微软提供的四种数据库连接方式：

System.Data.OleDb.OleDbConnection

System.Data.SqlClient.SqlConnection

System.Data.Odbc.OdbcConnection

System.Data.OracleClient.OracleConnection

名称

ADO.NET连接字符串

说明

ADO.NET连接字符串：SQL Server，SQL Server 2005，ACCESS，Oracle，MySQL，Interbase，IBM DB2，Sybase，Informix，Ingres，Mimer SQL，Lightbase，PostgreSQL，Paradox，DNS，Firebird，Excel ，Text，DBF / FoxPro，AS/400 (iSeries)，Exchange，Visual FoxPro，Pervasive，UDL。

1 - SQL Server

2 - SQL Server 2005

3 - ACCESS, Oracle

4 - MySQL, Interbase, IBM DB2

5 - Sybase, Informix, Ingres, Mimer SQL, Lightbase, PostgreSQL, Paradox, DNS

6 - Firebird, Excel , Text, DBF / FoxPro, AS/400 (iSeries), Exchange, Visual FoxPro, Pervasive, UDL

1

SQL Server

ODBC

标准安全

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

信任的连接

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

提示输入用户名和密码

oConn.Properties(" Prompt" ) = adPromptAlways

oConn.Open " Driver={SQL Server}; Server=Aron1; DataBase=pubs; "

OLE DB, OleDbConnection (.NET)

标准安全

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

信任的连接

" 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)

提示输入用户名和密码

oConn.Provider = " sqloledb"

oConn.Properties(" Prompt" ) = adPromptAlways

oConn.Open " Data Source=Aron1; Initial Catalog=pubs; "

IP地址连接管道

" 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)

标准安全

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

- or -

" Server=Aron1; Database=pubs; User ID=sa; Password=asdasd; Trusted_Connection=False"

(both connection strings produces the same result)

信任的连接

" Data Source=Aron1; Initial Catalog=pubs; Integrated Security=SSPI; "

- or -

" Server=Aron1; Database=pubs; Trusted_Connection=True; "

(both connection strings produces the same result)

(use serverName\instanceName as Data Source to use an specifik SQLServer instance, only SQLServer2000)

IP地址连接管道

" 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))

定义SqlConnection对象

C#:

using System.Data.SqlClient;

SqlConnection oSQLConn = new SqlConnection();

oSQLConn.ConnectionString=" my connection string" ;

oSQLConn.Open();

VB.NET:

Imports System.Data.SqlClient

Dim oSQLConn As SqlConnection = New SqlConnection()

oSQLConn.ConnectionString=" my connection string"

oSQLConn.Open()

Data Shape

MS Data Shape

" Provider=MSDataShape; Data Provider=SQLOLEDB; Data Source=Aron1; Initial Catalog=pubs; User ID=sa; Password=asdasd; "

2

SQL Server 2005

SQL Native Client ODBC Driver

标准安全

" Driver={SQL Native Client}; Server=Aron1; Database=pubs; UID=sa; PWD=asdasd; "

信任的连接

" Driver={SQL Native Client}; Server=Aron1; Database=pubs; Trusted_Connection=yes; "

Equivalents

Integrated Security=SSPI equals Trusted_Connection=yes

提示输入用户名和密码

oConn.Properties(" Prompt" ) = adPromptAlways

oConn.Open " Driver={SQL Native Client}; Server=Aron1; DataBase=pubs; "

授权的MARS(多重活动结果集)

" Driver={SQL Native Client}; Server=Aron1; Database=pubs; Trusted_Connection=yes; MARS_Connection=yes"

Equivalents

MultipleActiveResultSets=true equals MARS_Connection=yes

加密数据网络传输

" Driver={SQL Native Client}; Server=Aron1; Database=pubs; Trusted_Connection=yes; Encrypt=yes"

在本地SQL服务器实例附加数据库文件

" Driver={SQL Native Client}; Server=.\SQLExpress; AttachDbFilename=c:\asd\qwe\mydbfile.mdf; Database=dbname; Trusted_Connection=Yes; "

