Winform 调用WCF客户端，所有服务端方法在运行的时候均找不到（编译没有问题）

来源：互联网发布：37传奇霸业炼体数据编辑：程序博客网时间：2024/05/17 01:20

作者：jiankunking 出处：http://blog.csdn.net/jiankunking

今天在开发过程中遇到了一个很恶心的问题，就是Form窗体ShowDialog的时候，直接报出下面的错误：

有关调用实时(JIT)调试而不是此对话框的详细信息，请参见此消息的结尾。************** 异常文本 **************System.MissingMethodException: 找不到方法:“XXX.XXX.DataObject.SPI.DataObjectColumn[] XXX.XXX.WCFClient.WCFService.ServiceClient.DataColumn_GetListByDOID(System.String)”。   在 XXX.XXX.Common.CommonHelp.UI.HelpForm.HelpDisplayEditorForm_Load(Object sender, EventArgs e)   在 System.Windows.Forms.Form.OnLoad(EventArgs e)   在 System.Windows.Forms.Form.OnCreateControl()   在 System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)   在 System.Windows.Forms.Control.CreateControl()   在 System.Windows.Forms.Control.WmShowWindow(Message& m)   在 System.Windows.Forms.Control.WndProc(Message& m)   在 System.Windows.Forms.ScrollableControl.WndProc(Message& m)   在 System.Windows.Forms.Form.WmShowWindow(Message& m)   在 System.Windows.Forms.Form.WndProc(Message& m)   在 System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)   在 System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)   在 System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

将断点加在HelpDisplayEditorForm_Load函数上发现，根本进不到函数内部，就报错了。

个人认为是Form窗体在ShowDialog函数之后，HelpDisplayEditorForm_Load函数之前发生的异常，于是上网搜资料，看微软的源码，也没什么收获。

于是，咨询了一下同事，同事说把HelpDisplayEditorForm_Load中的所有代码屏蔽掉，看看效果。

我把HelpDisplayEditorForm_Load内所有代码屏蔽到以后，断点可以进入HelpDisplayEditorForm_Load函数内部了，然后，一部分一部分代码的放开，发现，只要到需要调用服务端方法的时候，就会报出上面的错误（所有调用WCF服务端方法的地方都会报错）。

更新过错误提示的dll（通过dll反编译发现错误提示的函数在dll中是存在的），重启过iis等等N过方法之后，还有木有搞定。

由于，是所有WCF服务端方法均不可用，于是回头研究WCF客户端，发现WCF客户端有问题，有人在获取WCF服务端方法的时候，WCF将服务契约标识方法入参中的自定义类型、返回值是自定义类型的，均隐式进行了实体类序列化（此处的序列化指的是，将自定义类型的实体，标识成了WCF数据契约的类型）。

