C#中连接各种数据库方法 odbc oledb sqlserver

最新推荐文章于 2022-01-07 17:43:52 发布

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#数据库 #c# #网络

本文提供了多种数据库连接配置示例，包括SQL Server、Oracle、MySQL、IBM DB2等，覆盖了ODBC、OLEDB及.NET连接方式，适用于不同场景的需求。

SQL Server
ODBC

Standard Security:
"Driver={SQL Server};Server=Aron1;Database=pubs;Uid=sa;Pwd=asdasd;"

Trusted connection:
"Driver={SQL Server};Server=Aron1;Database=pubs;Trusted_Connection=yes;"

Prompt for username and password:
oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Driver={SQL Server};Server=Aron1;DataBase=pubs;"

OLEDB, OleDbConnection (.NET)

Standard Security:
"Provider=sqloledb;Data Source=Aron1;Initial Catalog=pubs;User Id=sa;Password=asdasd;"

Trusted Connection:
"Provider=sqloledb;Data Source=Aron1;Initial Catalog=pubs;Integrated Security=SSPI;"
(use serverName\instanceName as Data Source to use an specifik SQLServer instance, only SQLServer2000)
Prompt for username and password:
oConn.Provider = "sqloledb"
oConn.Properties("Prompt") = adPromptAlways
oConn.Open "Data Source=Aron1;Initial Catalog=pubs;"

Connect via an IP address:
"Provider=sqloledb;Data Source=190.190.200.100,1433;Network Library=DBMSSOCN;Initial Catalog=pubs;User ID=sa;Password=asdasd;"
(DBMSSOCN=TCP/IP instead of Named Pipes, at the end of the Data Source is the port to use (1433 is the default))
SqlConnection (.NET)

Standard Security:
"Data Source=Aron1;Initial Catalog=pubs;User Id=sa;Password=asdasd;"

Trusted Connection:
"Data Source=Aron1;Initial Catalog=pubs;Integrated Security=SSPI;"
(use serverName\instanceName as Data Source to use an specifik SQLServer instance, only SQLServer2000)
Connect via an IP address:
"Data Source=190.190.200.100,1433;Network Library=DBMSSOCN;Initial Catalog=pubs;User ID=sa;Password=asdasd;"
(DBMSSOCN=TCP/IP instead of Named Pipes, at the end of the Data Source is the port to use (1433 is the default))
Declare the SqlConnection:

C#:
using System.Data.SqlClient;
SqlConnection oSQLConn = new SqlConnection();
oSQLConn.ConnectionString="my connectionstring";
oSQLConn.Open();

VB.NET:
Imports System.Data.SqlClient
Dim oSQLConn As SqlConnection = New SqlConnection()
oSQLConn.ConnectionString="my connectionstring"
oSQLConn.Open()

Access
ODBC

Standard Security:
"Driver={Microsoft Access Driver (*.mdb)};Dbq=\somepath\mydb.mdb;Uid=Admin;Pwd=asdasd;"

Workgroup:
"Driver={Microsoft Access Driver (*.mdb)};Dbq=\somepath\mydb.mdb;SystemDB=\somepath\mydb.mdw;","admin", ""

OLEDB, OleDbConnection (.NET)

Standard security:
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\somepath\mydb.mdb;User Id=admin;Password=asdasd;"

Workgroup (system database):
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\somepath\mydb.mdb;Jet OLEDB:System Database=system.mdw;","admin", ""

With password:
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\somepath\mydb.mdb;Jet OLEDB:Database Password=MyDbPassword;","admin", ""

Oracle
ODBC

New version:
"Driver={Microsoft ODBC for Oracle};Server=OracleServer.world;Uid=Username;Pwd=asdasd;"

Old version:
"Driver={Microsoft ODBC Driver for Oracle};ConnectString=OracleServer.world;Uid=myUsername;Pwd=myPassword;"

OLEDB, OleDbConnection (.NET)

Standard security:
"Provider=msdaora;Data Source=MyOracleDB;User Id=UserName;Password=asdasd;"
This one's from Microsoft, the following are from Oracle
Standard Security:
"Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;User Id=Username;Password=asdasd;"

Trusted Connection:
"Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;OSAuthent=1;"

OracleConnection (.NET)

Standard:
"Data Source=Oracle8i;Integrated Security=yes";
This one works only with Oracle 8i release 3 or later
Declare the OracleConnection:

C#:
using System.Data.OracleClient;
OracleConnection oOracleConn = new OracleConnection();
oOracleConn.ConnectionString = "my connectionstring";
oOracleConn.Open();

VB.NET:
Imports System.Data.OracleClient
Dim oOracleConn As OracleConnection = New OracleConnection()
oOracleConn.ConnectionString = "my connectionstring"
oOracleConn.Open()

Data Shape

MS Data Shape:
"Provider=MSDataShape.1;Persist Security Info=False;Data Provider=MSDAORA;Data Source=orac;user id=username;password=mypw"

MySQL
ODBC

Local database:
"Driver={mySQL};Server=mySrvName;Option=16834;Database=mydatabase;"

Remote database:
"Driver={mySQL};Server=data.domain.com;Port=3306;Option=131072;Stmt=;Database=my-database;Uid=username;Pwd=password;"

