Crystal Report XML Web Service

[Li Pang]

Hi,

The following codes are used to define a web method which returns a crystal
report document in a file named "Service1.asmx" . When I right-click on "View
in Browser" I got the error
---------------------------------------------------------------------------------
Cannot serialize member System.Componen tModel.Componen t.Site of type
System.Componen tModel.ISite because it is an interface.
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information about
the error and where it originated in the code.

Exception Details: System.NotSuppo rtedException: Cannot serialize member
System.Componen tModel.Componen t.Site of type System.Componen tModel.ISite
because it is an interface.

Source Error:

An unhandled exception was generated during the execution of the current web
request. Information regarding the origin and location of the exception can
be identified using the exception stack trace below.
---------------------------------------------------------------------------------------

Anybody could give some suggestions on this issue?

thanks in advance

Service1.asmx:
Imports System.Web.Serv ices
Imports CrystalDecision s.CrystalReport s.Engine
Imports CrystalDecision s.Shared
Imports CrystalDecision s.ReportSource

<System.Web.Ser vices.WebServic e(Namespace :=
"http://tempuri.org/xmlWebSrv/Service1")> _
Public Class Service1
Inherits System.Web.Serv ices.WebService

#Region " Web Services Designer Generated Code "

Public Sub New()
MyBase.New()

'This call is required by the Web Services Designer.
InitializeCompo nent()

'Add your own initialization code after the InitializeCompo nent() call

End Sub

'Required by the Web Services Designer
Private components As System.Componen tModel.IContain er

'NOTE: The following procedure is required by the Web Services Designer
'It can be modified using the Web Services Designer.
'Do not modify it using the code editor.
<System.Diagnos tics.DebuggerSt epThrough()> Private Sub
InitializeCompo nent()
components = New System.Componen tModel.Containe r()
End Sub

Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
'CODEGEN: This procedure is required by the Web Services Designer
'Do not modify it using the code editor.
If disposing Then
If Not (components Is Nothing) Then
components.Disp ose()
End If
End If
MyBase.Dispose( disposing)
End Sub

#End Region

<WebMethod()> Public Function GetReportDoc() As
CrystalDecision s.CrystalReport s.Engine.Report Document
Dim crReportDocumen t As
CrystalDecision s.CrystalReport s.Engine.Report Document
Return crReportDocumen t
End Function
End Class