how to convert list of property names and values to an instantiated class object in c?

Created following using ExpandoObjects which seemed to do the trick for what I need. Will update if come accross any other scenarios

var temp = new Dictionary<string, string>();
temp["Prop1"] = "Test1";
temp["Prop2"] = "Test2";
temp["SubProperty.Sub1"] = "Test3";
temp["SubProperty.Sub2"] = "Test4";
temp["ListData[0].List1"] = "Test5";
temp["ListData[0].List2"] = "Test6";
temp["ListData[1].List1"] = "Test7";
temp["ListData[1].List2"] = "Test8";
temp["ListData[5].List1"] = "Test9";
temp["ListData[5].List2"] = "Test10";

var justjson = PropertiesToObject.ToJson(temp);
var myobj = PropertiesToObject.ToObject<MainClass>(temp);


public static class PropertiesToObject
{
    public static T ToObject<T>(Dictionary<string, string> dict)
    {
        var json = ToJson(dict);
        return JsonConvert.DeserializeObject<T>(json);
    }

    public static string ToJson(Dictionary<string, string> dict)
    {
        dynamic expando = new ExpandoObject();
        foreach (var item in dict)
        {
            AddProperty(expando, item.Key, item.Value);
        }

        return JsonConvert.SerializeObject(expando);
    }

    private static ExpandoObject SetValueIfListOrNot(ExpandoObject expando,string propertyName, object propertyValue)
    {
        bool isList = propertyName.Contains("[");
        var listName = propertyName.Split('[').FirstOrDefault();
        int listindex = isList ? int.Parse(propertyName.Split('[').LastOrDefault()?.Split(']').FirstOrDefault()) : 0;

        var expandoDict = expando as IDictionary<string, object>;
        if (expandoDict.ContainsKey(listName) == false)
        {
            if (!isList)
            {
                expandoDict.Add(listName, propertyValue);
            }
            else
            {
                var lobj = new dynamic[0];
                expandoDict.Add(listName, lobj);
            }
        }


        var exi = expandoDict[listName];
        if(exi.GetType().IsArray)
        {
            var ma = exi as dynamic[];
            var len = ma.Length;
            if (len < listindex + 1)
            {
                Array.Resize(ref ma, listindex + 1);
                expandoDict[listName] = ma;
            }

            var item = ma[listindex];
            if(item == null)
            {
                ma[listindex] = propertyValue;
            }
            return ma[listindex];
        } else
        {
            return exi as ExpandoObject;
        }
    }

    private static void AddProperty(ExpandoObject expando, string propertyName, object propertyValue)
    {
        var subprops = propertyName.Split('.');
        var propname = subprops.First();

        var rest = string.Join(".", subprops.Skip(1).ToList());
        if (rest == "")
        {
            SetValueIfListOrNot(expando, propname, propertyValue);
        } else
        {
            var expa = SetValueIfListOrNot(expando, propname, new ExpandoObject());
            AddProperty(expa, rest, propertyValue);
        }
    }
}