Specifies which HTTP verb is used to invoke a method, and the format of the response. This class cannot be inherited.
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
The attribute is optional. (However, methods that can be called from client script must have the System.Web.Services.WebMethodAttribute attribute applied.). If a method is not marked with , the method will be called by using the HTTP POST command and the response will be serialized as JSON. You cannot override this setting from script.
takes only named parameters. The following are the properties of the class that can be used as named parameters:
Specifies whether the method will be invoked by using the HTTP GET command. The default is false.
Setting the UseHttpGet property to true might pose a security risk for your application if you are working with sensitive data or transactions. In GET requests, the message is encoded by the browser into the URL and is therefore an easier target for tampering. For both GET and POST requests, you should follow security guidelines to protect sensitive data.
Specifies whether the response will be serialized as JSON or as XML. The default is Json. The ResponseFormat property is useful to specify XML as the return type when the method returns an XmlDocument or an XmlElement object.
Specifies whether all return types, including string types, are serialized as XML. The value of the XmlSerializeString property is ignored when the response is serialized as JSON.
For more information about how to use attributes, see Extending Metadata Using Attributes.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
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.