比如SPI中的实体类如下：

using System.Data;namespace XXXX.XXXX.Common.CommonHelp.SPI{    /// <summary>    /// 智能帮助数据实体类    /// 对应数据库：[A_CommonHelp]    /// </summary>    public class CommonHelpDataEntity    {        /// <summary>        /// HelpEntity 是一个指针 标明该CommonHelpDataEntity属于哪一个CommonHelpEntity        /// </summary>        private CommonHelpEntity entity;        public CommonHelpEntity HelpEntity        {            get { return entity; }        }        private string displayColumns;        /// <summary>        /// 显示字段        /// </summary>        public string DisplayColumns        {            get { return displayColumns; }            set { displayColumns = value; }        }        private string sourceObject;        /// <summary>        /// 源SQL语句        /// </summary>        public string SourceObject        {            get { return sourceObject; }            set { sourceObject = value; }        }        private string dataTextField;        /// <summary>        /// 绑定Text字段        /// </summary>        public string DataTextField        {            get { return dataTextField; }            set { dataTextField = value; }        }        private string dataValueField;        /// <summary>        /// 绑定Value字段        /// </summary>        public string DataValueField        {            get { return dataValueField; }            set { dataValueField = value; }        }        private string orderFields;        /// <summary>        /// 默认排序字段        /// </summary>        public string OrderFields        {            get { return orderFields; }            set { orderFields = value; }        }        public string rowId;        /// <summary>        /// 标志字段        /// </summary>        public string RowId        {            get { return rowId; }            set { rowId = value; }        }        private string defaultValueCondition;        /// <summary>        /// 默认值条件        /// </summary>        public string DefaultValueCondition        {            get { return defaultValueCondition; }            set { defaultValueCondition = value; }        }        private string category;        /// <summary>        /// 帮助类别        /// </summary>        public string Category        {            get { return category; }            set { category = value; }        }        private string selectDataObjectId;        /// <summary>        /// 搜索引擎类型帮助勾选的数据对象的Id        /// </summary>        public string SelectDataObjectId        {            get { return selectDataObjectId; }            set { selectDataObjectId = value; }        }        private string searchEngineId;        /// <summary>        /// 搜索引擎帮助A_SearchEngine ID        /// </summary>        public string SearchEngineId        {            get { return searchEngineId; }            set { searchEngineId = value; }        }        private string dataModeldId;        /// <summary>        /// 数据模型Id        /// </summary>        public string DataModeldId        {            get { return dataModeldId; }            set { dataModeldId = value; }        }        private string createTime;        /// <summary>        /// 帮助创建时间        /// </summary>        public string CreateTime        {            get { return createTime; }            set { createTime = value; }        }        private string lastUpdateTime;        /// <summary>        /// 帮助 最后更新时间        /// </summary>        public string LastUpdateTime        {            get { return lastUpdateTime; }            set { lastUpdateTime = value; }        }        public CommonHelpDataEntity()        {            entity = new CommonHelpEntity();            entity.SetDataEntity(this);        }        public CommonHelpDataEntity(CommonHelpEntity info)        {            entity = info;            entity.SetDataEntity(this);        }        public CommonHelpDataEntity(DataRow row)        {            entity=new CommonHelpEntity();            entity.Id = row["Id"].ToString();            entity.Code = row["Code"].ToString();            entity.Name = row["Name"].ToString();            entity.Contains = row["DisplayColumns"].ToString();            entity.SetDataEntity(this);            this.DisplayColumns = row["DisplayColumns"].ToString();            this.SourceObject = row["SourceObject"].ToString();            this.DataTextField = row["DataTextField"].ToString();            this.DataValueField = row["DataValueField"].ToString();            this.OrderFields = row["OrderFields"].ToString();            this.RowId = row["Id"].ToString();            //int value=(row["Category"].ToString().Trim().Length==0)?0:int.Parse(row["Category"].ToString());            //this.Category = Enum.GetName(typeof(HelpTypeEnum), value);            this.Category = row["Category"].ToString();            this.SearchEngineId = row["SearchEngineId"].ToString();            this.SelectDataObjectId = row["SelectDataObjectId"].ToString();            this.DefaultValueCondition = row["DefaultValueCondition"].ToString();            this.CreateTime = row["CreateTime"].ToString();            this.lastUpdateTime = row["lastUpdateTime"].ToString();            this.dataModeldId = row["DataModeldId"].ToString();                   }        /// <summary>        /// 关联数据实体        /// </summary>        /// <param name="entity"></param>        public void AssociateHelpEntity(CommonHelpEntity entity)        {            entity.SetDataEntity(this);            this.entity = entity;        }    }}

