Store Dictionary in application settings

Question

I have a dictionary of strings that i want the user to be able to add/remove info from then store it for them so it they can access it the next time the program restarts

Answer 1

You can store a StringCollection. It is similar to this solution.

I made 2 extension methods to convert between StringCollection and a Dictionary. This is the easiest way I could think of.

public static class Extender
{
    public static Dictionary ToDictionary(this StringCollection sc)
    {
        if (sc.Count % 2 != 0) throw new InvalidDataException("Broken dictionary");

        var dic = new Dictionary();
        for (var i = 0; i < sc.Count; i += 2)
        {
            dic.Add(sc[i], sc[i + 1]);
        }
        return dic;
    }

    public static StringCollection ToStringCollection(this Dictionary dic)
    {
        var sc = new StringCollection();
        foreach (var d in dic)
        {
            sc.Add(d.Key);
            sc.Add(d.Value);
        }
        return sc;
    }
}

class Program
{
    static void Main(string[] args)
    {
        //var sc = new StringCollection();
        //sc.Add("Key01");
        //sc.Add("Val01");
        //sc.Add("Key02");
        //sc.Add("Val02");

        var sc = Settings.Default.SC;

        var dic = sc.ToDictionary();
        var sc2 = dic.ToStringCollection();

        Settings.Default.SC = sc2;
        Settings.Default.Save();
    }
}