Allow HTTP GET and POST of data to an .aspx page.

In Page_Load, use Request directly to allow GET and POST of data from client.

Request.QueryString[] will return value from the GET request of query string. 
i.e., http://[url]?data=somedata
Request.QueryString["data"] //will return "somedata"

Request.Form[] will return value of POST request.
i.e.,

<form action="http://[url]/Default.aspx" method="post">
    <input name="data" type="text" value="somedata" id="data" />
    <input type="submit" name="Button1" value="Button" id="Button1" />
</form>
Request.Form["data"] //will return "somedata"

Request[] will look through all the collections below to find a match:
HttpRequest.QueryString

HttpRequest.Form

HttpRequest.Cookies

HttpRequest.ServerVariables

i.e., if Request["data"] is used, the page will accept GET and POST request without specifying which specific method the page will allow.