怎样连接数据库
用C#语言在NET中开发Web应用程序怎样连接SQL Server数据库？希望给出详细步骤 急急急急急急急急急急急急急急！！！！！！！！！！！！！！！！ 问题点数：20、回复次数：4Top
1 楼lizi02（冬虫夏草）回复于 2006-03-12 11:09:18 得分 0
虽然是比较简单比较基础的问题但是建议你提问前先搜索下论坛和用下baidu.Top
2 楼youyuan1980（水云间）回复于 2006-03-12 11:42:29 得分 0
用数据工具箱中的数据连接控件。应该是sqldataconnection这个，然后你设置一下就可以了，
还可以测试呢。Top
3 楼njbaige（白鸽）回复于 2006-03-12 11:48:47 得分 20
这个是我平时用的封装好的OLEDB数据库操作类，可以参考下～
另外MSDN上面有很详细的连接操作代码～
using System;
using System.Configuration;
using System.Data;
using System.Data.OleDb;
namespace EQTesting.Data
{
public sealed class CDBConn
{
// Methods
public CDBConn()
{
this.m_bIsInTransaction = false;
this.m_Timeout = 30;
this.m_objConn = new OleDbConnection(ConfigurationSettings.AppSettings["ConnectString"]);
this.m_objConn.Open();
}
public CDBConn(bool bOpenNow)
{
this.m_bIsInTransaction = false;
this.m_Timeout = 30;
this.m_objConn = new OleDbConnection(ConfigurationSettings.AppSettings["ConnectString"]);
if (bOpenNow)
{
this.m_objConn.Open();
}
}
public CDBConn(string strConnectionString)
{
this.m_bIsInTransaction = false;
this.m_Timeout = 30;
this.m_objConn = new OleDbConnection(strConnectionString);
this.m_objConn.Open();
}
public CDBConn(string strConnectionString, bool bOpenNow)
{
this.m_bIsInTransaction = false;
this.m_Timeout = 30;
this.m_objConn = new OleDbConnection(strConnectionString);
if (bOpenNow)
{
this.m_objConn.Open();
}
}
public void BeginTransaction()
{
if (!this.m_bIsInTransaction)
{
this.m_objCommand = new OleDbCommand();
this.m_objCommand.Connection = this.m_objConn;
this.m_objTransaction = this.m_objConn.BeginTransaction();
if (this.m_Timeout >= 30)
{
this.m_objCommand.CommandTimeout = this.m_Timeout;
}
this.m_objCommand.Transaction = this.m_objTransaction;
this.m_bIsInTransaction = true;
}
}
public void Close()
{
if (this.m_objConn.State != ConnectionState.Closed)
{
this.m_objConn.Close();
}
}
public void Commit()
{
if (this.m_bIsInTransaction)
{
this.m_objTransaction.Commit();
this.m_bIsInTransaction = false;
this.m_objCommand.Dispose();
}
}
public void Dispose()
{
if (this.m_objConn.State != ConnectionState.Closed)
{
this.m_objConn.Close();
}
this.m_objConn.Dispose();
}
public DataSet ExecuteDataSet(string strSQL)
{
DataSet set1 = new DataSet();
OleDbCommand command1 = new OleDbCommand(strSQL, this.m_objConn);
if (this.m_Timeout >= 30)
{
command1.CommandTimeout = this.m_Timeout;
}
OleDbDataAdapter adapter1 = new OleDbDataAdapter(command1);
adapter1.Fill(set1);
command1.Dispose();
adapter1.Dispose();
return set1;
}
public DataSet ExecuteDataSet(string strSQL, string strTable)
{
DataSet set1 = new DataSet();
OleDbCommand command1 = new OleDbCommand(strSQL, this.m_objConn);
if (this.m_Timeout >= 30)
{
command1.CommandTimeout = this.m_Timeout;
}
OleDbDataAdapter adapter1 = new OleDbDataAdapter(command1);
adapter1.Fill(set1, strTable);
command1.Dispose();
adapter1.Dispose();
return set1;
}
public OleDbDataReader ExecuteReader(string strSQL)
{
OleDbCommand command1 = new OleDbCommand(strSQL, this.m_objConn);
if (this.m_Timeout >= 30)
{
command1.CommandTimeout = this.m_Timeout;
}
