How can i know specific value on a form using `request.form`?
<p>How can i know specific value on a form using <code>request.form</code>?
I am trying it long but no success.</p>

<pre><code>i want to check something like this
if (request.form.contains("text_check"))  //But it doesn't work
{
go in;

}
else{

here we go;
}
</code></pre>

<p>i want to know specific value from AllKeys, and total count of all keys too.</p>
