c# – .NET XML序列化错误(反映类型有错误)

概述是的,我知道非常通用的标题,但我现在要解释. 鉴于下面的类定义,有人可以解释为什么我在调用Serialize()方法时会遇到此异常. {“有一个错误反映了’FNM.MISMO_3_0.FOREIGN_OBJECT’类型.”} {“选择标识符’ItemsElementName’的类型与’Items’的类型不一致.请使用System.Collections.Generic.List`1 [[MISMO 是的,我知道非常通用的标题,但我现在要解释.

鉴于下面的类定义,有人可以解释为什么我在调用Serialize()方法时会遇到此异常.

{“有一个错误反映了’FNM.MISMO_3_0.FOREIGN_OBJECT’类型.”}

{“选择标识符’ItemsElementname’的类型与’Items’的类型不一致.请使用System.Collections.Generic.List`1 [[MISMO_3_0.ItemsChoiceType,MISMO_3_0,Version = 1.0.0.0,Culture = neutral,PublicKeyToken]的数组= NulL]].“}

谢谢,
斯蒂芬

[System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml","4.0.30319.225")][System.SerializableAttribute()][System.Diagnostics.DeBUGgerStepThroughAttribute()][System.ComponentModel.DesignercategoryAttribute("code")][System.Xml.Serialization.XmlTypeAttribute(namespace = "http://www.mismo.org/resIDential/2009/schemas")][System.Xml.Serialization.XmlRootAttribute(namespace = "http://www.mismo.org/resIDential/2009/schemas",IsNullable = true)]public partial class FOREIGN_OBJECT{    private List<object> itemsFIEld;    private List<ItemsChoiceType> itemsElementnameFIEld;    private MISMOresourcelink typeFIEld;    private bool typeFIEldSpecifIEd;    private string roleFIEld;    private string TitleFIEld;    private string labelFIEld;    private string sequenceNumberFIEld;    private static System.Xml.Serialization.XmlSerializer serializer;    public FOREIGN_OBJECT()    {        this.itemsElementnameFIEld = new List<ItemsChoiceType>();        this.itemsFIEld = new List<object>();    }    [System.Xml.Serialization.XmlElementAttribute("CharacterEnCodingSetType",typeof(CharacterEnCodingSetEnum),Order = 0)]    [System.Xml.Serialization.XmlElementAttribute("CharacterEnCodingSetTypeOtherDescription",typeof(MISMOString),Order = 0)]    [System.Xml.Serialization.XmlElementAttribute("EXTENSION",typeof(EXTENSION),Order = 0)]    [System.Xml.Serialization.XmlElementAttribute("EmbeddedContentXML",typeof(MISMOXML),Order = 0)]    [System.Xml.Serialization.XmlElementAttribute("MIMETypeIDentifIEr",typeof(MISMOIDentifIEr),Order = 0)]    [System.Xml.Serialization.XmlElementAttribute("ObjectCreatedDatetime",typeof(MISMODatetime),Order = 0)]    [System.Xml.Serialization.XmlElementAttribute("ObjectDescription",Order = 0)]    [System.Xml.Serialization.XmlElementAttribute("ObjectEnCodingType",typeof(ObjectEnCodingEnum),Order = 0)]    [System.Xml.Serialization.XmlElementAttribute("ObjectEnCodingTypeOtherDescription",Order = 0)]    [System.Xml.Serialization.XmlElementAttribute("Objectname",Order = 0)]    [System.Xml.Serialization.XmlElementAttribute("ObjectURI",typeof(string),DataType = "anyURI",Order = 0)]    [System.Xml.Serialization.XmlElementAttribute("OriginalCreatorDigestValue",typeof(MISMovalue),Order = 0)]    [System.Xml.Serialization.XmlElementAttribute("REFERENCE",typeof(REFERENCE),Order = 0)]    [System.Xml.Serialization.XmlChoiceIDentifIErAttribute("ItemsElementname")]    public List<object> Items    {        get        {            return this.itemsFIEld;        }        set        {            this.itemsFIEld = value;        }    }    [System.Xml.Serialization.XmlElementAttribute("ItemsElementname",Order = 1)]    [System.Xml.Serialization.XmlignoreAttribute()]    public List<ItemsChoiceType> ItemsElementname    {        get        {            return this.itemsElementnameFIEld;        }        set        {            this.itemsElementnameFIEld = value;        }    }    [System.Xml.Serialization.XmlAttributeAttribute(Form = System.Xml.Schema.XmlSchemaForm.QualifIEd,namespace = "http://www.w3.org/1999/xlink")]    public MISMOresourcelink type    {        get        {            return this.typeFIEld;        }        set        {            this.typeFIEld = value;        }    }    [System.Xml.Serialization.XmlignoreAttribute()]    public bool typespecifIEd    {        get        {            return this.typeFIEldSpecifIEd;        }        set        {            this.typeFIEldSpecifIEd = value;        }    }    [System.Xml.Serialization.XmlAttributeAttribute(Form = System.Xml.Schema.XmlSchemaForm.QualifIEd,namespace = "http://www.w3.org/1999/xlink")]    public string role    {        get        {            return this.roleFIEld;        }        set        {            this.roleFIEld = value;        }    }    [System.Xml.Serialization.XmlAttributeAttribute(Form = System.Xml.Schema.XmlSchemaForm.QualifIEd,namespace = "http://www.w3.org/1999/xlink")]    public string Title    {        get        {            return this.TitleFIEld;        }        set        {            this.TitleFIEld = value;        }    }    [System.Xml.Serialization.XmlAttributeAttribute(Form = System.Xml.Schema.XmlSchemaForm.QualifIEd,namespace = "http://www.w3.org/1999/xlink",DataType = "NMTOKEN")]    public string label    {        get        {            return this.labelFIEld;        }        set        {            this.labelFIEld = value;        }    }    [System.Xml.Serialization.XmlAttributeAttribute(DataType = "integer")]    public string SequenceNumber    {        get        {            return this.sequenceNumberFIEld;        }        set        {            this.sequenceNumberFIEld = value;        }    }    private static System.Xml.Serialization.XmlSerializer Serializer    {        get        {            if ((serializer == null))            {                serializer = new System.Xml.Serialization.XmlSerializer(typeof(FOREIGN_OBJECT));            }            return serializer;        }    }    #region Serialize/Deserialize    /// <summary>    /// Serializes current FOREIGN_OBJECT object into an XML document    /// </summary>    /// <returns>string XML value</returns>    public virtual string Serialize(System.Text.EnCoding enCoding)    {        System.IO.StreamReader streamReader = null;        System.IO.MemoryStream memoryStream = null;        try        {            memoryStream = new System.IO.MemoryStream();            System.Xml.XmlWriterSettings xmlWriterSettings = new System.Xml.XmlWriterSettings();            xmlWriterSettings.EnCoding = enCoding;            System.Xml.XmlWriter xmlWriter = XmlWriter.Create(memoryStream,xmlWriterSettings);            Serializer.Serialize(xmlWriter,this);            memoryStream.Seek(0,System.IO.SeekOrigin.Begin);            streamReader = new System.IO.StreamReader(memoryStream);            return streamReader.ReadToEnd();        }        finally        {            if ((streamReader != null))            {                streamReader.dispose();            }            if ((memoryStream != null))            {                memoryStream.dispose();            }        }    }    public virtual string Serialize()    {        return Serialize(EnCoding.UTF8);    }    /// <summary>    /// Deserializes workflow markup into an FOREIGN_OBJECT object    /// </summary>    /// <param name="xml">string workflow markup to deserialize</param>    /// <param name="obj">Output FOREIGN_OBJECT object</param>    /// <param name="exception">output Exception value if deserialize Failed</param>    /// <returns>true if this XmlSerializer can deserialize the object; otherwise,false</returns>    public static bool Deserialize(string xml,out FOREIGN_OBJECT obj,out System.Exception exception)    {        exception = null;        obj = default(FOREIGN_OBJECT);        try        {            obj = Deserialize(xml);            return true;        }        catch (System.Exception ex)        {            exception = ex;            return false;        }    }    public static bool Deserialize(string xml,out FOREIGN_OBJECT obj)    {        System.Exception exception = null;        return Deserialize(xml,out obj,out exception);    }    public static FOREIGN_OBJECT Deserialize(string xml)    {        System.IO.StringReader stringReader = null;        try        {            stringReader = new System.IO.StringReader(xml);            return ((FOREIGN_OBJECT)(Serializer.Deserialize(System.Xml.XmlReader.Create(stringReader))));        }        finally        {            if ((stringReader != null))            {                stringReader.dispose();            }        }    }    /// <summary>    /// Serializes current FOREIGN_OBJECT object into file    /// </summary>    /// <param name="filename">full path of outupt xml file</param>    /// <param name="exception">output Exception value if Failed</param>    /// <returns>true if can serialize and save into file; otherwise,false</returns>    public virtual bool Savetofile(string filename,System.Text.EnCoding enCoding,out System.Exception exception)    {        exception = null;        try        {            Savetofile(filename,enCoding);            return true;        }        catch (System.Exception e)        {            exception = e;            return false;        }    }    public virtual bool Savetofile(string filename,out System.Exception exception)    {        return Savetofile(filename,EnCoding.UTF8,out exception);    }    public virtual voID Savetofile(string filename)    {        Savetofile(filename,EnCoding.UTF8);    }    public virtual voID Savetofile(string filename,System.Text.EnCoding enCoding)    {        System.IO.StreamWriter streamWriter = null;        try        {            string xmlString = Serialize(enCoding);            streamWriter = new System.IO.StreamWriter(filename,false,EnCoding.UTF8);            streamWriter.Writeline(xmlString);            streamWriter.Close();        }        finally        {            if ((streamWriter != null))            {                streamWriter.dispose();            }        }    }    /// <summary>    /// Deserializes xml markup from file into an FOREIGN_OBJECT object    /// </summary>    /// <param name="filename">string xml file to load and deserialize</param>    /// <param name="obj">Output FOREIGN_OBJECT object</param>    /// <param name="exception">output Exception value if deserialize Failed</param>    /// <returns>true if this XmlSerializer can deserialize the object; otherwise,false</returns>    public static bool LoadFromfile(string filename,out System.Exception exception)    {        exception = null;        obj = default(FOREIGN_OBJECT);        try        {            obj = LoadFromfile(filename,enCoding);            return true;        }        catch (System.Exception ex)        {            exception = ex;            return false;        }    }    public static bool LoadFromfile(string filename,out System.Exception exception)    {        return LoadFromfile(filename,out exception);    }    public static bool LoadFromfile(string filename,out FOREIGN_OBJECT obj)    {        System.Exception exception = null;        return LoadFromfile(filename,out exception);    }    public static FOREIGN_OBJECT LoadFromfile(string filename)    {        return LoadFromfile(filename,EnCoding.UTF8);    }    public static FOREIGN_OBJECT LoadFromfile(string filename,System.Text.EnCoding enCoding)    {        System.IO.fileStream file = null;        System.IO.StreamReader sr = null;        try        {            file = new System.IO.fileStream(filename,fileMode.Open,fileAccess.Read);            sr = new System.IO.StreamReader(file,enCoding);            string xmlString = sr.ReadToEnd();            sr.Close();            file.Close();            return Deserialize(xmlString);        }        finally        {            if ((file != null))            {                file.dispose();            }            if ((sr != null))            {                sr.dispose();            }        }    }    #endregion    #region Clone method    /// <summary>    /// Create a clone of this FOREIGN_OBJECT object    /// </summary>    public virtual FOREIGN_OBJECT Clone()    {        return ((FOREIGN_OBJECT)(this.MemberwiseClone()));    }    #endregion}

解决方法 仅当ChoiceIDentifIEr是一个数组而不是泛型列表时,才支持XmlChoiceIDentifIErAttribute中的多个元素.

[System.Xml.Serialization.XmlElementAttribute("ItemsElementname",Order = 1)][System.Xml.Serialization.XmlignoreAttribute()]public ItemsChoiceType[] ItemsElementname{    // ...}

该错误令人困惑,因为它假设Items是类似数组(A列表)并且您的选择标识符不是数组,您在选择标识符的类型之前错过了数组限定符.但事实并非如此,所以这个建议完全是误导性的.

注意：理论上看代码(来自微软源服务器)项不需要是数组……实际上,临时序列化类的生成完全爆炸,因为List.Length不是公共的(它是显式实现的)

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