Split a comma separated string while removing whitespace and empty entries
Using Trim with StringSplitOptions.RemoveEmptyEntries doesn't work because " " isn't considered an empty entry. You need to do a normal split, then trim each item, then filter out the empty strings.
valueString.Split(',') .Select(x => x.Trim()) .Where(x => !string.IsNullOrWhiteSpace(x)) .ToArray();