数据库连接字符串

from:http://www.dofactory.com/Connect/Connect.aspx#_self15

Microsoft SqlServer 数据库连接字符串

Microsoft SQL Server
// ODBC DSN

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn=DsnName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();


// ODBC -- Standard Connection

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString = 
              "Driver={SQL Server};" + 
              "Server=ServerName;" + 
              "DataBase=DataBaseName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();


// ODBC -- Trusted Connection

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString = 
              "Driver={SQL Server};" + 
              "Server=ServerName;" + 
              "DataBase=DataBaseName;" + 
              "Uid=;" + 
              "Pwd=;"; 
conn.Open();

// or

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString = 
              "Driver={SQL Server};" + 
              "Server=ServerName;" + 
              "DataBase=DataBaseName;" + 
              "Trusted_Connection=Yes;"; 
conn.Open();


// OleDb -- Standard Connection

using System.Data.OleDb;

OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=SQLOLEDB;" + 
              "Data Source=ServerName;" + 
              "Initial Catalog=DataBaseName;" + 
              "User id=UserName;" + 
              "Password=Secret;"; 
conn.Open();


// OleDb -- Trusted Connection

using System.Data.OleDb;

OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=SQLOLEDB;" + 
              "Data Source=ServerName;" + 
              "Initial Catalog=DataBaseName;" + 
              "Integrated Security=SSPI;"; 
conn.Open();


// OleDb -- via IP Address

using System.Data.OleDb;

OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = 
              "Driver=SQLOLEDB;" + 
              "Network Library=DBMSSOCN;" + 
              "Data Source=xxx.xxx.xxx.xxx,1433;" + 
              "Initial Catalog=DataBaseName;" + 
              "User id=UserName;" + 
              "Password=Secret;"; 
conn.Open();

// .NET DataProvider -- Standard Connection

using System.Data.SqlClient;

SqlConnection conn = new SqlDbConnection();
conn.ConnectionString = 
              "Data Source=ServerName;" + 
              "Initial Catalog=DataBaseName;" + 
              "User id=UserName;" + 
              "Password=Secret;"; 
conn.Open();


// .NET DataProvider -- Trusted Connection

using System.Data.SqlClient;

SqlConnection conn = new SqlConnection();
conn.ConnectionString = 
              "Data Source=ServerName;" + 
              "Initial Catalog=DataBaseName;" + 
              "Integrated Security=SSPI;"; 
conn.Open();


// .NET DataProvider -- via IP Address

using System.Data.SqlClient;

SqlConnection conn = new SqlConnection();
conn.ConnectionString = 
              "Network Library=DBMSSOCN;" + 
              "Data Source=xxx.xxx.xxx.xxx,1433;" + 
              "Initial Catalog=DataBaseName;" + 
              "User Id=UserName;" + 
              "Password=Secret;"; 
conn.Open();

Microsoft Access 数据库连接字符串

Microsoft Access
// ODBC DSN

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString = "Dsn=DsnName";
conn.Open();

// ODBC -- Standard Security

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString = 
    "Driver={Microsoft Access Driver (*.mdb)};" + 
    "Dbq=c:\myPath\myDb.mdb;" + 
    "Uid=Admin;Pwd=;"; 
conn.Open();


// ODBC -- Workgroup (System Database)

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString = 
    "Driver={Microsoft Access Driver (*.mdb)};" + 
    "Dbq=c:\myPath\myDb.mdb;" + 
    "SystemDb=c:\myPath\myDb.mdw;"; 
conn.Open();

// ODBC -- Exclusive Use

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString = 
     "Driver={Microsoft Access Driver (*.mdb)};" + 
     "Dbq=c:\myPath\myDb.mdb;" + 
     "Exclusive=1;"; 
     "Uid=Admin;Pwd=;"; 
conn.Open();


// OleDb with MS Jet -- Standard Security

using System.Data.OleDb;

OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = 
           "Provider=Microsoft.Jet.OLEDB.4.0;" + 
           "Data Source=c:\mypath\myDb.mdb;" + 
           "User id=admin;" + 
           "Password=";
conn.Open();


// OleDb with MS Jet -- Workgroup (System Database)

using System.Data.OleDb;

OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = 
           "Provider=Microsoft.Jet.OLEDB.4.0;" + 
           "Data Source=c:\mypath\myDb.mdb;" + 
           "System Database=c:\mypath\myDb.mdw;"; 
conn.Open();

// OleDb with MS Jet -- With Password

using System.Data.OleDb;

OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = 
           "Provider=Microsoft.Jet.OLEDB.4.0;" + 
           "Data Source=c:\mypath\myDb.mdb;" + 
           "Database Password=Secret;"
conn.Open();

Microsoft Excel 连接字符串

Excel
// ODBC DSN

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn=DsnName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();


// ODBC without DSN

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString = 
       "Driver={Microsoft Excel Driver (*.xls)};" + 
       "Driverid=790;" + 
       "Dbq=C:\MyPath\SpreadSheet.xls;" + 
       "DefaultDir=C:\MyPath;"; 
conn.Open();


// OleDb with MS Jet

using System.Data.OleDb;

OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = 
    "Driver=Microsoft.Jet.OLEDB.4.0;" + 
    "Data Source=C:\MyPath\SpreadSheet.xls;" + 
   @"Extended Properties=""Excel 8.0;HDR=Yes"""; 
conn.Open();

Text 连接字符串

Text
// ODBC DSN

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString = 
              "Dsn=DsnName;" + 
              "Uid=UserName;" + 
              "Pwd=Secret;"; 
conn.Open();


// ODBC without DSN

using System.Data.Odbc;

OdbcConnection conn = new OdbcConnection();
conn.ConnectionString = 
 "Driver={Microsoft Text Driver (*.txt; *.csv)};" + 
 "Dbq=C:\MyPath\;" + 
 "Extensions=asc,csv,tab,txt;"; 
conn.Open();

// Use: sql = "Select * From MyTextFile.txt"

// OleDb with MS Jet

using System.Data.OleDb;

OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = 
      "Driver=Microsoft.Jet.OLEDB.4.0;" + 
      "Data Source=C:\MyPath\;" + 
      "Extended Properties=" + 
        @"""text;HDR=Yes;FMT=Delimited"""; 
conn.Open();

// Use: sql = "Select * From MyTextFile.txt"