What does Request[" "] mean?
<p>I came accross this unusual thing, and I'm not sure what it is.</p>

<p>There is a place in the code where I found :</p>

<pre><code>if(IsPostBack == false)
{
    string strInterior = Request["xmlString"];
}
</code></pre>

<p>I have one javascript page which is using xml http object ajax (The project is in <em>asp.net 1.1</em>)</p>

<p>This xmlString is a variable in javascript which contains a XML format string and passes it like this:</p>

<pre><code>var objTrim = createXMLHttpObj();
var xmlString = "&lt;UrlXML&gt;";
xmlString += "&lt;ID&gt;" + id + "&lt;/ID&gt;";
url = url + "abc.aspx?trim=";       
objTrim.open("POST", url + escape(TrimRecordsValue) , true);
objTrim.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");  

objTrim.send("xmlString=" + xmlString);
</code></pre>

<p>I am not sure what this <code>Request["xmlString"]</code> means .This is called in the code behind the page. Any ideas?</p>
