System.Runtime.Serialization.Json.XmlJsonWriter.WriteXmlnsAttribute C# (CSharp) Method

        public override void WriteXmlnsAttribute(string prefix, XmlDictionaryString namespaceUri)
        {
            if (!IsWritingNameWithMapping)
            {
                throw new NotSupportedException(SR.Format(SR.JsonMethodNotSupported, "WriteXmlnsAttribute"));
            }
        }