数据库连接代码大全

数据库连接代码大全

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;"

OLE DB, 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;"

- or -

"Server=Aron1;Database=pubs;User

ID=sa;Password=asdasd;Trusted_Connection=False"

(booth connection strings produces the same result)

Trusted Connection:

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

- or -

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

(booth connection strings produces the same result)

(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();

:

Imports System.Data.SqlClient

Dim oSQLConn As SqlConnection = New SqlConnection()

oSQLConn.ConnectionString="my connectionstring"

oSQLConn.Open()

Data Shape

MS Data Shape

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

Want to learn data shaping? Check out 4GuyfFromRolla's great article about Data Shaping >>

Read more

How to define which network protocol to use

Example:

"Provider=sqloledb;Data Source=190.190.200.100,1433;Network Library=DBMSSOCN;Initial Catalog=pubs;User ID=sa;Password=asdasd;" Name Network library

dbnmpntw Win32 Named Pipes

dbmssocn Win32 Winsock TCP/IP

dbmsspxn Win32 SPX/IPX

dbmsvinn Win32 Banyan Vines

dbmsrpcn Win32 Multi-Protocol (Windows RPC)

Important note!

When connecting through the SQLOLEDB provider use the syntax Network Library=dbmssocn

and when connecting through MSDASQL provider use the syntax