Microsoft.VisualStudio.R.Package.DataInspect.TextVisual.IsNumerical C# (CSharp) Method

        private static bool IsNumerical(string text) {
            double d;
            int x;
            if(double.TryParse(text, NumberStyles.Number | NumberStyles.AllowExponent, CultureInfo.InvariantCulture, out d) || int.TryParse(text, out x)) {
                return true;
            }
            return false;
        }
    }