OLEDB, OleDbConnection (.NET)

Standard:
"Provider=MySQLProv;Data Source=mydb;User Id=UserName;Password=asdasd;"
MySqlConnection (.NET)

EID:
"Data Source=server;Database=mydb;User ID=username;Password=pwd;Command Logging=false"
This one is used with eInfoDesigns dbProvider, an add-on to .NET
Declare the MySqlConnection:

C#:
using EID.MySqlClient;
MySqlConnection oMySqlConn = new MySqlConnection();
oMySqlConn.ConnectionString = "my connectionstring";
oMySqlConn.Open();

VB.NET:
Imports EID.MySqlClient
Dim oMySqlConn As MySqlConnection = New MySqlConnection()
oMySqlConn.ConnectionString = "my connectionstring"
oMySqlConn.Open()

IBM DB2
OLEDB, OleDbConnection (.NET) from ms

TCP/IP:
"Provider=DB2OLEDB;Network Transport Library=TCPIP;Network Address=XXX.XXX.XXX.XXX;Initial Catalog=MyCtlg;Package Collection=MyPkgCol;Default Schema=Schema;User ID=MyUser;Password=MyPW"

APPC:
"Provider=DB2OLEDB;APPC Local LU Alias=MyAlias;APPC Remote LU Alias=MyRemote;Initial Catalog=MyCtlg;Package Collection=MyPkgCol;Default Schema=Schema;User ID=MyUser;Password=MyPW"

Sybase
ODBC

Standard:
"Driver={SYBASE SYSTEM 11};Srvr=Aron1;Uid=username;Pwd=password;"

Intersolv 3.10:
"Driver={INTERSOLV 3.10 32-BIT Sybase};Srvr=Aron1;Uid=username;Pwd=password;"

Informix
ODBC

Informix 3.30:
"Dsn='';Driver={INFORMIX 3.30 32 BIT};Host=hostname;Server=myserver;Service=service-name;Protocol=olsoctcp;Database=mydb;UID=username;PWD=myPwd

Informix-CLI 2.5:
"Driver={Informix-CLI 2.5 (32 Bit)};Server=myserver;Database=mydb;Uid=username;Pwd=myPwd"

DSN
ODBC

DSN:
"DSN=myDsn;Uid=username;Pwd=;"

File DSN:
"FILEDSN=c:\myData.dsn;Uid=username;Pwd=;"

Excel
ODBC

Standard:
"Driver={Microsoft Excel Driver (*.xls)};DriverId=790;Dbq=C:\MyExcel.xls;DefaultDir=c:\mypath;"

OLE DB

Standard:
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\MyExcel.xls;Extended Properties=Excel 8.0;HDR=Yes;"
"HDR=Yes;" indicates that the first row contains columnnames, not data
DBF / FoxPro
ODBC

standard:
"Driver={Microsoft dBASE Driver (*.dbf)};DriverID=277;Dbq=c:\mydbpath;"

OLEDB, OleDbConnection (.NET)

standard:
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\folder;Extended Properties=dBASE IV;User ID=Admin;Password="

Pervasive
ODBC

Standard:
"Driver={Pervasive ODBC Client Interface};ServerName=srvname;dbq=@dbname"

常用连接:
1.使用SqlConnection对象:
public void SqlConnectionOpen()
{
SqlConnection conn= new SqlConnection();
conn.ConnectionString = "user id=sa;password=;initial catalog=northwind;datasource=localhost;connect Timeout=20";
conn.Open();
}
2.使用OleDbConnection对象:
public void OleDBConnectionOpen()
{
OleDBConnection conn = new OleDbconnection();
conn.ConnectionString="Provider=Microsoft.Jet.OLEDB.4.0;DataSource=C:\Customer.mdb";
conn.Open();
}
(二)其它:
1.ODBC连接Access本地数据库
conGoodDay.Open("Driver={Microsoft Access Driver(*.mdb)};"+"Dbq=C:\a.mdb;"+
"Uid=Admin;"+"Pwd=;");
2.ODBC连接Access系统数据库
conGoodDay.Open("Driver={Microsoft Access Driver(*.mdb)};"+"Dbq=C:\a.mdb;"+
"SystemDB=Admin;"+"Pwd=;");
3.ODBC连接Access系统数据库
conGoodDay.Open("Driver={Microsoft Access Driver(*.mdb)};"+"Dbq=\\server\share\a.mdb;");
4.ODBC连接Excel系统数据库
conGoodDay.Open("Driver={Microsoft Access Driver(*.xls)};"+"DriverId=790;"+
"Dbq=C:\a.xls;"+"DefaultDir=c:\somepath;");
5.ODBC连接Oracle系统数据库
conGoodDay.Open("Driver={Microsoft ODBC for oracle};"+"Server=OracleServer.world;"+
"Uid=Admin;"+"Pwd=password;");
6.ODBC连接Sql Servr
conGoodDay.Open("Driver={Sql Server};"+"Server=myServer;"+"Database=myDatabaseName;"
"Uid=Admin;"+"Pwd=password;");
7.ODBC连接Visual FoxPro
conGoodDay.Open("Driver={Microsoft Visual FoxPro Driver};"+
"SourceType=DBC;"+"SourceDB=c:a.dbc;"+"Exclusive=No;");