c#连接数据库代码集合.doc

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) = adPromptAlwaysoConn.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 serverNameinstanceName as Data Source to use an specifik SQLServer instance, only SQLServer2000)prompt for username and password:oConn.Provider = sqloledboConn.Properties(Prompt) = adPromptAlwaysoConn.Open Data Source=Aron1;Initial Catalog=pubs; connect via an IP address:Provider=sqloledb;Data Source=00,1433;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 serverNameinstanceName as Data Source to use an specifik SQLServer instance, only SQLServer2000)connect via an IP address:Data Source=00,1433;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.SqlClientDim oSQLConn As SqlConnection = New SqlConnection()oSQLConn.ConnectionString=my connectionstringoSQLConn.Open() Data Shape ms Data ShapeProvider=MSDataShape;Data Provider=SQLOLEDB;Data Source=Aron1;Initial Catalog=pubs;User ID=sa;Password=asdasd; want to learn data shaping? Check out 4GuyfFromRollas great article about Data Shaping Read more How to define which network protocol to useExample:Provider=sqloledb;Data Source=00,1433;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=dbmssocnand when connecting through MSDASQL provider use the syntax Network=dbmssocn All SqlConnection connectionstring propertiesThis table 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 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 wait 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 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 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 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. Recognized 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 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. 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 Security 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 When 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.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 within the user value. Access ODBC standard Security:Driver=Microsoft Access Driver (*.mdb);Dbq=C:mydatabase.mdb;Uid=Admin;Pwd=; workgroup:Driver=Microsoft Access Driver (*.mdb);Dbq=C:mydatabase.mdb;SystemDB=C:mydatabase.mdw; exclusive:Driver=Microsoft Access Driver (*.mdb);Dbq=C:mydatabase.mdb;Exclusive=1;Uid=admin;Pwd= OLE DB, OleDbConnection (.NET) standard security:Provider=Microsoft.Jet.OLEDB.4.0;Data Source=somepathmydb.mdb;User Id=admin;Password=; workgroup (system database):Provider=Microsoft.Jet.OLEDB.4.0;Data Source=somepathmydb.mdb;Jet OLEDB:System Database=system.mdw; with password:Provider=Microsoft.Jet.OLEDB.4.0;Data Source=somepathmydb.mdb;Jet OLEDB:Database Password=MyDbPassword; 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; OLE DB, OleDbConnection (.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=OraOLEDB.Oracle;Data Source=MyOracleDB;OSAuthent=1; OracleConnection (.NET) standard:Data Source=MyOracleDB;Integrated Security=yes; this one works only with Oracle 8i release 3 or laterspecifying username and password:Data Source=MyOracleDB;User Id=username;Password=passwd;Integrated Security=no; this one works only with Oracle 8i release 3 or laterdeclare the OracleConnection:C#:using System.Data.OracleClient;OracleConnection oOracleConn = new OracleConnection();oOracleConn.ConnectionString = my connectionstring;oOracleConn.Open(); VB.NET:Imports System.Data.OracleClientDim oOracleConn As OracleConnection = New OracleConnection()oOracleConn.ConnectionString = my connectionstringoOracleConn.Open() missing the System.Data.OracleClient namespace? Download .NET Managed Provider for Oracle great article! Features of Oracle Data Provider for .NET by Rama Mohan G. at C# CornerCore Labs OraDirect (.NET) standard:User ID=scott; Password=tiger; Host=ora; Pooling=true; Min Pool Size=0;Max Pool Size=100; Connection Lifetime=0 Read more at Core Lab and the product page.Data Shape ms Data Shape:Provider=MSDataShape.1;Persist Security Info=False;Data Provider=MSDAORA;Data Source=orac;user id=username;password=mypw want to learn data shaping? Check out 4GuyfFromRollas great article about Data Shaping MySQL ODBC odbc 2.50 Local database:Driver=mySQL;Server=localhost;Option=16834;Database=mydatabase; odbc 2.50 Remote database:Driver=mySQL;Server=;Port=3306;Option=131072;Stmt=;Database=my-database;Uid=username;Pwd=password; odbc 3.51 Local database:DRIVER=MySQL ODBC 3.51 Driver;SERVER=localhost;DATABASE=myDatabase;USER=myUsername;PASSWORD=myPassword;OPTION=3; odbc 