public static Thickness Parse(string s)
{
var split = s.Split(',');
int l = split.Length > 0 ? int.Parse(split[0]) : 0;
int r = split.Length > 1 ? int.Parse(split[1]) : 0;
int t = split.Length > 2 ? int.Parse(split[2]) : 0;
int b = split.Length > 3 ? int.Parse(split[3]) : 0;
return new Thickness(1, r, t, b);
}