- or -

" Driver={SQL Native Client}; Server=.\SQLExpress; AttachDbFilename=|DataDirectory|mydbfile.mdf; Database=dbname; Trusted_Connection=Yes; "

(use |DataDirectory| when your database file resides in the data directory)

SQL Native Client OLE DB Provider

标准安全

" Provider=SQLNCLI; Server=Aron1; Database=pubs; UID=sa; PWD=asdasd; "

信任的连接

" Provider=SQLNCLI; Server=Aron1; Database=pubs; Trusted_Connection=yes; "

Equivalents

Integrated Security=SSPI equals Trusted_Connection=yes

提示输入用户名和密码

oConn.Properties(" Prompt" ) = adPromptAlways

oConn.Open " Provider=SQLNCLI; Server=Aron1; DataBase=pubs; "

授权的MARS(多重活动结果集)

" Provider=SQLNCLI; Server=Aron1; Database=pubs; Trusted_Connection=yes; MarsConn=yes"

Equivalents

MarsConn=yes equals MultipleActiveResultSets=true equals MARS_Connection=yes

加密数据网络传输

" Provider=SQLNCLI; Server=Aron1; Database=pubs; Trusted_Connection=yes; Encrypt=yes"

在本地SQL服务器实例附加数据库文件

" Provider=SQLNCLI; Server=.\SQLExpress; AttachDbFilename=c:\asd\qwe\mydbfile.mdf; Database=dbname; Trusted_Connection=Yes; "

- or -

" Provider=SQLNCLI; Server=.\SQLExpress; AttachDbFilename=|DataDirectory|mydbfile.mdf; Database=dbname; Trusted_Connection=Yes; "

(use |DataDirectory| when your database file resides in the data directory)

SqlConnection (.NET)

标准安全

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

- or -

" Server=Aron1; Database=pubs; User ID=sa; Password=asdasd; Trusted_Connection=False"

(both connection strings produces the same result)

信任的连接

" Data Source=Aron1; Initial Catalog=pubs; Integrated Security=SSPI; "

- or -

" Server=Aron1; Database=pubs; Trusted_Connection=True; "

(both connection strings produces the same result)

IP地址连接管道

" 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))

授权的MARS(多重活动结果集)

" Server=Aron1; Database=pubs; Trusted_Connection=True; MultipleActiveResultSets=true"

Note! Use ADO.NET 2.0 for MARS functionality. MARS is not supported in ADO.NET 1.0 nor ADO.NET 1.1

在本地SQL服务器实例附加数据库文件

" Server=.\SQLExpress; AttachDbFilename=c:\asd\qwe\mydbfile.mdf; Database=dbname; Database=dbname; Trusted_Connection=Yes; "

- or -

" Server=.\SQLExpress; AttachDbFilename=|DataDirectory|mydbfile.mdf; Database=dbname; Trusted_Connection=Yes; "

Using " User Instance" on a local SQL Server Express instance

" Data Source=.\SQLExpress; integrated security=true; attachdbfilename=|DataDirectory|\mydb.mdf; user instance=true; "

The " User Instance" functionality creates a new SQL Server instance on the fly during connect. This works only on a local SQL Server 2005 instance and only when connecting using windows authentication over local named pipes. The purpose is to be able to create a full rights SQL Server instance to a user with limited administrative rights on the computer. To enable the functionality: sp_configure 'user instances enabled','1' (0 to disable)

Using SQL Server 2005 Express? Don't miss the server name syntax: SERVERNAME\SQLEXPRESS (Substitute " SERVERNAME" with the name of the computer)

Context Connection - connecting to " self" from within your CLR stored prodedure/function

Context Connection - connecting to " self" from within your CLR stored prodedure/function

C#

using(SqlConnection connection = new SqlConnection("context connection=true"))

{

connection.Open();

// Use the connection

}

Visual Basic

Using connection as new SqlConnection("context connection=true")

connection.Open()

' Use the connection

End Using

Read more

When to use SQL Native Client?

