How to display my session in a javascript alertbox thats called behind code (visual basic)

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VB

Javascript

HTML5

Hey there, so i have a list of strings stored in a session (1 big list of names)
i would like to display these names in a javascript alertbox. i tried simple 'hello' and it worked. but then when i try to pass my session, the alert box does not display.

my code is below. please help guys thanks so much.



1.SESSION CONTAINS A LIST OF NAMES AS A STRING - POPULATED WITH ADIO.NET FROM SQL SERVER

2.BEHIND CODE

protected Sub ShowMessage(sender As Object, e As EventArgs)

        'test works
        ' Dim message As String = "alert('test')"

        Dim message As String = "alert('" + Session("linkedSP").ToString() + "')"
        ScriptManager.RegisterClientScriptBlock(TryCast(sender, Control), Me.GetType(), "alert", message, True)
    End Sub

3.HTML

<pre>  <asp:ImageButton ID="imbtnview" Width="20px" ToolTip="View service providers already linked to this user" ImageUrl="~/images/view.png" runat="server" OnClick="ShowMessage"/>

What I have tried:

  Page.ClientScript.RegisterStartupScript(Me.GetType(), "alert", "showAlert(" + Session("linkedSP").ToString() + ");", True)

dim message = 'Alert(" + Session("linkedSP").ToString() + ")'



ScriptManager.RegisterClientScriptBlock(TryCast(sender, Control), Me.GetType(), "alert", message, True)