Untitled

How to check if client computer is running a 32-bit or 64-bit OS
System.Environment.GetEnvironmentVariable("PROCESSOR_ARCHITECTURE")

if (!IsPostBack) {
            int loop1, loop2;
            NameValueCollection coll;

            // Load ServerVariable collection into NameValueCollection object.
            coll = Request.ServerVariables;
            // Get names of all keys into a string array.
            String[] arr1 = coll.AllKeys;
            for (loop1 = 0; loop1 < arr1.Length; loop1++) {
                Response.Write("Key: " + arr1[loop1] + "<br>");
                String[] arr2 = coll.GetValues(arr1[loop1]);
                for (loop2 = 0; loop2 < arr2.Length; loop2++) {
                    Response.Write("Value " + loop2 + ": " + Server.HtmlEncode(arr2[loop2]) + "<br>");
                }
            }
        }