CSV displaying wrong in mac

Question

I am working on a asp.net mvc 4 project that will be used by different peoples around the world. I have an option that will download all the registered users of the project in csv format. I am creating the csv by my self without an external class and for separating the values i use System.Globalization.CultureInfo.CurrentCulture.TextInfo.ListSeparator to get the current culture list separator but for some reason this doesn't work on macs and all the result display in one column(it works fine on windows). I have read that in macs the list separator is ";" and not "," but i don't know how to manage in code to detect it automatically. I want something that will work with all the programs capable of displaying csv not only excel. Does somebody know how i can do this?