How to Reset/Remove read only property values in C#

How to remove query string from the url.

Example: In this example Query String value is setting to the null then it is removed from the query string:

            PropertyInfo isreadonly = typeof(System.Collections.Specialized.NameValueCollection).GetProperty("IsReadOnly", BindingFlags.Instance | BindingFlags.NonPublic);

            // make collection editable

            if (HttpContext.Current.Request != null)

            {

                // remove

                isreadonly.SetValue(HttpContext.Current.Request.QueryString, false,             null);

                HttpContext.Current.Request.QueryString.Set(keyname,null);

                HttpContext.Current.Request.QueryString.Remove(keyname);

            }

Note: PropertyInfo class will exist under “System.Reflection” namespace