This documentation is archived and is not being maintained.

GenerateScriptTypeAttribute Class

Specifies that the server type must be generated in the proxy object. This class cannot be inherited.


Namespace:  System.Web.Script.Services
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)

<AttributeUsageAttribute(AttributeTargets.Class Or AttributeTargets.Method Or AttributeTargets.Interface, AllowMultiple := True)> _
Public NotInheritable Class GenerateScriptTypeAttribute _
	Inherits Attribute

The GenerateScriptTypeAttribute type exposes the following members.

Public methodGenerateScriptTypeAttributeInitializes a new instance of the GenerateScriptTypeAttribute class for the specified type.

Public propertyScriptTypeIdGets or sets the type identifier for the type metadata marker.
Public propertyTypeGets the type that is included in the proxy object.
Public propertyTypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)

Public methodEqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodIsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public methodMatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

Explicit interface implemetationPrivate method_Attribute.GetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.InvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)

In AJAX-enabled ASP.NET Web sites, ASP.NET can automatically generate proxy objects for methods of a Web service class. It does this for most top-level types for the input parameters and return values of any Web methods that are marked with ScriptServiceAttribute.

In other cases, if you proxy objects generated for server types, you must apply GenerateScriptTypeAttribute manually. You can apply GenerateScriptTypeAttribute to the Web service itself or to any Web service method or static page method marked with WebMethodAttribute.

In some cases, even if the type corresponds to an input parameter or return value of a Web service method, the proxy will not be generated automatically. In that case, you must use the GenerateScriptTypeAttribute attribute to generate the proxy object for the type. This occurs for generic types and arrays that have more than one argument, such as Dictionary<string,<T>>.

One or more instances of GenerateScriptTypeAttribute can be applied to a Web service class or method. ASP.NET will then generate an ECMAScript (JavaScript) proxy class for each top-level type that is referenced by each declaration of GenerateScriptTypeAttribute.


If you want to generate proxy objects for nested types, you must manually apply GenerateScriptTypeAttribute to each nested type. ASP.NET generates proxies only for top-level types and does not automatically recursively apply the attribute to nested types.

For more information about how to use attributes, see Extending Metadata Using Attributes.

The following example shows how to apply GenerateScriptTypeAttribute to a Web service class and to a Web method. As a result, the ColorObject type and its nested type FavoriteColors are included in the proxy object.

<%@ WebService Language="VB" Class="Samples.AspNet.ColorService" %>

Imports System
Imports System.Web
Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports System.Web.Script.Services

Namespace Samples.AspNet

    <WebService([Namespace]:="")> _
    <WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
    <ScriptService()> _
    <GenerateScriptType(GetType(FavoriteColors))> _
    Public Class ColorService
        Inherits System.Web.Services.WebService

        <GenerateScriptType(GetType(ColorObject), ScriptTypeId:="Color")> _
        <WebMethodAttribute()> _
        Public Function GetDefaultColor() As String()
            ' Instantiate the default color object.
            Dim co As New ColorObject()

            Return co.RGB

        End Function

        <WebMethod()> _
        Public Function EchoFavoriteColor() As String
            ' Instantiate the default color object.
            Dim co As New ColorObject()

            Return co.defaultColor.ToString()

        End Function
    End Class 'EmployeeService

    Public Class ColorObject
        Public rgb() As String = {"00", "00", "FF"}
        Public defaultColor As FavoriteColors = FavoriteColors.Blue
    End Class

    Public Enum FavoriteColors
    End Enum
End Namespace

.NET Framework

Supported in: 4, 3.5

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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