标识序列化之后的类的为：

 [System.Diagnostics.DebuggerStepThroughAttribute()]    [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Runtime.Serialization", "4.0.0.0")]    [System.Runtime.Serialization.DataContractAttribute(Name="CommonHelpDataEntity", Namespace="http://schemas.datacontract.org/2004/07/XXXX.XXXX.Common.CommonHelp.SPI")]    [System.SerializableAttribute()]    public partial class CommonHelpDataEntity : object, System.Runtime.Serialization.IExtensibleDataObject, System.ComponentModel.INotifyPropertyChanged {                [System.NonSerializedAttribute()]        private System.Runtime.Serialization.ExtensionDataObject extensionDataField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string CategoryField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string CreateTimeField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string DataTextFieldField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string DataValueFieldField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string DefaultValueConditionField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string DisplayColumnsField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string LastUpdateTimeField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string OrderFieldsField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string RowIdField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string SearchEngineIdField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string SelectDataObjectIdField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string SourceObjectField;                [System.Runtime.Serialization.OptionalFieldAttribute()]        private string rowId1Field;                [global::System.ComponentModel.BrowsableAttribute(false)]        public System.Runtime.Serialization.ExtensionDataObject ExtensionData {            get {                return this.extensionDataField;            }            set {                this.extensionDataField = value;            }        }                [System.Runtime.Serialization.DataMemberAttribute()]        public string Category {            get {                return this.CategoryField;            }            set {                if ((object.ReferenceEquals(this.CategoryField, value) != true)) {                    this.CategoryField = value;                    this.RaisePropertyChanged("Category");                }            }        }                [System.Runtime.Serialization.DataMemberAttribute()]        public string CreateTime {            get {                return this.CreateTimeField;            }            set {                if ((object.ReferenceEquals(this.CreateTimeField, value) != true)) {                    this.CreateTimeField = value;                    this.RaisePropertyChanged("CreateTime");                }            }        }                [System.Runtime.Serialization.DataMemberAttribute()]        public string DataTextField {            get {                return this.DataTextFieldField;            }            set {                if ((object.ReferenceEquals(this.DataTextFieldField, value) != true)) {                    this.DataTextFieldField = value;                    this.RaisePropertyChanged("DataTextField");                }            }        }                [System.Runtime.Serialization.DataMemberAttribute()]        public string DataValueField {            get {                return this.DataValueFieldField;            }            set {                if ((object.ReferenceEquals(this.DataValueFieldField, value) != true)) {                    this.DataValueFieldField = value;                    this.RaisePropertyChanged("DataValueField");                }            }        }                [System.Runtime.Serialization.DataMemberAttribute()]        public string DefaultValueCondition {            get {                return this.DefaultValueConditionField;            }            set {                if ((object.ReferenceEquals(this.DefaultValueConditionField, value) != true)) {                    this.DefaultValueConditionField = value;                    this.RaisePropertyChanged("DefaultValueCondition");                }            }        }                [System.Runtime.Serialization.DataMemberAttribute()]        public string DisplayColumns {            get {                return this.DisplayColumnsField;            }            set {                if ((object.ReferenceEquals(this.DisplayColumnsField, value) != true)) {                    this.DisplayColumnsField = value;                    this.RaisePropertyChanged("DisplayColumns");                }            }        }                [System.Runtime.Serialization.DataMemberAttribute()]        public string LastUpdateTime {            get {                return this.LastUpdateTimeField;            }            set {                if ((object.ReferenceEquals(this.LastUpdateTimeField, value) != true)) {                    this.LastUpdateTimeField = value;                    this.RaisePropertyChanged("LastUpdateTime");                }            }        }                [System.Runtime.Serialization.DataMemberAttribute()]        public string OrderFields {            get {                return this.OrderFieldsField;            }            set {                if ((object.ReferenceEquals(this.OrderFieldsField, value) != true)) {                    this.OrderFieldsField = value;                    this.RaisePropertyChanged("OrderFields");                }            }        }                [System.Runtime.Serialization.DataMemberAttribute()]        public string RowId {            get {                return this.RowIdField;            }            set {                if ((object.ReferenceEquals(this.RowIdField, value) != true)) {                    this.RowIdField = value;                    this.RaisePropertyChanged("RowId");                }            }        }                [System.Runtime.Serialization.DataMemberAttribute()]        public string SearchEngineId {            get {                return this.SearchEngineIdField;            }            set {                if ((object.ReferenceEquals(this.SearchEngineIdField, value) != true)) {                    this.SearchEngineIdField = value;                    this.RaisePropertyChanged("SearchEngineId");                }            }        }                [System.Runtime.Serialization.DataMemberAttribute()]        public string SelectDataObjectId {            get {                return this.SelectDataObjectIdField;            }            set {                if ((object.ReferenceEquals(this.SelectDataObjectIdField, value) != true)) {                    this.SelectDataObjectIdField = value;                    this.RaisePropertyChanged("SelectDataObjectId");                }            }        }                [System.Runtime.Serialization.DataMemberAttribute()]        public string SourceObject {            get {                return this.SourceObjectField;            }            set {                if ((object.ReferenceEquals(this.SourceObjectField, value) != true)) {                    this.SourceObjectField = value;                    this.RaisePropertyChanged("SourceObject");                }            }        }                [System.Runtime.Serialization.DataMemberAttribute(Name="rowId")]        public string rowId1 {            get {                return this.rowId1Field;            }            set {                if ((object.ReferenceEquals(this.rowId1Field, value) != true)) {                    this.rowId1Field = value;                    this.RaisePropertyChanged("rowId1");                }            }        }                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));            }        }    }

该标识序列化之后的类在是Reference.cs文件中找到的。

此处的详细分析，可以参考：点击打开链接

解决方案：

将Reference.cs文件所有标识序列化的类、枚举，全部删除，改为引用SPI中的实体类、枚举，然后，重新生成WCFClient，部署，问题搞定。
今天的收获：

1、断点没有进入函数（HelpDisplayEditorForm_Load），并不表示问题，一定在函数之外。

2、数据契约中KnownTypeAttribute属性，在同一个类上标识很多次，如下图：

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