Suppose your querystring is something like this :
http://stackoverflow.com/questions.aspx?id=17844065&title=post-parameters-in-asp-net
if i am right then you are looking for this. Please note this is regarding ASP.Net, I have no idea about classic ASP. And this will not work on classic ASP, I believe.
You can use in cs,
if(Request["id"]!=null )
{
var id= Request["id"]; // gives you id as 17844065 string values
}
if(Request["title"]!=null )
{
var title= Request["title"]; // gives you title as string
}
Update :
NameValueCollection nvc = Request.Form;
string userName, password;
if (!string.IsNullOrEmpty(nvc["txtUserName"]))
{
userName = nvc["txtUserName"];
}
if (!string.IsNullOrEmpty(nvc["txtPassword"]))
{
password = nvc["txtPassword"];
}