ASP.NET Response Filter to Reformat the rendered output of ASPX pages?
- by PropellerHead
I've created a simple HttpModule and response stream to reformat the rendered output of web pages (see code snippets below).
In the HttpModule I set the Response.Filter to my PageStream:
m_Application.Context.Response.Filter = new PageStream(m_Application.Context);
In the PageStream I overwrite the Write method in order to do my reformatting of the rendered output:
public override void Write(byte[] buffer, int offset, int count)
{
string html = System.Text.Encoding.UTF8.GetString(buffer);
//Do some string resplace operations here...
byte[] input = System.Text.Encoding.UTF8.GetBytes(html);
m_DefaultStream.Write(input, 0, input.Length);
}
And this work fine when using it on simple HTML pages (.html), but when I use this method on ASPX pages (.aspx), the Write method is called several times, splitting up the reformatting into different steps, and potentially destroying the string replacement operations.
How do I solve this? Is there a way to let the ASPX page NOT call Write several times, e.g. by changing its buffer size, or have I chosen the wrong approach entirely, by using this Response.Filter method to manipulate the rendered output?
