实体和实体的集合-续2
前几天写的实体和实体集合的代码,最后发现只能xml序列化,不能做soap的序列化。就更改了一下
现在一个实体分为四个类,以OrderInfo为例,四个类分别是
- OrderInfo : IEditableObject,IDataErrorInfo——实体类基本类,支持soap序列化
- OrderInfoEx : OrderInfo,IEditableObject——实体类扩展,不支持soap序列化,但是进一步支持数据绑定
- OrderInfoCollection : CollectionBase——实体集合类,支持soap序列化
- OrderInfoCollectionEx : OrderInfoCollection,IBindingList——实体集合扩展,支持数据绑定接口
其中1,3配合使用,用于web模式,支持soap序列化,webservice等,
2,4配合使用,用于winform模式,支持数据绑定等。基本和扩展之间可以互相进行类型转换。
下面是具体的代码,有点长,但是结构应该还是比较清楚的。
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using System;
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using System.Data;
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using System.Collections;
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using System.ComponentModel;
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namespace Entity
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{
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/// <summary>
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/// Order的描述
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/// </summary>
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[Serializable]
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public class OrderInfo : IEditableObject,IDataErrorInfo
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{
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#region 实体 结构体
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/// <summary>
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/// 类OrderInfo的实体结构体
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/// </summary>
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[Serializable]
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internal struct OrderInfoData
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{
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internal string _id;
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internal string _name;
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}
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#endregion
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#region 私有变量
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internal OrderInfoData custData; //类实体的值
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internal OrderInfoData backupData; //类实体的备份值(用于CancelEdit的时候的恢复)
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internal bool mEditing = false; //是否处于编辑状态
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internal bool mIsNew = true; //是否是新建状态
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#endregion
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#region 构造函数
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/// <summary>
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/// 默认构造函数
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/// </summary>
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public OrderInfo():base()
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{
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this.custData = new OrderInfoData();
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this.custData._id = "";
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this.custData._name = "";
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}
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/// <summary>
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/// 构造函数,所有公开属性赋值
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/// </summary>
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/// <param name="m_id">属性ID的描述</param>
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/// <param name="m_name">属性Name的描述</param>
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public OrderInfo(string m_id,string m_name)
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{
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this.custData = new OrderInfoData();
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this.custData._id = m_id;
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this.custData._name = m_name;
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}
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/// <summary>
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/// 使用只读只进的数据流的构造函数
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/// </summary>
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/// <param name="dr">只读只进的数据流</param>
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public OrderInfo(IDataRecord dr)
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{
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this.custData = new OrderInfoData();
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if (dr["id"] != DBNull.Value) this.custData._id = dr["id"].ToString();
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else this.custData._id = "";
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if (dr["name"] != DBNull.Value) this.custData._name = dr["name"].ToString();
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else this.custData._name = "";
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}
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#endregion
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#region 实体属性
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/// <summary>
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/// 属性ID的描述
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/// </summary>
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public string ID
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{
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get{return this.custData._id;}
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set{this.custData._id = value;}
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}
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/// <summary>
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/// 属性Name的描述
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/// </summary>
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public string Name
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{
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get{return this.custData._name;}
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set{this.custData._name = value;}
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}
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#endregion
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#region IEditableObject 成员
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public void EndEdit()
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{
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if (mEditing)
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{
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mEditing = false;
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mIsNew = false;
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}
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}
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public void CancelEdit()
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{
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if (mEditing)
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{
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mEditing = false;
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this.custData = backupData;
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if(mIsNew)
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{
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mIsNew = false;
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}
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}
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}
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public void BeginEdit()
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{
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if (!mEditing)
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{
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mEditing = true;
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this.backupData = custData;
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}
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}
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#endregion
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#region IDataErrorInfo 成员
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public string Error
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{
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get{return "";}
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}
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public string this[string strErrorName]
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{
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get{return "";}
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}
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#endregion
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}
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}
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1
using System;
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using System.Data;
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using System.Collections;
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using System.ComponentModel;
5![](/Images/OutliningIndicators/None.gif)
6
namespace Entity
7
{
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/// <summary>
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/// OrderInfo的扩展类,用于支持IBindList接口
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/// </summary>
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[Serializable]
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public class OrderInfoEx : OrderInfo,IEditableObject
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{
14![](/Images/OutliningIndicators/InBlock.gif)
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#region 构造函数
16![](/Images/OutliningIndicators/InBlock.gif)
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/// <summary>
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/// 默认构造函数
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/// </summary>
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public OrderInfoEx():base(){}
21![](/Images/OutliningIndicators/InBlock.gif)
22![](/Images/OutliningIndicators/InBlock.gif)
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/// <summary>
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/// 构造函数,所有公开属性赋值
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/// </summary>
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/// <param name="m_id">属性ID的描述</param>
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/// <param name="m_name">属性Name的描述</param>
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public OrderInfoEx(string m_id,string m_name) : base ( m_id, m_name){}
29![](/Images/OutliningIndicators/InBlock.gif)
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/// <summary>
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/// 使用只读只进的数据流的构造函数
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/// </summary>
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/// <param name="dr">只读只进的数据流</param>
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public OrderInfoEx(IDataRecord dr) : base(dr) {}
35![](/Images/OutliningIndicators/InBlock.gif)
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#endregion
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internal class OrderInfoEventArgs : EventArgs
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{
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// 定义事件成员,用于提供有关事件的信息
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}
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internal delegate void OrderInfoEventHandler(Object source, OrderInfoEventArgs e);
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internal event OrderInfoEventHandler RemoveMe;
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public new void CancelEdit()
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{
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if (mEditing)
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{
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mEditing = false;
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this.custData = backupData;
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if(mIsNew)
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{
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mIsNew = false;
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RemoveMe(this, new OrderInfoEventArgs());
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}
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}
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}
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}
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}
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