Request.Form

            var obj = Request.Form;
            StringBuilder sb = new StringBuilder();

            PropertyInfo[] properties = obj.GetType().GetProperties();
            foreach (PropertyInfo p in properties)
            {
                if (p.Name == "Form")
                {
                    try {
                        var yy = p.GetValue(obj);
                    }
                    catch(Exception ex) {

                        var zzz = ex.ToString();
                    }
            

                }                
                sb.AppendLine(p.Name);
            }
            var ss = sb.ToString();

Type Ts = Request.GetType();
object o = Ts.GetProperty("Fom");
if (o != null)
{

  }