c# primitive extensions not supported?

[genis-cats]

Hello!

I'd like to make a extension function in primitive type such as string, byte[], byte and so one.

I tested with this code but seems not suported in NLua.

Is there any a way to available access a extension function?

namespace LuaConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
            using (Lua lua = new Lua())
            {
                lua.State.Encoding = Encoding.UTF8;
                lua["a"] = "a";

                lua.LoadCLRPackage();
                lua.DoString("import('LuaConsoleApp','LuaConsoleApp.StringExtensions')");
                lua.DoString("a:AddString()");
                Console.WriteLine(lua["a"]);
            }
        }
    }
}

namespace LuaConsoleApp.StringExtensions
{
    public static class StringExtensions
    {
        public static string AddString(this string str)
        {
            return str += "a";
        }
    }
}

Exception

NLua.Exceptions.LuaScriptException: '[string "chunk"]:1: attempt to call a nil value (method 'AddString')'

[viniciusjarina]

It's because a is a Lua string and not C# string. Try a = StringExtensions.AddString(a) and see if it works