C#数据库操作的三种经典用法

本文介绍使用C#连接SQLServer2005并执行基本数据库操作的方法,包括使用SqlReader读取数据、调用存储过程及利用SqlDataSet进行数据填充与更新。

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >

导读:
  
  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。 [bitsCN_com]
  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,源码如下: DL@bitsCN_com网管软件下载
  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();  } }}DL@bitsCN_com网管软件下载
  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(

本文转自
http://www.bitscn.com/dotnet/c/200709/109573.html
评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值