System.Xml.Serialization.SoapReflectionImporter.GetDefaultValue C# (CSharp) Method

        object GetDefaultValue(TypeDesc fieldTypeDesc, SoapAttributes a) {
            if (a.SoapDefaultValue == null || a.SoapDefaultValue == DBNull.Value) return null;
            if (!(fieldTypeDesc.Kind == TypeKind.Primitive || fieldTypeDesc.Kind == TypeKind.Enum))  {
                a.SoapDefaultValue = null;
                return a.SoapDefaultValue;
            }
            // for enums validate and return a string representation
            if (fieldTypeDesc.Kind == TypeKind.Enum) {
                if (fieldTypeDesc != typeScope.GetTypeDesc(a.SoapDefaultValue.GetType()))
                    throw new InvalidOperationException(Res.GetString(Res.XmlInvalidDefaultEnumValue, a.SoapDefaultValue.GetType().FullName, fieldTypeDesc.FullName));
                string strValue = Enum.Format(a.SoapDefaultValue.GetType(), a.SoapDefaultValue, "G").Replace(",", " ");
                string numValue = Enum.Format(a.SoapDefaultValue.GetType(), a.SoapDefaultValue, "D");
                if (strValue == numValue) // means enum value wasn't recognized
                    throw new InvalidOperationException(Res.GetString(Res.XmlInvalidDefaultValue, strValue, a.SoapDefaultValue.GetType().FullName));
                return strValue;
            }
            return a.SoapDefaultValue;
        }