标签：style blog http color 使用 os io 文件
把excel当成一个数据库，类似于Access数据库来操作。
/// <summary> /// 人员信息 /// </summary> public class MPerson { /// <summary> /// 人员姓名 /// </summary> public string PersonName { get; set; } /// <summary> /// 人员家乡 /// </summary> public string PersonHome { get; set; } }
/// <summary> /// 人员数据库访问接口 /// </summary> public interface IPerson { /// <summary> /// 获取所有人员信息 /// </summary> /// <param name="conn">连接</param> /// <param name="tran">事物</param> /// <returns>所有人员信息</returns> List<MPerson> GetAllPersonInfo(OleDbConnection conn, OleDbTransaction tran); /// <summary> /// 添加人员信息 /// </summary> /// <param name="conn">连接</param> /// <param name="tran">事物</param> /// <param name="person">人员信息</param> /// <returns>影响记录数</returns> int AddPerson(OleDbConnection conn, OleDbTransaction tran, MPerson person); /// <summary> /// 修改人员信息 /// </summary> /// <param name="conn">连接</param> /// <param name="tran">事物</param> /// <param name="model">人员</param> /// <returns>影响记录数</returns> int UpdatePerson(OleDbConnection conn, OleDbTransaction tran, MPerson model); /// <summary> /// 查询人员信息 /// </summary> /// <param name="conn">连接</param> /// <returns>所有人员信息</returns> List<MPerson> GetPersonInfo(OleDbConnection conn, OleDbTransaction tran, string personName); /// <summary> /// 删除人员信息【不支持】 /// </summary> /// <param name="conn">连接</param> /// <param name="tran">事物</param> /// <param name="model">人员</param> /// <returns>影响记录数</returns> //int DelPerson(OleDbConnection conn, OleDbTransaction tran, MPerson model); }
/// <summary> /// 人员信息数据库访问 /// </summary> public class DPerson : IPerson { #region IPerson 成员 /// <summary> /// 获取所有人员信息 /// </summary> /// <param name="conn">连接</param> /// <returns>所有人员信息</returns> public List<MPerson> GetAllPersonInfo(OleDbConnection conn, OleDbTransaction tran) { List<MPerson> list = new List<MPerson>(); string sql = "select PersonName,PersonHome from [PersonInfo$]"; OleDbCommand cmd = new OleDbCommand(sql, conn, tran); using (OleDbDataReader reader = cmd.ExecuteReader()) { while (reader.Read()) { MPerson model = new MPerson(); model.PersonName = reader["PersonName"] == DBNull.Value ? string.Empty : reader["PersonName"].ToString(); model.PersonHome = reader["PersonHome"] == DBNull.Value ? string.Empty : reader["PersonHome"].ToString(); list.Add(model); } } return list; } /// <summary> /// 查询所有人员信息 /// </summary> /// <param name="conn">连接</param> /// <returns>所有人员信息</returns> public List<MPerson> GetPersonInfo(OleDbConnection conn, OleDbTransaction tran, string personName) { List<MPerson> list = new List<MPerson>(); string sql = "SELECT PersonName,PersonHome from [PersonInfo$] WHERE PersonName = @PersonName"; OleDbCommand cmd = new OleDbCommand(sql, conn, tran); OleDbParameter[] para = { new OleDbParameter("@PersonName", personName.Trim()), }; cmd.Parameters.AddRange(para); using (OleDbDataReader reader = cmd.ExecuteReader()) { while (reader.Read()) { MPerson model = new MPerson(); model.PersonName = reader["PersonName"] == DBNull.Value ? string.Empty : reader["PersonName"].ToString(); model.PersonHome = reader["PersonHome"] == DBNull.Value ? string.Empty : reader["PersonHome"].ToString(); list.Add(model); } } return list; } /// <summary> /// 添加人员信息 /// </summary> /// <param name="conn">连接</param> /// <param name="person">人员信息</param> /// <returns>影响记录数</returns> public int AddPerson(OleDbConnection conn, OleDbTransaction tran, MPerson person) { string sql = @"INSERT INTO [PersonInfo$](PersonName, PersonHome) VALUES(@Name, @Home)"; OleDbParameter[] para = { new OleDbParameter("@Name", person.PersonName), new OleDbParameter("@Home", person.PersonHome) }; OleDbCommand cmd = null; cmd = new