Remove QueryString from url and Setting the readonly Property as False

 //Remove QueryString  from url and Setting the readonly Property as False

using System.Reflection;

                    PropertyInfo isreadonly = typeof(System.Collections.Specialized.NameValueCollection).GetProperty("IsReadOnly", BindingFlags.Instance | BindingFlags.NonPublic);
                    isreadonly.SetValue(this.Request.QueryString, false, null);
                    this.Request.QueryString.Remove("Id");