.Net applications

Do not use the SQL Native Client. Use the .NET Framework Data Provider for SQL Server (SqlConnection).

COM applications, all other then .Net applications

COM applications, all other then .Net applications

Use the SQL Native Client if you are accessing an SQL Server 2005 and need the new features of SQL Server 2005 such as MARS, encryption, XML data type etc. Continue use your current provider (OLE DB / ODBC through the MDAC package) if you are not connecting to an SQL Server 2005 (that's quite obvious eh..) or if you are connecting to an SQL Server 2005 but are not using any of the new SQL Server 2005 features.

3

ACCESS

ODBC

标准安全

"Driver={Microsoft Access Driver (*.mdb)}; Dbq=C:\mydatabase.mdb; Uid=Admin; Pwd=; "

工作组

"Driver={Microsoft Access Driver (*.mdb)}; Dbq=C:\mydatabase.mdb; SystemDB=C:\mydatabase.mdw; "

独占

"Driver={Microsoft Access Driver (*.mdb)}; Dbq=C:\mydatabase.mdb; Exclusive=1; Uid=admin; Pwd="

OLE DB, OleDbConnection (.NET)

标准安全

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

工作组 (system database)

"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=\somepath\mydb.mdb; Jet OLEDB:System Database=system.mdw; "

使用密码

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

Oracle

ODBC

新版本

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

旧版本

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

OLE DB, OleDbConnection (.NET)

标准安全

"Provider=msdaora; Data Source=MyOracleDB; User Id=UserName; Password=asdasd; "

This one's from Microsoft, the following are from Oracle

标准安全

"Provider=OraOLEDB.Oracle; Data Source=MyOracleDB; User Id=Username; Password=asdasd; "

信任的连接

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

OracleConnection (.NET)

标准

"Data Source=MyOracleDB; Integrated Security=yes; "

This one works only with Oracle 8i release 3 or later

10g及以上:

"Data Source=MyOracleDB; User Id=UserName; Password=asdasd;"

指定用户名和密码

"Data Source=MyOracleDB; User Id=username; Password=passwd; Integrated Security=no; "

This one works only with Oracle 8i release 3 or later

定义OracleConnection对象

C#:

using System.Data.OracleClient;

OracleConnection oOracleConn = new OracleConnection();

oOracleConn.ConnectionString = "my connection string";

oOracleConn.Open();

VB.NET:

Imports System.Data.OracleClient

Dim oOracleConn As OracleConnection = New OracleConnection()

oOracleConn.ConnectionString = "my connection string"

oOracleConn.Open()

Core Labs OraDirect (.NET)

标准

"User ID=scott; Password=tiger; Host=ora; Pooling=true; Min Pool Size=0; Max Pool Size=100; Connection Lifetime=0"

Data Shape

微软数据模型

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

4

MySQL

MyODBC

MyODBC 2.50 本地数据库

"Driver={mySQL}; Server=localhost; Option=16834; Database=mydatabase; "

MyODBC 2.50 远程数据库:

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

MyODBC 3.51 本地数据库

"DRIVER={MySQL ODBC 3.51 Driver}; SERVER=localhost; DATABASE=myDatabase; USER=myUsername; PASSWORD=myPassword; OPTION=3; "

MyODBC 3.51 远程数据库

"DRIVER={MySQL ODBC 3.51 Driver}; SERVER=data.domain.com; PORT=3306; DATABASE=myDatabase; USER=myUsername; PASSWORD=myPassword; OPTION=3; "

OLE DB, OleDbConnection (.NET)

标准

"Provider=MySQLProv; Data Source=mydb; User Id=UserName; Password=asdasd; "

Connector/Net 1.0 (.NET)

标准

"Server=Server; Database=Test; Uid=UserName; Pwd=asdasd; "

Download the driver at MySQL Developer Zone

指定端口

"Server=Server; Port=1234; Database=Test; Uid=UserName; Pwd=asdasd; "

Default port is 3306. Enter value -1 to use a named pipe connection.

