System.ComponentModel.BaseNumberConverter.ConvertFrom C# (CSharp) Method

        public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) {
            if (value is string) {
                string text = ((string)value).Trim();

                try {
                    if (AllowHex && text[0] == '#') {
                        return FromString(text.Substring(1), 16);
                    }
                    else if (AllowHex && text.StartsWith("0x") 
                             || text.StartsWith("0X")
                             || text.StartsWith("&h")
                             || text.StartsWith("&H")) {
                        return FromString(text.Substring(2), 16);
                    }
                    else {
                        if (culture == null) {
                            culture = CultureInfo.CurrentCulture;
                        }
                        NumberFormatInfo formatInfo = (NumberFormatInfo)culture.GetFormat(typeof(NumberFormatInfo));
                        return FromString(text, formatInfo);
                    }
                }
                catch (Exception e) {
                    throw FromStringError(text, e);
                }
                catch { throw; }
            }
            return base.ConvertFrom(context, culture, value);
        }