Events Between Web Forms

Public Partial Class AjaxCallBack
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        'the script manager
        Dim objScriptManager As ScriptManager = ScriptManager.GetCurrent(Me.Page)

        'Set up the Reference
        Dim TestWS As ServiceReference = New ServiceReference
        TestWS.Path = "~/WSUsers.asmx"

        'Add the WS reference  to the script manager
        objScriptManager.Services.Add(TestWS)

    End Sub

End Class