定义mysqlclient 连接对象

C#:

using MySql.Data.MySqlClient;

MySqlConnection oMySqlConn = new MySqlConnection();

oMySqlConn.ConnectionString = "Server=Server; Database=Test; Uid=UserName; Pwd=asdasd; ";

oMySqlConn.Open();

VB.NET:

Imports MySql.Data.MySqlClient

Dim oMySqlConn As MySqlConnection = New MySqlConnection()

oMySqlConn.ConnectionString = "Server=Server; Database=Test; Uid=UserName; Pwd=asdasd; "

oMySqlConn.Open()

MySqlConnection (.NET)

eInfoDesigns.dbProvider

"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

定义MySqlConnection连接对象

C#:

using eInfoDesigns.dbProvider.MySqlClient;

MySqlConnection oMySqlConn = new MySqlConnection();

oMySqlConn.ConnectionString = "my connection string";

oMySqlConn.Open();

VB.NET:

Imports eInfoDesigns.dbProvider.MySqlClient

Dim oMySqlConn As MySqlConnection = New MySqlConnection()

oMySqlConn.ConnectionString = "my connection string"

oMySqlConn.Open()

SevenObjects MySqlClient (.NET)

标准

"Host=server; UserName=myusername; Password=mypassword; Database=mydb; "

This is a freeware ADO.Net data provider from SevenObjects

Core Labs MySQLDirect (.NET)

标准

"User ID=root; Password=pwd; Host=localhost; Port=3306; Database=test; Direct=true; Protocol=TCP; Compress=false; Pooling=true; Min Pool Size=0; Max Pool Size=100; Connection Lifetime=0"

Interbase

ODBC, Easysoft

本地计算机

"Driver={Easysoft IB6 ODBC}; Server=localhost; Database=localhost:C:\mydatabase.gdb; Uid=username; Pwd=password"

远程计算机

"Driver={Easysoft IB6 ODBC}; Server=ComputerName; Database=ComputerName:C:\mydatabase.gdb; Uid=username; Pwd=password"

ODBC, Intersolv

本地计算机

"Driver={INTERSOLV InterBase ODBC Driver (*.gdb)}; Server=localhost; Database=localhost:C:\mydatabase.gdb; Uid=username; Pwd=password"

远程计算机

"Driver={INTERSOLV InterBase ODBC Driver (*.gdb)}; Server=ComputerName; Database=ComputerName:C:\mydatabase.gdb; Uid=username; Pwd=password"

OLE DB, SIBPROvider

标准

"provider=sibprovider; location=localhost:; data source=c:\databases\gdbs\mygdb.gdb; user id=SYSDBA; password=masterkey"

指定字符集

"provider=sibprovider; location=localhost:; data source=c:\databases\gdbs\mygdb.gdb; user id=SYSDBA; password=masterkey; character set=ISO8859_1"

指定规则

"provider=sibprovider; location=localhost:; data source=c:\databases\gdbs\mygdb.gdb; user id=SYSDBA; password=masterkey; role=DIGITADORES"

IBM DB2

OLE DB, 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"

IBM's OLE DB Provider (shipped with IBM DB2 UDB v7 or above)

TCP/IP

"Provider=IBMDADB2; Database=sample; HOSTNAME=db2host; PROTOCOL=TCPIP; PORT=50000; uid=myUserName; pwd=myPwd;"

ODBC

标准

"driver={IBM DB2 ODBC DRIVER}; Database=myDbName; hostname=myServerName; port=myPortNum; protocol=TCPIP; uid=myUserName; pwd=myPwd"

5

Sybase

ODBC

标准 Sybase System 12 (or 12.5) Enterprise Open Client

"Driver={SYBASE ASE ODBC Driver}; Srvr=Aron1; Uid=username; Pwd=password"

标准 Sybase System 11

"Driver={SYBASE SYSTEM 11}; Srvr=Aron1; Uid=username; Pwd=password; Database=mydb"

