App Setting Json serialization

        public class Inclusion
        {
            public string ComponentTypeFullName { get; set; }
            public string EventName { get; set; }
            public string[] SenderPropertyNames { get; set; }
            public string[] EventArgsPropertyNames { get; set; }
        }

        static List li = new List()
        {
            new Inclusion(){ 
                ComponentTypeFullName="Infragistics.Win.Misc.UltraButton", 
                EventName="Click",
                SenderPropertyNames=new string[]{null},
                EventArgsPropertyNames=new string[]{null}},
            new Inclusion() { 
                ComponentTypeFullName="Infragistics.Win.UltraWinEditors.UltraComboEditor", 
                EventName="SelectionChanged",
                SenderPropertyNames=new string[]{"Text"},
                EventArgsPropertyNames=new string[]{null}},
            new Inclusion() { 
                ComponentTypeFullName="Infragistics.Win.UltraWinToolbars.UltraToolbarsManager", 
                EventName="ToolClick",
                SenderPropertyNames=new string[]{null},
                EventArgsPropertyNames=new string[]{"Tool.Key"}},
                
        };

            //Read
            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(List));
            string cd = Settings.Default.Inclusion;
            MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(cd));
            
            List li2 =(List) ser.ReadObject(ms);
            ms.Close();

            //write to see the format
            Type t = li.GetType();
            DataContractJsonSerializer ser2 = new DataContractJsonSerializer(t);
            FileStream fs = new FileStream(@"c:\3.txt", FileMode.CreateNew);
            ser.WriteObject(fs, li);
            fs.Flush();
            fs.Close();