mind blown error

Reference.cs

Binary serialization of a List<SearchItem> blows up with (I can prove this worked as is for 5 years, not sure what is up now)

An unhandled exception of type 'System.Runtime.Serialization.SerializationException' occurred in mscorlib.dll
Additional information: Type 'System.Xml.XmlElement' in Assembly 'System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' is not marked as serializable.



    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "4.0.30319.18034")]
    [System.SerializableAttribute()]
    [System.Diagnostics.DebuggerStepThroughAttribute()]
    [System.ComponentModel.DesignerCategoryAttribute("code")]
    [System.Xml.Serialization.XmlTypeAttribute(Namespace="http://www.ebay.com/marketplace/search/v1/services")]
    public partial class SearchItem : object, System.ComponentModel.INotifyPropertyChanged {
        
        private string itemIdField;
        
        private string titleField;
        
        private string globalIdField;
        
        private string subtitleField;
        
        private Category primaryCategoryField;
        
        private Category secondaryCategoryField;
        
        private string galleryURLField;
        
        private GalleryURL[] galleryInfoContainerField;
        
        private string viewItemURLField;
        
        private string charityIdField;
        
        private ProductId productIdField;
        
        private string[] paymentMethodField;
        
        private bool autoPayField;
        
        private bool autoPayFieldSpecified;
        
        private string postalCodeField;
        
        private string locationField;
        
        private string countryField;
        
        private Storefront storeInfoField;
        
        private SellerInfo sellerInfoField;
        
        private ShippingInfo shippingInfoField;
        
        private SellingStatus sellingStatusField;
        
        private ListingInfo listingInfoField;
        
        private bool returnsAcceptedField;
        
        private bool returnsAcceptedFieldSpecified;
        
        private string[] galleryPlusPictureURLField;
        
        private string compatibilityField;
        
        private Distance distanceField;
        
        private Condition conditionField;
        
        private bool isMultiVariationListingField;
        
        private bool isMultiVariationListingFieldSpecified;
        
        private DiscountPriceInfo discountPriceInfoField;
        
        private string pictureURLSuperSizeField;
        
        private string pictureURLLargeField;
        
        private UnitPriceInfo unitPriceField;
        
        private ItemAttribute[] attributeField;
        
        private bool topRatedListingField;
        
        private bool topRatedListingFieldSpecified;
        
        private string delimiterField;
        
