Remoting系列专题－－－自定义序列化类

最近项目开发中的传输数据是围绕Remoting而召开的，所以想把所有的数据实体都定义统一的格式，于是就写了一个基于DataTable的基类BaseModal，其他数据实体全部继承于它。此BaseModal基类还包括了一些其他的自有的属性，例如pageSize每页记录数、currentPage当前页码等等，代码如下：

  1
  2文件描述#region 文件描述
  3// -------------------------------------------------------------------------------------------------
  4// 文 件 名：BaseModel.cs
  5// 创 建 者：李毅
  6// 创建日期：2006年06月13日
  7// 命名空间：Colorful.Model
  8// 类    型：BaseModel类
  9// 版    本：1.0.0
 10// 描    述：数据基本表
 11// -------------------------------------------------------------------------------------------------
 12#endregion
 13
 14修改记录#region 修改记录
 15// -------------------------------------------------------------------------------------------------
 16// 修改日期：
 17// 修 改 者：
 18// 修 改 项：
 19// -------------------------------------------------------------------------------------------------
 20#endregion
 21
 22using System;
 23using System.Data;
 24using System.Text;
 25using System.Runtime.Serialization;
 26
 27namespace Colorful.Model
 28{
 29    /**//// <summary>
 30    /// 数据基本表
 31    /// </summary>
 32    [Serializable]
 33    public class BaseModel : DataTable
 34    {
 35        protected   int     index;          //记录当前行
 36        protected   int     pageSize;       //每页记录数
 37        protected   int     currentPage;    //当前页码
 38        protected   int     pages;          //总页数
 39        protected   long    totalRecord;    //总记录数
 40        protected string description;    //其他描述，及其辅助功能
 41
 42        public int PageSize#region public int PageSize
 43        // -----------------------------------------------------------------------------------------
 44        /**//// <summary>
 45        /// 设置或者获取每页记录数
 46        /// </summary>
 47        public int PageSize
 48        {
 49            get { return pageSize; }
 50            set { pageSize = value; }
 51        }
 52        // -----------------------------------------------------------------------------------------
 53        #endregion
 54
 55        public int CurrentPage#region public int CurrentPage
 56        // -----------------------------------------------------------------------------------------
 57        /**//// <summary>
 58        /// 设置或者获取当前页码
 59        /// </summary>
 60        public int CurrentPage
 61        {
 62            get { return currentPage; }
 63            set { currentPage = value; }
 64        }
 65        // -----------------------------------------------------------------------------------------
 66        #endregion
 67
 68        public int Pages#region public int Pages
 69        // -----------------------------------------------------------------------------------------
 70        /**//// <summary>
 71        /// 设置或者获取总页数
 72        /// </summary>
 73        public int Pages
 74        {
 75            get { return pages; }
 76            set { pages = value; }
 77        }
 78        // -----------------------------------------------------------------------------------------
 79        #endregion
 80
 81        public long TotalRecord#region public long TotalRecord
 82        // -----------------------------------------------------------------------------------------
 83        /**//// <summary>
 84        /// 设置或者获取总记录数
 85        /// </summary>
 86        public long TotalRecord
 87        {
 88            get { return totalRecord; }
 89            set { totalRecord = value; }
 90        }
 91        // -----------------------------------------------------------------------------------------
 92        #endregion
 93
 94        public string Description#region public string Description
 95        // -----------------------------------------------------------------------------------------
 96        /**//// <summary>
 97        /// 其他描述
 98        /// </summary>
 99        public string Description
100        {
101            get { return description; }
102            set { description = value; }
103        }
104        // -----------------------------------------------------------------------------------------
105        #endregion
106
107        public string GUID#region public string GUID
108        // -----------------------------------------------------------------------------------------
109        /**//// <summary>
110        /// 设置或获取当前表记录ID
111        /// </summary>
112        public string GUID
113        {
114            get
115            {
116                return index == -1 ? "" : Rows[index]["GUID"].ToString();
117            }
118            set
119            {
120                if (index > -1)
121                {
122                    Rows[index]["GUID"] = value;
123                }
124            }
125        }
126        // -----------------------------------------------------------------------------------------
127        #endregion
128
129        
130
131        public BaseModel()#region public BaseModel()
132        // -----------------------------------------------------------------------------------------
133        /**//// <summary>
134        /// 构造函数
135        /// </summary>
136        public BaseModel()
137        {
138            index = -1;
139            pageSize = 20;
140            currentPage = 1;
141            pages = 1;
142            totalRecord = 0;
143            description = "";
144
145            Columns.Add("GUID", typeof(string));
146        }
147        // -----------------------------------------------------------------------------------------
148        #endregion
149
150        public bool MoveNext()#region public bool MoveNext()
151        // -----------------------------------------------------------------------------------------
152        /**//// <summary>
153        /// 向后移动一行
154        /// </summary>
155        public bool MoveNext()
156        {
157            if (index < Rows.Count - 1)
158            {
159                index++;
160                return true;
161            }
162            return false;
163        }
164        // -----------------------------------------------------------------------------------------
165        #endregion
166
167        public bool MovePre()#region public bool MovePre()
168        // -----------------------------------------------------------------------------------------
169        /**//// <summary>
170        /// 向前移动一行
171        /// </summary>
172        public bool MovePre()
173        {
174            if (index > 1)
175            {
176                index--;
177                return true;
178            }
179            return false;
180        }
181        // -----------------------------------------------------------------------------------------
182        #endregion
183
184        public bool GoToRow(int rowIndex)#region public bool GoToRow(int rowIndex)
185        // -----------------------------------------------------------------------------------------
186        /**//// <summary>
187        /// 转到指定行
188        /// </summary>
189        /// <param name="rowIndex">行号，0为第一行</param>
190        /// <returns>返回是否定位成功</returns>
191        public bool GoToRow(int rowIndex)
192        {
193            if (rowIndex > -1 && rowIndex < Rows.Count)
194            {
195                this.index = rowIndex;
196                return true;
197            }
198            return false;
199        }
200        // -----------------------------------------------------------------------------------------
201        #endregion
202
203        public bool GoToFirst()#region public bool GoToFirst()
204        // -----------------------------------------------------------------------------------------
205        /**//// <summary>
206        /// 转到首行
207        /// </summary>
208        /// <returns>返回是否定位成功</returns>
209        public bool GoToFirst()
210        {
211            if (Rows.Count > 0)
212            {
213                this.index = 0;
214                return true;
215            }
216            return false;
217        }
218        // -----------------------------------------------------------------------------------------
219        #endregion
220
221        public bool GoToLast()#region public bool GoToLast()
222        // -----------------------------------------------------------------------------------------
223        /**//// <summary>
224        /// 转到尾行
225        /// </summary>
226        /// <returns>返回是否定位成功</returns>
227        public bool GoToLast()
228        {
229            if (Rows.Count > 0)
230            {
231                this.index = Rows.Count - 1;
232                return true;
233            }
234            return false;
235        }
236        // -----------------------------------------------------------------------------------------
237        #endregion
238
239        public void Insert()#region public void Insert()
240        // -----------------------------------------------------------------------------------------
241        /**//// <summary>
242        /// 插入空行，并把空行当作当前行
243        /// </summary>
244        public void Insert()
245        {
246            Rows.Add(NewRow());
247            index = Rows.Count - 1;
248        }
249        // -----------------------------------------------------------------------------------------
250        #endregion
251
252        public void Delete()#region public void Delete()
253        // -----------------------------------------------------------------------------------------
254        /**//// <summary>
255        /// 删除当前行
256        /// </summary>
257        public void Delete()
258        {
259            if (index > -1)
260            {
261                Rows[index].Delete();
262                if (index == Rows.Count)
263                {
264                    index = Rows.Count - 1;
265                }
266            }
267        }
268        // -----------------------------------------------------------------------------------------
269        #endregion
270
271        }
272}
273

