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

        public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) {
            if (value is string) {
                try {
                    string strValue = (string)value;
                    if (strValue.IndexOf(',') != -1) {
                        long convertedValue = 0;
                        string[] values = strValue.Split(new char[] {','});
                        foreach(string v in values) {
                            convertedValue |= Convert.ToInt64((Enum)Enum.Parse(type, v, true), culture);
                        }
                        return Enum.ToObject(type, convertedValue);
                    }
                    else {
                        return Enum.Parse(type, strValue, true);
                    }
                }
                catch (Exception e) {
                    throw new FormatException(SR.GetString(SR.ConvertInvalidPrimitive, (string)value, type.Name), e);
                }
            }
            else if (value is Enum[]) {
                long finalValue = 0;
                foreach(Enum e in (Enum[])value) {
                    finalValue |= Convert.ToInt64(e, culture);
                }
                return Enum.ToObject(type, finalValue);
            }
            return base.ConvertFrom(context, culture, value);
        }
    

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            var valueType = value.GetType();

            var originalValue = (Enum) value;
            var converter = new EnumConverter(valueType);
            var flag = (Enum) converter.ConvertFrom(parameter);

            Debug.Assert(flag != null, "flag != null");

            return originalValue.HasFlag(flag);
        }