ScriptServiceAttribute Class
Indicates that a Web service can be invoked from script. This class cannot be inherited.
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
'Declaration <AttributeUsageAttribute(AttributeTargets.Class Or AttributeTargets.Interface)> _ <AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level := AspNetHostingPermissionLevel.Minimal)> _ Public NotInheritable Class ScriptServiceAttribute _ Inherits Attribute 'Usage Dim instance As ScriptServiceAttribute
To invoke a Web service method from ECMAScript (JavaScript), you must apply the ScriptServiceAttribute attribute to the related Web service class. When you apply ScriptServiceAttribute to a Web service class definition that contains one or more methods with WebMethodAttribute applied, the proxy generation script creates a proxy object that corresponds to the Web service class.
For more information about using attributes, see Extending Metadata Using Attributes.
The following example demonstrates how to apply ScriptServiceAttribute to the Web service class definition so that its methods can be called from client script.
<%@ WebService Language="VB" Class="SimpleWebService" %> Imports System.Web Imports System.Web.Services Imports System.Web.Services.Protocols Imports System.Web.Script.Services <WebService(Namespace:="http://tempuri.org/")> _ <WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _ <ScriptService()> _ Public Class SimpleWebService Inherits System.Web.Services.WebService <WebMethod()> _ Public Function GetServerTime() As String Dim serverTime As String = _ String.Format("The current time is {0}.", DateTime.Now) Return serverTime End Function End Class
- AspNetHostingPermission
for operating in a hosted environment. Demand value: LinkDemand. Associated enumeration: AspNetHostingPermissionLevel.Minimal
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.