Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init
Response.Buffer = True
Response.ExpiresAbsolute = DateTime.Now.AddSeconds(-1)
Response.Expires = -1
Response.AddHeader("pragma", "no-cache")
Response.AddHeader("pragma", "no-store")
Response.CacheControl = "no-cache"
End Sub