Split and trim a string. Does not return empty strings.

gistfile1.txt

public static IEnumerable<string> SplitTrim(this string input, params char[] separator)
{
    if (input == null) throw new ArgumentNullException("input");
    string[] strings = input.Trim().Split(separator);
    foreach (var s in strings)
    {
        string trimmed = s.Trim();
        if (!String.IsNullOrWhiteSpace(trimmed))
            yield return trimmed;
    }
}