System.Configuration.ConfigurationProperty.InitDefaultValueFromTypeInfo C# (CSharp) Метод

        private void InitDefaultValueFromTypeInfo(ConfigurationPropertyAttribute attribProperty,
                                                    DefaultValueAttribute attribStdDefault) {
            object defaultValue = attribProperty.DefaultValue;

            // If there is no default value there - try the other attribute ( the clr standard one )
            if ((defaultValue == null || defaultValue == ConfigurationElement.s_nullPropertyValue) &&
                (attribStdDefault != null)) {
                defaultValue = attribStdDefault.Value;
            }

            // If there was a default value in the prop attribute - check if we need to convert it from string
            if ((defaultValue != null) && (defaultValue is string) && (_type != typeof(string))) {
                // Use the converter to parse this property default value
                try {
                    defaultValue = Converter.ConvertFromInvariantString((string)defaultValue);
                }
                catch (Exception ex) {
                    throw new ConfigurationErrorsException(SR.GetString(SR.Default_value_conversion_error_from_string, _name, ex.Message));
                }
                catch {
                    throw new ConfigurationErrorsException(SR.GetString(SR.Default_value_conversion_error_from_string, _name, ExceptionUtil.NoExceptionInformation));
                }
            }
            if (defaultValue == null || defaultValue == ConfigurationElement.s_nullPropertyValue) {
                if (_type == typeof(string)) {
                    defaultValue = String.Empty;
                }
                else if (_type.IsValueType) {
                    defaultValue = TypeUtil.CreateInstanceWithReflectionPermission(_type);
                }
            }
            SetDefaultValue(defaultValue);
        }