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HttpMethodAttribute.ReturnFormatter Property

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

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

public Type ReturnFormatter { get; set; }

Property Value

Type: System.Type
A Type that deserializes the response from an XML Web service method. There is no default.

If the XML Web service client is invoking an XML Web service method using HTTP-GET, ReturnFormatter must be UrlParameterWriter, whereas a client using HTTP-POST must set ReturnFormatter to HtmlFormParameterWriter.

The example is a proxy class generated by the Wsdl.exe utility for an XML Web service client using HTTP-GET, setting ReturnFormatter to the required value of UrlParameterWriter.

public class MyUser : System.Web.Services.Protocols.HttpGetClientProtocol {

    public MyUser() {
        this.Url = "";

    [System.Web.Services.Protocols.HttpMethodAttribute(typeof(System.Web.Services.Protocols.XmlReturnReader), typeof(System.Web.Services.Protocols.UrlParameterWriter))]
    public UserName GetUserName() {
        return ((UserName)(this.Invoke("GetUserName", (this.Url + "/GetUserName"), new object[0])));

    public System.IAsyncResult BeginGetUserName(System.AsyncCallback callback, object asyncState) {
        return this.BeginInvoke("GetUserName", (this.Url + "/GetUserName"), new object[0], callback, asyncState);

    public UserName EndGetUserName(System.IAsyncResult asyncResult) {
        return ((UserName)(this.EndInvoke(asyncResult)));

[System.Xml.Serialization.XmlRootAttribute(Namespace="", IsNullable=true)]
public class UserName {

    public string Name;

    public string Domain;
[System::Xml::Serialization::XmlRootAttribute(Namespace=S"", IsNullable=true)]
public __gc class UserName {

    String* Name;
    String* Domain;

public __gc class MyUser : public System::Web::Services::Protocols::HttpGetClientProtocol {

    MyUser() {
        this->Url = S"";

    [System::Web::Services::Protocols::HttpMethodAttribute(__typeof(System::Web::Services::Protocols::XmlReturnReader), __typeof(System::Web::Services::Protocols::UrlParameterWriter))]
    UserName* GetUserName() {
        return (dynamic_cast<UserName*>(this->Invoke(S"GetUserName", (String::Concat( this->Url, S"/GetUserName" )), new Object*[0])));

    System::IAsyncResult* BeginGetUserName(System::AsyncCallback* callback, Object* asyncState) {
        return this->BeginInvoke(S"GetUserName", (String::Concat( this->Url, S"/GetUserName" )), new Object*[0], callback, asyncState);

    UserName* EndGetUserName(System::IAsyncResult* asyncResult) {
        return (dynamic_cast<UserName*>(this->EndInvoke(asyncResult)));

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0