1、.NET 中各种数据库连接大全2008-1-20 动网先锋 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“) = adPromptAlwaysoCon
2、n.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 s
3、erverNameinstanceName as Data Source to use an specifik SQLServer instance, only SQLServer2000)Prompt for username and password:oConn.Provider = “sqloledb“oConn.Properties(“Prompt“) = adPromptAlwaysoConn.Open “Data Source=Aron1;Initial Catalog=pubs;“ Connect via an IP address:“Provider=sqloledb;Data
4、 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 I
5、d=sa;Password=asdasd;“ Trusted Connection:“Data Source=Aron1;Initial Catalog=pubs;Integrated Security=SSPI;“ (use serverNameinstanceName 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;Initi
6、al 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 connectionst
7、ring“;oSQLConn.Open(); VB.NET:Imports System.Data.SqlClientDim 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
8、=asdasd;“ Read more How to define wich network protocol to useExample:“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 db
9、msvinn Win32 Banyan Vines dbmsrpcn Win32 Multi-Protocol (Windows RPC) Important note! When connecting through the SQLOLEDB provider use the syntax Network Library=dbmssocnand when connecting through MSDASQL provider use the syntax Network=dbmssocn All SqlConnection connectionstring propertiesThis ta
10、ble shows all connectionstring properties for the ADO.NET SqlConnection object. Most of the properties are also used in ADO. All properties and descriptions is from msdn. Name Default Description Application Name The name of the application, or .Net SqlClient Data Provider if no application name is
11、provided. AttachDBFilename-or-extended properties-or-Initial File Name The name of the primary file, including the full path name, of an attachable database. The database name must be specified with the keyword database. Connect Timeout-or-Connection Timeout 15 The length of time (in seconds) to wai
12、t for a connection to the server before terminating the attempt and generating an error. Connection Lifetime 0 When a connection is returned to the pool, its creation time is compared with the current time, and the connection is destroyed if that time span (in seconds) exceeds the value specified by
13、 connection lifetime. Useful in clustered configurations to force load balancing between a running server and a server just brought on-line. Connection Reset true Determines whether the database connection is reset when being removed from the pool. Setting to false avoids making an additional server
14、 round-trip when obtaining a connection, but the programmer must be aware that the connection state is not being reset. Current Language The SQL Server Language record name. Data Source-or-Server-or-Address-or-Addr-or-Network Address The name or network address of the instance of SQL Server to which
15、 to connect. Enlist true When true, the pooler automatically enlists the connection in the creation threads current transaction context. Initial Catalog-or-Database The name of the database. Integrated Security-or-Trusted_Connection false Whether the connection is to be a secure connection or not. R
16、ecognized values are true, false, and sspi, which is equivalent to true. Max Pool Size 100 The maximum number of connections allowed in the pool. Min Pool Size 0 The minimum number of connections allowed in the pool. Network Library-or-Net dbmssocn The network library used to establish a connection
17、to an instance of SQL Server. Supported values include dbnmpntw (Named Pipes), dbmsrpcn (Multiprotocol), dbmsadsn (Apple Talk), dbmsgnet (VIA), dbmsipcn (Shared Memory) and dbmsspxn (IPX/SPX), and dbmssocn (TCP/IP). The corresponding network DLL must be installed on the system to which you connect.
18、If you do not specify a network and you use a local server (for example, “.“ or “(local)“), shared memory is used. Packet Size 8192 Size in bytes of the network packets used to communicate with an instance of SQL Server. Password-or-Pwd The password for the SQL Server account logging on. Persist Sec
19、urity Info false When set to false, security-sensitive information, such as the password, is not returned as part of the connection if the connection is open or has ever been in an open state. Resetting the connection string resets all connection string values including the password. Pooling true Wh
20、en true, the SQLConnection object is drawn from the appropriate pool, or if necessary, is created and added to the appropriate pool. User ID The SQL Server login account. Workstation ID the local computer name The name of the workstation connecting to SQL Server. Note Use ; to separate each property
21、.If a name occurs more than once, the value from the last one in the connectionstring will be used.If you are building your connectionstring in your app using values from user input fields, make sure the user cant change the connectionstring by inserting an additional property with another value wit
22、hin the user value. Access ODBC Standard Security:“Driver=Microsoft Access Driver (*.mdb);Dbq=somepathmydb.mdb;Uid=Admin;Pwd=asdasd;“ Workgroup:“Driver=Microsoft Access Driver (*.mdb);Dbq=somepathmydb.mdb;SystemDB=somepathmydb.mdw;“,“admin“, “ OLEDB, OleDbConnection (.NET) Standard security:“Provide
23、r=Microsoft.Jet.OLEDB.4.0;Data Source=somepathmydb.mdb;User Id=admin;Password=asdasd;“ Workgroup (system database):“Provider=Microsoft.Jet.OLEDB.4.0;Data Source=somepathmydb.mdb;Jet OLEDB:System Database=system.mdw;“,“admin“, “ With password:“Provider=Microsoft.Jet.OLEDB.4.0;Data Source=somepathmydb
24、.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, OleDbC
25、onnection (.NET) Standard security:“Provider=msdaora;Data Source=MyOracleDB;User Id=UserName;Password=asdasd;“ This ones from Microsoft, the following are from OracleStandard Security:“Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;User Id=Username;Password=asdasd;“ Trusted Connection:“Provider=Ora
26、OLEDB.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 laterDeclare the OracleConnection:C#:using System.Data.OracleClient;OracleConnection oOracleConn = new OracleConnection()
27、;oOracleConn.ConnectionString = “my connectionstring“;oOracleConn.Open(); VB.NET:Imports System.Data.OracleClientDim oOracleConn As OracleConnection = New OracleConnection()oOracleConn.ConnectionString = “my connectionstring“oOracleConn.Open() Data Shape MS Data Shape:“Provider=MSDataShape.1;Persist
28、 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=;Port=3306;Option=131072;Stmt=;Database=my-database;Uid=username;Pwd=password;“
29、 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 .NETDeclare th
30、e MySqlConnection:C#:using EID.MySqlClient;MySqlConnection oMySqlConn = new MySqlConnection();oMySqlConn.ConnectionString = “my connectionstring“;oMySqlConn.Open(); VB.NET:Imports EID.MySqlClientDim oMySqlConn As MySqlConnection = New MySqlConnection()oMySqlConn.ConnectionString = “my connectionstri
31、ng“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 Al
32、ias=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=use
33、rname;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 OD
34、BC 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=Exc
35、el 8.0;HDR=Yes;“ “HDR=Yes;“ indicates that the first row contains columnnames, not dataDBF / 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“ UDL UDL UDL:“File Name=c:myDataLink.udl;“ 更多免费资源下载：http:/ 勾月，
