Question

In vb.net or C# web sites

How do I access the final html just before it leaves the server so that I can make a final html tweaks from the code-behind.( I don’t want to use JavaScript to make these adjustments)

Will it be the page PreRenderComplete event that will be the last event that fires that I will be able to see the html that is sent to the browser which I will be able to edit the html with HtmlAgilityPack?

This must be easy to do and possible

Thanks

Answer 1

Hi I just wanted to share what I came up with after reading the responses to my post and doing some searching online and with reference to this forum post here http://forums.asp.net/t/1146098.aspx/1 and using HtmlAggilityPack http://htmlagilitypack.codeplex.com/wikipage?title=Examples

Here is the code

Imports System.IO
Imports HtmlAgilityPack

Partial Class Default2
    Inherits System.Web.UI.Page

    Protected Overrides Sub Render(ByVal writer As HtmlTextWriter)

        Dim mem As New System.IO.MemoryStream()
        Dim twr As New System.IO.StreamWriter(mem)
        Dim myWriter As System.Web.UI.HtmlTextWriter = New HtmlTextWriter(twr)
        MyBase.Render(myWriter)

        myWriter.Flush()
        myWriter.Dispose()

        Dim strmRdr As New System.IO.StreamReader(mem)
        strmRdr.BaseStream.Position = 0
        Dim pageContent As String = strmRdr.ReadToEnd()
        strmRdr.Dispose()
        mem.Dispose()

        writer.Write(AlterWithHTMLAGP(pageContent))


    End Sub



    Function AlterWithHTMLAGP(ByVal pageSource As String) As String

        Dim htmlDoc As HtmlDocument = New HtmlDocument()

        htmlDoc.OptionFixNestedTags = True

        htmlDoc.LoadHtml(pageSource)

        Dim newNode As HtmlNode = HtmlNode.CreateNode("<div>" & "someHtml" & "</div>")

        Dim body As HtmlNode = htmlDoc.DocumentNode.SelectSingleNode("//body")

        body.PrependChild(newNode)


        Return htmlDoc.DocumentNode.WriteTo()

    End Function


End Class