How to disable ASP.NET render default html tag?
<p>For some reason, i have to make a aspx page to let iphone/android to Post form.
After the data processing of request.form ,  i have response a JSON string in plain text.
However *.aspx will enforce to render html,head,body tag,so how can i disable it?</p>

<p>I cannot use ashx, because the mobile have to post image via form, as i search the answer by google ,ashx cannot handle the http post files.</p>

<p><strong>Edit:
As SLaks said, ashx can handle POST file using "context.Request.Files" and it works.</strong></p>