OleDbCommand(sql, conn, tran); cmd.Parameters.AddRange(para); return cmd.ExecuteNonQuery(); } /// <summary> /// 修改人员信息 /// </summary> /// <param name="conn">连接</param> /// <param name="tran">事物</param> /// <param name="model">人员</param> /// <returns>影响记录数</returns> public int UpdatePerson(OleDbConnection conn, OleDbTransaction tran, MPerson model) { string sql = string.Format(@" UPDATE [PersonInfo$] SET PersonHome=@PersonHome WHERE PersonName=‘{0}‘ ", model.PersonName); OleDbParameter[] para = { new OleDbParameter("@PersonHome", model.PersonHome.Trim()) }; OleDbCommand cmd = null; cmd = new OleDbCommand(sql, conn, tran); cmd.Parameters.AddRange(para); return cmd.ExecuteNonQuery(); } /// <summary> /// 删除人员信息【不支持】 /// </summary> /// <param name="conn">连接</param> /// <param name="tran">事物</param> /// <param name="model">人员</param> /// <returns>影响记录数</returns> // public int DelPerson(OleDbConnection conn, OleDbTransaction tran, MPerson model) // { // string sql = string.Format(@" // DELETE FROM [PersonInfo$] // WHERE PersonName=‘{0}‘ // ", model.PersonName); // OleDbCommand cmd = null; // cmd = new OleDbCommand(sql, conn, tran); // return cmd.ExecuteNonQuery(); // } #endregion }
/// <summary> /// 数据库链接工厂 /// </summary> public class ConnectionFactory { /// <summary> /// 基础数据读库 /// </summary> public static OleDbConnection BaseInfoDBRead { get { return GetConnection("BaseInfoDBRead"); } } /// <summary> /// 基础数据写库 /// </summary> public static OleDbConnection BaseInfoDBWrite { get { return GetConnection("BaseInfoDBWrite"); } } /// <summary> /// 根据连接字符串获取连接 /// </summary> /// <param name="connectionKey">连接键</param> /// <returns>连接</returns> public static OleDbConnection GetConnection(string connectionKey) { OleDbConnection connection = null; string connectionString = ConfigurationManager.ConnectionStrings[connectionKey].ConnectionString; connection = new OleDbConnection(connectionString); return connection; }
2.5 数据库访问工厂
/// <summary> /// 数据库访问工厂 /// </summary> public class DALFactory { /// <summary> /// 获取人员信息数据访问层 /// </summary> /// <returns>数据访问层</returns> public static IPerson GetPersonDao() { return new DPerson(); } }
/// <summary> /// 添加人员事物 /// </summary> public class BAddPersonsTrans : ExcelDbTransaction { /// <summary> /// 人员信息 /// </summary> private List<MPerson> personList = null; /// <summary> /// 构造函数 /// </summary> /// <param name="list">人员信息</param> public BAddPersonsTrans(List<MPerson> list) { this.personList = list; this.Connection = ConnectionFactory.BaseInfoDBWrite; this.IsolationLevel = System.Data.IsolationLevel.ReadCommitted; this.IsBeginTransation = true; } /// <summary> /// 是否成功 /// </summary> public bool IsSuccess { get; set; } /// <summary> /// 添加人员信息 /// </summary> protected override void ExecuteMethod() { IPerson personDao = DALFactory.GetPersonDao(); if (this.personList != null && this.personList.Count > 0) { foreach (MPerson item in this.personList) { personDao.AddPerson(this.Connection, this.Transation, item); } this.IsSuccess = true; } } }
/// <summary> /// 人员信息业务层 /// </summary> public class BPerson { /// <summary> /// 获取所有人员信息 /// </summary> /// <returns>所有人员信息</returns> public List<MPerson> GetAllPersonInfo() { IPerson dao = DALFactory.GetPersonDao(); OleDbConnection conn = ConnectionFactory.BaseInfoDBRead; try { if (conn.State == System.Data.ConnectionState.Closed) { conn.Open(); } return dao.GetAllPersonInfo(conn, null); } finally { conn.Close(); conn.Dispose(); } } /// <summary> /// 查询所有人员信息 /// </summary> /// <returns>所有人员信息</returns> public List<MPerson> GetPersonInfo(string personName) { IPerson dao = DALFactory.GetPersonDao(); OleDbConnection conn = ConnectionFactory.BaseInfoDBRead; try { if (conn.State == System.Data.ConnectionState.Closed) { conn.Open(); } return dao.GetPersonInfo(conn, null, personName); } finally { conn.Close(); conn.Dispose(); } } /// <summary> /// 添加人员列表 /// </summary> /// <param name="list">人员列表</param> /// <returns>是否成功</returns> public bool AddPersonList(List<MPerson> list) { BAddPersonsTrans tran = new BAddPersonsTrans(list); tran.Execute(); return tran.IsSuccess; } /// <summary> /// 修改人员信息 /// </summary> /// <param name="model">人员对象</param> /// <returns>影响数据库记录数</returns> public int UpdatePerson(MPerson model) { IPerson dao = DALFactory.GetPersonDao(); OleDbConnection conn = ConnectionFactory.BaseInfoDBWrite; try { if (conn.State == System.Data.ConnectionState.Closed) { conn.Open(); } return dao.UpdatePerson(conn, null, model); } finally { conn.Close(); conn.Dispose(); } } /// <summary> /// 删除人员信息【不支持】 /// </summary> /// <param name="model">人员对象</param> /// <returns>影响数据库记录数</returns> //public int DelPerson(MPerson model) //{ // IPerson dao = DALFactory.GetPersonDao(); // OleDbConnection conn = ConnectionFactory.BaseInfoDBWrite; // try // { // if (conn.State == System.Data.ConnectionState.Closed) // { // conn.Open(); // } // return dao.DelPerson(conn, null, model); // } // finally // { // conn.Close(); // conn.Dispose(); // } //} }
App.config配置如下：
<?xml version="1.0" encoding="utf-8" ?> <configuration> <connectionStrings> <add name="BaseInfoDBRead" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=BaseInfoDB.xls;Extended Properties=‘Excel 8.0;HDR=YES;IMEX=2‘"/> <add name="BaseInfoDBWrite" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=BaseInfoDB.xls;Extended Properties=‘Excel 8.0;HDR=YES;IMEX=2‘"/> </connectionStrings> </configuration>
/// <summary> /// 测试 /// </summary> public class Test { /// <summary> /// 测试获取人员信息 /// </summary> public static void TestGetAllPerson() { try { BPerson bll = new BPerson(); List<MPerson> personList = bll.GetAllPersonInfo(); if (personList != null && personList.Count > 0) { foreach (MPerson item in personList) { Console.WriteLine(item.PersonName + "," + item.PersonHome); } } } catch (Exception ex) { string str = ex.ToString(); Console.WriteLine(str); } } /// <summary> /// 测试添加人员列表 /// </summary> public static void AddPersonList() { try { BPerson bll = new BPerson(); MPerson model = new MPerson(); model.PersonName = "艾玛"; model.PersonHome = "美国"; List<MPerson> list = new List<MPerson>(); list.Add(model); model = new MPerson(); model.PersonName = "汤姆"; model.PersonHome = "美国"; list.Add(model); bool result = bll.AddPersonList(list); Console.WriteLine(result); } catch (Exception ex) { Console.WriteLine(ex.ToString()); } } /// <summary> /// 测试修改 /// </summary> public static void UpdatePerson() { try { MPerson model = new MPerson(); model.PersonName = "张三"; model.PersonHome = "上海"; BPerson bll = new BPerson(); int result = bll.UpdatePerson(model); Console.WriteLine("结果:" + result); } catch (Exception ex) { Console.WriteLine(ex.ToString()); } } /// <summary> /// 测试删除 /// </summary> //public static void DelPerson() //{ // try // { // MPerson model = new MPerson(); // model.PersonName = "张三"; // BPerson bll = new BPerson(); // int result = bll.DelPerson(model); // Console.WriteLine("结果:" + result); // } // catch (Exception ex) // { // Console.WriteLine(ex.ToString()); // } //} }
BaseInfoDB.xls，注意将属性设置为始终复制
格式如下：
注意抬头部分一定是：PersonName,PersonHome
（1）首先，上面虽然写到事物，但是事物确不能生效，也就是要不全部执行成功，要不全部执行失败，在网上找了很久，发现代码没什么大问题，但是不能实现效果，很是郁闷，还是把代码贴出来，万一以后就知道怎么回事了呢？
（2）修改的时候，不知道为什么不能在where语句中使用参数，只能使用拼sql，才执行成功，我在查询的时候试了一下，发现可以在where语句中使用参数，不知道这里为什么不行。
（3）、另外不能进行删除操作。报出来得错误信息是：该ISAM不支持在连接表中删除数据。网上查了一下确实是不支持删除。如果要删除就只能使用修改，在查询的使用进行处理。
标签：style blog http color 使用 os io 文件
原文地址：http://www.cnblogs.com/tianxue/p/3918888.html
