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Detecting a page close using GetCallbackEventReference IIS6/IIS7 Issue

Posted By:      Posted Date: September 04, 2010    Points: 0   Category :ASP.Net
I have a popup page that when closed,  initiates a server side function that updates a DB table.  After looking at countless posts, I was able to use the following code (partial) to generate the callback when the window closes. The problem I'm having is that it works great on a server with IIS7, but the event doesn't fire on one with IIS6. Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load    If Not IsPostBack Then        Dim callBackReference As String = Page.ClientScript.GetCallbackEventReference(Me, "arg", "LogOutUser", "", True)        Dim logOutUserCallBackScript As String = "function LogOutUserCallBack(arg, context) { " & callBackReference & "; }"       Me.ClientScript.RegisterClientScriptBlock(Me.GetType(), "LogOutUserCallBack", logOutUserCallBackScript, True)    End If  End Sub      Public Function GetCallbackResult() As String Implements System.Web.UI.ICallbackEventHandler.GetCallbackResult               Return _callBackStatus    End Function     Public Sub RaiseCallbackEvent(ByVal eventA

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