SIPSorcery.SIP.SIPEscape.SIPURIParameterEscape C# (CSharp) Method

        public static string SIPURIParameterEscape(string unescapedString)
        {
            string result = unescapedString;
            if (!result.IsNullOrBlank())
            {
                result = result.Replace(";", "%3B");
                result = result.Replace("?", "%3F");
                result = result.Replace("@", "%40");
                result = result.Replace("=", "%3D");
                result = result.Replace(",", "%2C");
                result = result.Replace(" ", "%20");
            }
            return result;
        }

        public override string ToString()
        {
            string paramStr = null;

            if (m_dictionary != null)
            {
                foreach (KeyValuePair <string, string> param in m_dictionary)
                {
                    if (param.Value != null && param.Value.Trim().Length > 0)
                    {
                        paramStr += TagDelimiter + param.Key + TAG_NAME_VALUE_SEPERATOR +
                                    SIPEscape.SIPURIParameterEscape(param.Value);
                    }
                    else
                    {
                        paramStr += TagDelimiter + param.Key;
                    }
                }
            }

            return(paramStr);
        }