        private System.Xml.XmlElement[] anyField;
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=0)]
        public string itemId {
            get {
                return this.itemIdField;
            }
            set {
                this.itemIdField = value;
                this.RaisePropertyChanged("itemId");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=1)]
        public string title {
            get {
                return this.titleField;
            }
            set {
                this.titleField = value;
                this.RaisePropertyChanged("title");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(DataType="token", Order=2)]
        public string globalId {
            get {
                return this.globalIdField;
            }
            set {
                this.globalIdField = value;
                this.RaisePropertyChanged("globalId");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=3)]
        public string subtitle {
            get {
                return this.subtitleField;
            }
            set {
                this.subtitleField = value;
                this.RaisePropertyChanged("subtitle");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=4)]
        public Category primaryCategory {
            get {
                return this.primaryCategoryField;
            }
            set {
                this.primaryCategoryField = value;
                this.RaisePropertyChanged("primaryCategory");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=5)]
        public Category secondaryCategory {
            get {
                return this.secondaryCategoryField;
            }
            set {
                this.secondaryCategoryField = value;
                this.RaisePropertyChanged("secondaryCategory");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(DataType="anyURI", Order=6)]
        public string galleryURL {
            get {
                return this.galleryURLField;
            }
            set {
                this.galleryURLField = value;
                this.RaisePropertyChanged("galleryURL");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlArrayAttribute(Order=7)]
        [System.Xml.Serialization.XmlArrayItemAttribute("galleryURL", IsNullable=false)]
        public GalleryURL[] galleryInfoContainer {
            get {
                return this.galleryInfoContainerField;
            }
            set {
                this.galleryInfoContainerField = value;
                this.RaisePropertyChanged("galleryInfoContainer");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(DataType="anyURI", Order=8)]
        public string viewItemURL {
            get {
                return this.viewItemURLField;
            }
            set {
                this.viewItemURLField = value;
                this.RaisePropertyChanged("viewItemURL");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=9)]
        public string charityId {
            get {
                return this.charityIdField;
            }
            set {
                this.charityIdField = value;
                this.RaisePropertyChanged("charityId");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=10)]
        public ProductId productId {
            get {
                return this.productIdField;
            }
            set {
                this.productIdField = value;
                this.RaisePropertyChanged("productId");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute("paymentMethod", DataType="token", Order=11)]
        public string[] paymentMethod {
            get {
                return this.paymentMethodField;
            }
            set {
                this.paymentMethodField = value;
                this.RaisePropertyChanged("paymentMethod");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=12)]
        public bool autoPay {
            get {
                return this.autoPayField;
            }
            set {
                this.autoPayField = value;
                this.RaisePropertyChanged("autoPay");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlIgnoreAttribute()]
        public bool autoPaySpecified {
            get {
                return this.autoPayFieldSpecified;
            }
            set {
                this.autoPayFieldSpecified = value;
                this.RaisePropertyChanged("autoPaySpecified");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=13)]
        public string postalCode {
            get {
                return this.postalCodeField;
            }
            set {
                this.postalCodeField = value;
                this.RaisePropertyChanged("postalCode");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=14)]
        public string location {
            get {
                return this.locationField;
            }
            set {
                this.locationField = value;
                this.RaisePropertyChanged("location");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(DataType="token", Order=15)]
        public string country {
            get {
                return this.countryField;
            }
            set {
                this.countryField = value;
                this.RaisePropertyChanged("country");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=16)]
        public Storefront storeInfo {
            get {
                return this.storeInfoField;
            }
            set {
                this.storeInfoField = value;
                this.RaisePropertyChanged("storeInfo");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=17)]
        public SellerInfo sellerInfo {
            get {
                return this.sellerInfoField;
            }
            set {
                this.sellerInfoField = value;
                this.RaisePropertyChanged("sellerInfo");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=18)]
        public ShippingInfo shippingInfo {
            get {
                return this.shippingInfoField;
            }
            set {
                this.shippingInfoField = value;
                this.RaisePropertyChanged("shippingInfo");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=19)]
        public SellingStatus sellingStatus {
            get {
                return this.sellingStatusField;
            }
            set {
                this.sellingStatusField = value;
                this.RaisePropertyChanged("sellingStatus");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=20)]
        public ListingInfo listingInfo {
            get {
                return this.listingInfoField;
            }
            set {
                this.listingInfoField = value;
                this.RaisePropertyChanged("listingInfo");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=21)]
        public bool returnsAccepted {
            get {
                return this.returnsAcceptedField;
            }
            set {
                this.returnsAcceptedField = value;
                this.RaisePropertyChanged("returnsAccepted");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlIgnoreAttribute()]
        public bool returnsAcceptedSpecified {
            get {
                return this.returnsAcceptedFieldSpecified;
            }
            set {
                this.returnsAcceptedFieldSpecified = value;
                this.RaisePropertyChanged("returnsAcceptedSpecified");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute("galleryPlusPictureURL", DataType="anyURI", Order=22)]
        public string[] galleryPlusPictureURL {
            get {
                return this.galleryPlusPictureURLField;
            }
            set {
                this.galleryPlusPictureURLField = value;
                this.RaisePropertyChanged("galleryPlusPictureURL");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=23)]
        public string compatibility {
            get {
                return this.compatibilityField;
            }
            set {
                this.compatibilityField = value;
                this.RaisePropertyChanged("compatibility");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=24)]
        public Distance distance {
            get {
                return this.distanceField;
            }
            set {
                this.distanceField = value;
                this.RaisePropertyChanged("distance");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=25)]
        public Condition condition {
            get {
                return this.conditionField;
            }
            set {
                this.conditionField = value;
                this.RaisePropertyChanged("condition");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=26)]
        public bool isMultiVariationListing {
            get {
                return this.isMultiVariationListingField;
            }
            set {
                this.isMultiVariationListingField = value;
                this.RaisePropertyChanged("isMultiVariationListing");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlIgnoreAttribute()]
        public bool isMultiVariationListingSpecified {
            get {
                return this.isMultiVariationListingFieldSpecified;
            }
            set {
                this.isMultiVariationListingFieldSpecified = value;
                this.RaisePropertyChanged("isMultiVariationListingSpecified");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=27)]
        public DiscountPriceInfo discountPriceInfo {
            get {
                return this.discountPriceInfoField;
            }
            set {
                this.discountPriceInfoField = value;
                this.RaisePropertyChanged("discountPriceInfo");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(DataType="anyURI", Order=28)]
        public string pictureURLSuperSize {
            get {
                return this.pictureURLSuperSizeField;
            }
            set {
                this.pictureURLSuperSizeField = value;
                this.RaisePropertyChanged("pictureURLSuperSize");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(DataType="anyURI", Order=29)]
        public string pictureURLLarge {
            get {
                return this.pictureURLLargeField;
            }
            set {
                this.pictureURLLargeField = value;
                this.RaisePropertyChanged("pictureURLLarge");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=30)]
        public UnitPriceInfo unitPrice {
            get {
                return this.unitPriceField;
            }
            set {
                this.unitPriceField = value;
                this.RaisePropertyChanged("unitPrice");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute("attribute", Order=31)]
        public ItemAttribute[] attribute {
            get {
                return this.attributeField;
            }
            set {
                this.attributeField = value;
                this.RaisePropertyChanged("attribute");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=32)]
        public bool topRatedListing {
            get {
                return this.topRatedListingField;
            }
            set {
                this.topRatedListingField = value;
                this.RaisePropertyChanged("topRatedListing");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlIgnoreAttribute()]
        public bool topRatedListingSpecified {
            get {
                return this.topRatedListingFieldSpecified;
            }
            set {
                this.topRatedListingFieldSpecified = value;
                this.RaisePropertyChanged("topRatedListingSpecified");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=33)]
        public string delimiter {
            get {
                return this.delimiterField;
            }
            set {
                this.delimiterField = value;
                this.RaisePropertyChanged("delimiter");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlAnyElementAttribute(Order=34)]
        public System.Xml.XmlElement[] Any {
            get {
                return this.anyField;
            }
            set {
                this.anyField = value;
                this.RaisePropertyChanged("Any");
            }
        }
        