Intersolv 3.10

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

Sybase SQL Anywhere (former Watcom SQL ODBC driver)

"ODBC; Driver=Sybase SQL Anywhere 5.0; DefaultDir=c:\dbfolder\; Dbf=c:\mydatabase.db; Uid=username; Pwd=password; Dsn="""""

OLE DB

Adaptive Server Anywhere (ASA)

"Provider=ASAProv; Data source=myASA"

Adaptive Server Enterprise (ASE) with Data Source .IDS file

"Provider=Sybase ASE OLE DB Provider; Data source=myASE"

Adaptive Server Enterprise (ASE)

"Provider=Sybase.ASEOLEDBProvider; Srvr=myASEserver,5000; Catalog=myDBname; User Id=username; Password=password"

- some reports on problem using the above one, try the following as an alternative -

"Provider=Sybase.ASEOLEDBProvider; Server Name=myASEserver,5000; Initial Catalog=myDBname; User Id=username; Password=password"

This one works only from Open Client 12.5 where the server port number feature works,following fully qualified connection strings to be used without definingfony .IDS Data Source files.

AseConnection (.NET)

标准

"Data Source='myASEserver'; Port=5000; Database='myDBname'; UID='username'; PWD='password'; "

定义AseConnection连接对象

C#:

using Sybase.Data.AseClient;

AseConnection oCon = new AseConnection();

oCon.ConnectionString="my connection string";

oCon.Open();

VB.NET:

Imports System.Data.AseClient

Dim oCon As AseConnection = New AseConnection()

oCon.ConnectionString="my connection string"

oCon.Open()

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"

OLE DB

IBM Informix OLE DB Provider

"Provider=Ifxoledbc.2; password=myPw; User ID=myUser; Data Source=dbName@serverName; Persist Security Info=true"

Ingres

ODBC

DSN-less

"Provider=MSDASQL.1; DRIVER=Ingres; SRVR=xxxxx; DB=xxxxx; Persist Security Info=False; uid=xxxx; pwd=xxxxx; SELECTLOOPS=N; Extended Properties="""SERVER=xxxxx; DATABASE=xxxxx; SERVERTYPE=INGRES""

Mimer SQL

ODBC

标准安全

"Driver={MIMER}; Database=mydb; Uid=myuser; Pwd=mypw; "

提示输入用户名和密码

"Driver={MIMER}; Database=mydb;"

Lightbase

标准

标准

"user=USERLOGIN; password=PASSWORD; UDB=USERBASE; server=SERVERNAME"

PostgreSQL

Core Labs PostgreSQLDirect (.NET)

标准

"User ID=root; Password=pwd; Host=localhost; Port=5432; Database=testdb; Pooling=true; Min Pool Size=0; Max Pool Size=100; Connection Lifetime=0"

PostgreSQL driver

标准

"DRIVER={PostgreSQL}; SERVER=ipaddress; port=5432; DATABASE=dbname; UID=username; PWD=password; "

Npgsql by pgFoundry (.NET)

SSL activated

"Server=127.0.0.1; Port=5432; Userid=myuserid; password=mypw; Protocol=3; SSL=true; Pooling=true; MinPoolSize=3; MaxPoolSize=20; Encoding=UNICODE; Timeout=20; SslMode=Require"

Without SSL

"Server=127.0.0.1; Port=5432; Userid=myuserid; password=mypw; Protocol=3; SSL=false; Pooling=true; MinPoolSize=1; MaxPoolSize=20; Encoding=UNICODE; Timeout=15; SslMode=Disable"

Paradox

ODBC

5.X

"Driver={Microsoft Paradox Driver (*.db )}; DriverID=538; Fil=Paradox 5.X; DefaultDir=c:\pathToDb\; Dbq=c:\pathToDb\; CollatingSequence=ASCII"

7.X

"Provider=MSDASQL.1; Persist Security Info=False; Mode=Read; Extended Properties='DSN=Paradox; DBQ=C:\myDb; DefaultDir=C:\myDb; DriverId=538; FIL=Paradox 7.X; MaxBufferSize=2048; PageTimeout=600; '; Initial Catalog=C:\myDb"