OleDbDataReader reader1 = command1.ExecuteReader();
command1.Dispose();
return reader1;
}
public void ExecuteSQL(string strSQL)
{
if (!this.m_bIsInTransaction)
{
OleDbCommand command1 = new OleDbCommand(strSQL, this.m_objConn);
if (this.m_Timeout >= 30)
{
command1.CommandTimeout = this.m_Timeout;
}
command1.ExecuteNonQuery();
command1.Dispose();
}
else
{
this.m_objCommand.CommandText = strSQL;
this.m_objCommand.ExecuteNonQuery();
}
}
public int FillDataSet(ref DataSet objDataSet, string strSQL)
{
OleDbCommand command1 = new OleDbCommand(strSQL, this.m_objConn);
if (this.m_Timeout >= 30)
{
command1.CommandTimeout = this.m_Timeout;
}
OleDbDataAdapter adapter1 = new OleDbDataAdapter(command1);
int num1 = adapter1.Fill(objDataSet);
command1.Dispose();
adapter1.Dispose();
return num1;
}
public int FillDataSet(ref DataSet objDataSet, string strSQL, string strTable)
{
OleDbCommand command1 = new OleDbCommand(strSQL, this.m_objConn);
if (this.m_Timeout >= 30)
{
command1.CommandTimeout = this.m_Timeout;
}
OleDbDataAdapter adapter1 = new OleDbDataAdapter(command1);
int num1 = adapter1.Fill(objDataSet, strTable);
command1.Dispose();
adapter1.Dispose();
return num1;
}
~CDBConn()
{
}
public bool Lock(string[] strArrTableName)
{
return true;
// return this.m_objSync.Lock(strArrTableName);
}
public void Open()
{
if (this.m_objConn.State != ConnectionState.Open)
{
this.m_objConn.Open();
}
}
public void Rollback()
{
if (this.m_bIsInTransaction)
{
this.m_objTransaction.Rollback();
this.m_bIsInTransaction = false;
this.m_objCommand.Dispose();
}
}
public void Update(string strSelectSQL, DataSet objDataSet)
{
OleDbDataAdapter adapter1;
OleDbCommandBuilder builder1;
if (!this.m_bIsInTransaction)
{
OleDbCommand command1 = new OleDbCommand(strSelectSQL, this.m_objConn);
if (this.m_Timeout >= 30)
{
command1.CommandTimeout = this.m_Timeout;
}
adapter1 = new OleDbDataAdapter(command1);
builder1 = new OleDbCommandBuilder(adapter1);
adapter1.InsertCommand = builder1.GetInsertCommand();
adapter1.DeleteCommand = builder1.GetDeleteCommand();
adapter1.UpdateCommand = builder1.GetUpdateCommand();
adapter1.Update(objDataSet);
builder1.Dispose();
command1.Dispose();
adapter1.Dispose();
}
else
{
adapter1 = new OleDbDataAdapter(this.m_objCommand);
builder1 = new OleDbCommandBuilder(adapter1);
adapter1.InsertCommand = builder1.GetInsertCommand();
adapter1.DeleteCommand = builder1.GetDeleteCommand();
adapter1.UpdateCommand = builder1.GetUpdateCommand();
adapter1.Update(objDataSet);
builder1.Dispose();
adapter1.Dispose();
}
}
// Properties
public ConnectionState State
{
get
{
return this.m_objConn.State;
}
}
public int Timeout
{
get
{
return this.m_Timeout;
}
set
{
if (value < 1)
{
this.m_Timeout = 1;
}
else
{
this.m_Timeout = value;
}
}
}
// Fields
private bool m_bIsInTransaction;
private OleDbCommand m_objCommand;
private OleDbConnection m_objConn;
private OleDbTransaction m_objTransaction;
private int m_Timeout;
}
}
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4 楼hoowoo（专注ASP.NET 2.O）回复于 2006-03-12 13:13:44 得分 0
http://soft.yesky.com/482/2254482.shtml
我的文章，看看有没有什么帮助Top