        public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;
        
        protected void RaisePropertyChanged(string propertyName) {
            System.ComponentModel.PropertyChangedEventHandler propertyChanged = this.PropertyChanged;
            if ((propertyChanged != null)) {
                propertyChanged(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName));
            }
        }
    }
    
    /// <remarks/>
    [System.Xml.Serialization.XmlIncludeAttribute(typeof(CategoryHistogram))]
    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "4.0.30319.18034")]
    [System.SerializableAttribute()]
    [System.Diagnostics.DebuggerStepThroughAttribute()]
    [System.ComponentModel.DesignerCategoryAttribute("code")]
    [System.Xml.Serialization.XmlTypeAttribute(Namespace="http://www.ebay.com/marketplace/search/v1/services")]
    public partial class Category : object, System.ComponentModel.INotifyPropertyChanged {
        
        private string categoryIdField;
        
        private string categoryNameField;
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=0)]
        public string categoryId {
            get {
                return this.categoryIdField;
            }
            set {
                this.categoryIdField = value;
                this.RaisePropertyChanged("categoryId");
            }
        }
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute(Order=1)]
        public string categoryName {
            get {
                return this.categoryNameField;
            }
            set {
                this.categoryNameField = value;
                this.RaisePropertyChanged("categoryName");
            }
        }
        
        public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged;
        
        protected void RaisePropertyChanged(string propertyName) {
            System.ComponentModel.PropertyChangedEventHandler propertyChanged = this.PropertyChanged;
            if ((propertyChanged != null)) {
                propertyChanged(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName));
            }
        }
    }