Re: Modifying page output using Session data?
From: Al Cohen (amc79_at_no.junk.please.cornell.edu)
Date: 03/28/04
- Next message: Amy Snyder: "Re: Dreamweaver MX and Visual Studio"
- Previous message: telysium.org: "New Site - Featuring ASP.NET, ADO.NET, and MySQL"
- In reply to: Hugo Wetterberg: "Re: Modifying page output using Session data?"
- Messages sorted by: [ date ] [ thread ]
Date: Sat, 27 Mar 2004 21:48:49 -0500 To: Hugo Wetterberg <hugo@wetterberg.com>
Hugo:
One million thanks!
Not only is this short and sweet, but you already did all of the work
for me!
Best regards,
Al Cohen
Hugo Wetterberg wrote:
> One solution is to override the Render method and pass a html-writer
> based on a memory stream to the base.Render method. Then you only have
> to read the memory stream and replace whatever you want, no problems
> with accessing the session either.
>
> protected override void Render(HtmlTextWriter writer)
> {
> MemoryStream mem=new MemoryStream();
> StreamWriter w=new StreamWriter(mem);
> HtmlTextWriter htmlw=new HtmlTextWriter(w);
>
> base.Render (htmlw);
> htmlw.Flush();
>
> mem.Position=0;
> TextReader reader=new StreamReader(mem);
> string output=reader.ReadToEnd();
>
>
> writer.Write(output.Replace("${user}",(string)Session["username"]));
> }
>
> Cheers
> Hugo
>
> On Sat, 27 Mar 2004 11:20:02 -0500, Al Cohen
> <amc79@no.junk.please.cornell.edu> wrote:
>
>
>>I'm attempting to build a templating engine that will substitute the
>>values of session variables for tags in a page before the page gets sent
>>to the client. For example, the contents of Session["UserName"] would
>>replace each instance of ${UserName} in the page just before the page is
>>returned.
>>
>>In principle, this should be easy to do by hooking into one of the
>>HttpApplication events that occurs after the request handler runs, but
>>I'm having trouble figuring out exactly how. The problem is that to do
>>this, I need to satisfy two conditions:
>>1. I must have access to the Session
>>2. I must be able to manipulate (i.e., random search, delete, and write)
>>the page contents.
>>
>>It looks like I can only manipulate the page contents in a filter
>>attached to HttpResponse.Response; otherwise, I can only append to the
>>Response. (Is this true?)
>>
>>If I can only manipulate the page in a filter, that would be OK, as long
>>as the filter has access to the Session. However, a little
>>experimenting indicates that the Session is gone after
>>PostRequestHandlerExecute occurs, which is before the response filters
>>are executed.
>>
>>So, I seem to be unable to manipulate the entire page and read a session
>>at the same time.
>>
>>Any suggestions would be VERY appreciated!
>>
>>Thanks,
>>
>>Al Cohen
>>www.alcohen.com
>
>
- Next message: Amy Snyder: "Re: Dreamweaver MX and Visual Studio"
- Previous message: telysium.org: "New Site - Featuring ASP.NET, ADO.NET, and MySQL"
- In reply to: Hugo Wetterberg: "Re: Modifying page output using Session data?"
- Messages sorted by: [ date ] [ thread ]
Relevant Pages
|
