyUser

<XmlRootAttribute(Namespace := "http://tempuri.org/", IsNullable := True)> _
Public Class UserName
    Public Name As String
    Public Domain As String

End Class 'UserName

.NET Framework
Available since 1.1

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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