Add url parameter to css file in asp themes folder

Question

I have written a bit of code that helps with versioning of js files. Essentially it spins around the current script manager and appends the javascript file path with an md5

Answer 1

I am facing one issue that it is repeating css entry in html markup on every postback. for example, I have newabc.css. the code will change it to newabc.css?v=1. if I see html source after 5 postback, it will have 5 "newabc.css?v=1". so I added link.EnableViewState = False, it works fine but is it actually needed?

    Dim link As HtmlLink = Nothing

    For Each c As Control In Page.Header.Controls
        If TypeOf c Is HtmlLink Then
            link = TryCast(c, HtmlLink)

            If link.Href.IndexOf("App_Themes/", StringComparison.InvariantCultureIgnoreCase) >= 0 AndAlso link.Href.EndsWith(".css", StringComparison.InvariantCultureIgnoreCase) Then
                link.Href &= "?v=" & VER_CSS
                'link.EnableViewState = False
            End If
        End If
    Next