Question

the “problem” is that I do have an ASP.NET TextBox in a FormView with its Text property bound to a database table field. In some cases, there might be HTML-code combined with normal text in the database. The RequestEncoding and ResponseEncoding is set to “iso-8859-1” (whitch is latin1). There are some fields where latin1-characters and cyrillic characters may be combined. This is no problem when typing in cyrillic characters (e.g “д”). Because the RequestEncoding is set to iso-8859-1 and the charset for the browser as well, the browser will change д to “д”, which will be saved in the database. That’s what I want, but because “д” will be converted to “д” when set to an ASP.NET TextBox’s Text-property before the response output is sent to the browser, I do see “д” after saving the data.

Can anybody tell me how to stop ASP.NET from that conversion?

ALternatively: Is there a way to alter the conplete output of an ASPX site after all controls have ben rendered? – I could than replace “&#” by “&#”.

Answer 1

I solved my problem (PortageMonkey showed me the way):

First I created a class “IsoTextBox” which inherits from System.Web.UI.WebControls.TextBox. Because the Text property does always returns a non-encoded string, simply changing the Text properties attribute did not do the job. Instead I overrote the Render method:

protected override void Render(HtmlTextWriter writer)
{
    StringWriter stringWriter = new StringWriter();
    HtmlTextWriter source = new HtmlTextWriter(stringWriter);
    base.Render(source);
    writer.Write(stringWriter.ToString().Replace("&#", "&#"));
}

And than added the tagMapping in the web.config:

<system.web>
      <pages>
        <tagMapping>
         <add mappedTagType="MyNamespace.IsoTextBox" tagType="System.Web.UI.WebControls.TextBox"/>
        </tagMapping>
      </pages>
      <globalization requestEncoding="iso-8859-1" responseEncoding="iso-8859-1"/>
</system.web>

This works very well!