结果发现数据在放序列化的时候出错，发现原来是没有加入序列化和反序列化构造函数，虽然BaseModal继承于DataTable，并且加入了[Serializable]树序列化属性，但是要实现想继承序列化，还是要加入构造函数，于是加入：

 1protected BaseModel(SerializationInfo info, StreamingContext context) : base(info, context)#region protected BaseModel(SerializationInfo info, StreamingContext context) : base(info, context)
 2        // -----------------------------------------------------------------------------------------
 3        /**//// <summary>
 4        /// 反序列化构造函数
 5        /// </summary>
 6        /// <param name="si">反序列化所需的全部数据</param>
 7        /// <param name="context">目标描述</param>
 8        protected BaseModel(SerializationInfo info, StreamingContext context) : base(info, context)
 9        {
10        }
11        // -----------------------------------------------------------------------------------------
12        #endregion
13
14        public override void GetObjectData(SerializationInfo info, StreamingContext context)#region public override void GetObjectData(SerializationInfo info, StreamingContext context)
15        // -----------------------------------------------------------------------------------------
16        /**//// <summary>
17        /// 序列化函数
18        /// </summary>
19        /// <param name="info">序列化所需的全部数据</param>
20        /// <param name="context">目标描述</param>
21        public override void GetObjectData(SerializationInfo info, StreamingContext context)：base.GetObjectData(info, context)
22        {
23         }
24        // -----------------------------------------------------------------------------------------
25        #endregion

结果编译，没有任何错误，但是类中的属性（pageSize等）值却获取不到，想了很久，发现其实道理跟前面有些类似，因为自己加入的属性根本就没有“告诉”序列化函数去处理，自然而然值就丢失了，于是修改函数如下：

 1protected BaseModel(SerializationInfo info, StreamingContext context) : base(info, context)#region protected BaseModel(SerializationInfo info, StreamingContext context) : base(info, context)
 2        // -----------------------------------------------------------------------------------------
 3        /**//// <summary>
 4        /// 反序列化构造函数
 5        /// </summary>
 6        /// <param name="si">反序列化所需的全部数据</param>
 7        /// <param name="context">目标描述</param>
 8        protected BaseModel(SerializationInfo info, StreamingContext context) : base(info, context)
 9        {
10            index = info.GetInt32("index");
11            pageSize = info.GetInt32("pageSize");
12            currentPage = info.GetInt32("currentPage");
13            pages = info.GetInt32("pages");
14            totalRecord = info.GetInt64("totalRecord");
15            description = info.GetString("description");
16        }
17        // -----------------------------------------------------------------------------------------
18        #endregion
19
20        public override void GetObjectData(SerializationInfo info, StreamingContext context)#region public override void GetObjectData(SerializationInfo info, StreamingContext context)
21        // -----------------------------------------------------------------------------------------
22        /**//// <summary>
23        /// 序列化函数
24        /// </summary>
25        /// <param name="info">序列化所需的全部数据</param>
26        /// <param name="context">目标描述</param>
27        public override void GetObjectData(SerializationInfo info, StreamingContext context)
28        {
29            info.AddValue("index", index);
30            info.AddValue("pageSize", pageSize);
31            info.AddValue("currentPage", currentPage);
32            info.AddValue("pages", pages);
33            info.AddValue("totalRecord", totalRecord);
34            info.AddValue("description", description);
35            base.GetObjectData(info, context);
36        }
37        // -----------------------------------------------------------------------------------------
38        #endregion

OK，一切搞定了