C#操作数据库（2）

//由于最近和数据库打交道,需要用C#和SQL Server 2005进行操作,就把近段时间内的最常用的操作做个总结.本人也是第一次用C#操作数据库,所以这三种典型用法对初学者还///是挺有帮助的.//       以下是我在visual studio 2005上写的一个类(连的是SQL Server 2005),已经过测试通过.里面有3个方法比较典型,在此把源码贴出:using System;using System.Collections.Generic;using System.Text;using System.Data;using System.Data.SqlClient; namespace DatabaSEOperate{    class SqlOperateInfo    {        //Suppose your ServerName is "aa",DatabaseName is "bb",UserName is "cc", PassWord is "dd"        PRivate string sqlConnectionCommand = "Data Source=aa;Initial Catalog=bb;User ID=cc;Pwd=dd";        //This table contains two columns:KeywordID int not null,KeywordName varchar(100) not null        private string dataTableName = "Basic_Keyword_Test";         private string storedProcedureName = "Sp_InertToBasic_Keyword_Test";        private string sqlSelectCommand = "Select KeywordID, KeywordName From Basic_Keyword_Test";        //sqlUpdateCommand could contain "insert" , "delete" , "update" operate        private string sqlUpdateCommand = "Delete From Basic_Keyword_Test Where KeywordID = 1";         public void UseSqlReader()        {            SqlConnection sqlConnection = new SqlConnection(sqlConnectionCommand);            SqlCommand sqlCommand = new SqlCommand();            sqlCommand.CommandType = System.Data.CommandType.Text;            sqlCommand.Connection = sqlConnection;            sqlCommand.CommandText = sqlSelectCommand;             sqlConnection.Open();            SqlDataReader sqlDataReader = sqlCommand.ExecuteReader();            while(sqlDataReader.Read())            {                //Get KeywordID and KeywordName , You can do anything you like. Here I just output them.                int keywordid = (int)sqlDataReader[0];                 //the same as: int keywordid = (int)sqlDataReader["KeywordID"]                string keywordName = (string)sqlDataReader[1];                 //the same as: string keywordName = (int)sqlDataReader["KeywordName"]                Console.WriteLine("KeywordID = " + keywordid + " , KeywordName = " + keywordName);            }             sqlDataReader.Close();            sqlCommand.Dispose();            sqlConnection.Close();        }        public void UseSqlStoredProcedure()        {            SqlConnection sqlConnection = new SqlConnection(sqlConnectionCommand);            SqlCommand sqlCommand = new SqlCommand();            sqlCommand.CommandType = CommandType.StoredProcedure;            sqlCommand.Connection = sqlConnection;            sqlCommand.CommandText = storedProcedureName;             sqlConnection.Open();            sqlCommand.ExecuteNonQuery();            //you can use reader here,too.as long as you modify the sp and let it like select * from ....             sqlCommand.Dispose();            sqlConnection.Close();        }        public void UseSqlDataSet()        {            SqlConnection sqlConnection = new SqlConnection(sqlConnectionCommand);            SqlCommand sqlCommand = new SqlCommand();            sqlCommand.CommandType = System.Data.CommandType.Text;            sqlCommand.Connection = sqlConnection;            sqlCommand.CommandText = sqlSelectCommand;             sqlConnection.Open();            SqlDataAdapter sqlDataAdapter = new SqlDataAdapter();            sqlDataAdapter.SelectCommand = sqlCommand;            DataSet dataSet = new DataSet();            //sqlCommandBuilder is for update the dataset to database            SqlCommandBuilder sqlCommandBuilder = new SqlCommandBuilder(sqlDataAdapter);            sqlDataAdapter.Fill(dataSet, dataTableName);             //Do something to dataset then you can update it to Database.Here I just add a row            DataRow row = dataSet.Tables[0].NewRow();            row[0] = 10000;            row[1] = "new row";            dataSet.Tables[0].Rows.Add(row);             sqlDataAdapter.Update(dataSet, dataTableName);             sqlCommand.Dispose();            sqlDataAdapter.Dispose();            sqlConnection.Close();        }    }} //以上的程序概括了最典型的用法,也是最基本的用法.更多的用法我将会陆续给出,大家有什么疑问或建议,欢迎来信([e-mail])或留言.关于SQL Server的使用和//心得,我也会在近期在DataBase区给出