OleDbConnection (.NET)

标准

"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=c:\myDb; Extended Properties=Paradox 5.x;"

DNS

ODBC

DSN

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

File DSN

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

6

Firebird

ODBC - IBPhoenix Open Source

标准

"DRIVER=Firebird/InterBase(r) driver; UID=SYSDBA; PWD=masterkey; DBNAME=D:\FIREBIRD\examples\TEST.FDB"

.NET - Firebird .Net Data Provider

标准

"User=SYSDBA; Password=masterkey; Database=SampleDatabase.fdb; DataSource=localhost; Port=3050; Dialect=3; Charset=NONE; Role=; Connection lifetime=15; Pooling=true; MinPoolSize=0; MaxPoolSize=50; Packet Size=8192; ServerType=0"

Excel

ODBC

标准

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

OLE DB

标准

"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=C:\MyExcel.xls; Extended Properties=""Excel 8.0; HDR=Yes; IMEX=1"""

"HDR=Yes; " indicates that the first row contains columnnames, not data

"IMEX=1; " tells the driver to always read "intermixed" data columns as text

TIP! SQL syntax: "SELECT * FROM [sheet1$]" - i.e. worksheet name followed by a "$" and wrapped in "[" "]" brackets.

Text

ODBC

标准

"Driver={Microsoft Text Driver (*.txt; *.csv)}; Dbq=c:\txtFilesFolder\; Extensions=asc,csv,tab,txt; "

OLE DB

标准

"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=c:\txtFilesFolder\; Extended Properties=""text; HDR=Yes; FMT=Delimited"""

"HDR=Yes; " indicates that the first row contains columnnames, not data

DBF / FoxPro

ODBC

标准

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

OLE DB, OleDbConnection (.NET)

标准

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

AS/400 (iSeries)

OLE DB, OleDbConnection (.NET)

IBM Client Access OLE DB provider

"PROVIDER=IBMDA400; DATA SOURCE=MY_SYSTEM_NAME; USER ID=myUserName; PASSWORD=myPwd"

IBM Client Access OLE DB provider

"PROVIDER=IBMDA400; DATA SOURCE=MY_SYSTEM_NAME; USER ID=myUserName; PASSWORD=myPwd; DEFAULT COLLECTION=MY_LIBRARY; "

ODBC

IBM Client Access ODBC driver

"Driver={Client Access ODBC Driver (32-bit)}; System=my_system_name; Uid=myUserName; Pwd=myPwd"

Exchange

OLE DB

Exchange OLE DB provider

"ExOLEDB.DataSource"

Specify store in the connection open command like this: conn.open "http://servername/mypublicstore"

Visual FoxPro

OLE DB, OleDbConnection (.NET)

Database container (.DBC)

"Provider=vfpoledb.1; Data Source=C:\MyDbFolder\MyDbContainer.dbc; Collating Sequence=machine"

Free table directory

"Provider=vfpoledb.1; Data Source=C:\MyDataDirectory\; Collating Sequence=general"

Force the provider to use an ODBC DSN

"Provider=vfpoledb.1; DSN=MyDSN"

ODBC

Database container (.DBC)

"Driver={Microsoft Visual FoxPro Driver}; SourceType=DBC; SourceDB=c:\myvfpdb.dbc; Exclusive=No; NULL=NO; Collate=Machine; BACKGROUNDFETCH=NO; DELETED=NO"

Free Table directory

"Driver={Microsoft Visual FoxPro Driver}; SourceType=DBF; SourceDB=c:\myvfpdbfolder; Exclusive=No; Collate=Machine; NULL=NO; DELETED=NO; BACKGROUNDFETCH=NO"

Pervasive

ODBC

标准:

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

OLD DB

标准:

"Provider=PervasiveOLEDB; Data Source=C:\path"

UDL

UDL

UDL

"File Name=c:\myDataLink.udl;"

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