Efficient way to extract double value from a List<string> in C#
string sGraph = "0.05 /m 0.05 /m 0.05 /m 0.05 /m 0.05 /m 0.05 /m 0.05 /m 0.05....... 0.05 /m";

List<String> sGraphPoints = Regex.Split(sGraph, " /m").ToList<string>();

double[] dGraphPoints = new double[sGraphPoints.Count];
            int i = 0;
            foreach (string str in sGraphPoints)
            {
                if (str != "")
                {
                    dGraphPoints[i] = double.Parse(str);
                }
                else
                {
                    dGraphPoints[i] = 0.0;
                }

               i++;
            }

double[] dGraphPoints = sGraph.Split("/m")
                              .Select(s => s.Trim())
                              .Where(s => !string.IsNullOrEmpty(s))
                              .Select(s => Double.Parse(s))
                              .ToArray()

public static IList<double> Parse(string text)
{
    List<double> list = new List<double>();
    if (text != null)
    {
        StringBuilder dbl = new StringBuilder(30);
        for (int i = 0; i < text.Length; i++)
        {
            if (text[i] == 'm')
            {
                list.Add(double.Parse(dbl.ToString(), CultureInfo.InvariantCulture));
                dbl.Length = 0;
            }
            else
            {
                if ((text[i] != ' ') && (text[i] != '/'))
                {
                    dbl.Append(text[i]);
                }
            }
        }
    }
    return list;
}