3.51 Remote database:DRIVER=MySQL ODBC 3.51 Driver;SERVER=;PORT=3306;DATABASE=myDatabase;USER=myUsername;PASSWORD=myPassword;OPTION=3; OLE DB, OleDbConnection (.NET) standard:Provider=MySQLProv;Data Source=mydb;User Id=UserName;Password=asdasd; 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 .NETdeclare the MySqlConnection:C#:using eInfoDesigns.dbProvider.MySqlClient;MySqlConnection oMySqlConn = new MySqlConnection();oMySqlConn.ConnectionString = my connectionstring;oMySqlConn.Open(); VB.NET:Imports eInfoDesigns.dbProvider.MySqlClientDim oMySqlConn As MySqlConnection = New MySqlConnection()oMySqlConn.ConnectionString = my connectionstringoMySqlConn.Open() SevenObjects MySqlClient (.NET) standard:Host=server; UserName=myusername; Password=mypassword;Database=mydb; this is a freeware ADO.Net data provider from SevenObjectsCore Labs MySQLDirect (.NET) standard: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 Read more at Core Lab and the product page.Interbase ODBC, Easysoft local computer:Driver=Easysoft IB6 ODBC;Server=localhost;Database=localhost:C:mydatabase.gdb;Uid=username;Pwd=password remote Computer:Driver=Easysoft IB6 ODBC;Server=ComputerName;Database=ComputerName:C:mydatabase.gdb;Uid=username;Pwd=password read more about this driver: Easysoft ODBC-Interbase driver ODBC, Intersolv local computer:Driver=INTERSOLV InterBase ODBC Driver (*.gdb);Server=localhost;Database=localhost:C:mydatabase.gdb;Uid=username;Pwd=password remote Computer:Driver=INTERSOLV InterBase ODBC Driver (*.gdb);Server=ComputerName;Database=ComputerName:C:mydatabase.gdb;Uid=username;Pwd=password this driver are provided by DataDirect Technologies (formerly Intersolv) OLE DB, SIBPROvider standard:provider=sibprovider;location=localhost:;data source=c:databasesgdbsmygdb.gdb;user id=SYSDBA;password=masterkey specifying character set:provider=sibprovider;location=localhost:;data source=c:databasesgdbsmygdb.gdb;user id=SYSDBA;password=masterkey;character set=ISO8859_1 specifying role:provider=sibprovider;location=localhost:;data source=c:databasesgdbsmygdb.gdb;user id=SYSDBA;password=masterkey;role=DIGITADORES Read more about SIBPROvider read more about connecting to Interbase in this Borland Developer Network article /article/0,1410,27152,00.html 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 IBMs 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 standard:driver=IBM DB2 ODBC DRIVER;Database=myDbName;hostname=myServerName;port=myPortNum;protocol=TCPIP; uid=myUserName; pwd=myPwd Sybase ODBC standard Sybase System 12 (or 12.5) Enterprise Open Client:Driver=SYBASE ASE ODBC Driver;Srvr=Aron1;Uid=username;Pwd=password standard Sybase System 11:Driver=SYBASE SYSTEM 11;Srvr=Aron1;Uid=username;Pwd=password; do you know a userguide for Sybase System 11, 12, 12.5? E-mail the URL to now! 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= note! The two double quota following the DSN parameter at the end are escaped quotas (VB syntax), you may have to change this to your language specific escape syntax. The empty DSN parameter is indeed critical as not including it will result in error 7778. Read more in the Sybase SQL Anywhere User Guide OLE DB adaptive Server Anywhere (ASA):Provider=ASAProv;Data source=myASA Read more in the ASA User Guide adaptive Server Enterprise (ASE) with Data Source .IDS file:Provider=Sybase ASE OLE DB Provider; Data source=myASE note that you must create a Data Source .IDS file using the Sybase Data Administrator. These .IDS files resemble ODBC DSNs. 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,燼llowing fully qualified connection strings to be used without defining燼ny .IDS Data Source files. AseConnection (.NET) standard:Data Source=myASEserver;Port=5000;Database=myDBname;UID=username;PWD=password; declare the AseConnection:C#:using Sybase.Data.AseClient;AseConnection oCon = new AseConnection();oCon.ConnectionString=my connection string;oCon.Open(); VB.NET:Imports System.Data.AseClientDim oCon As AseConnection = New AseConnection()oCon.ConnectionString=my connection stringoCon.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=dbNameserverName;Persist Security Info=true Ingres ODBC dsn-lessProvider=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 standard Security:Driver=MIMER;Database=mydb;Uid=myuser;Pwd=mypw; prompt for username and password:Driver=MIMER;Database=mydb; Lightbase Standard standard:user=USERLOGIN;password=PASSWORD;UDB=USERBASE;server=SERVERNAME PostgreSQL Core Labs PostgreSQLDirect (.NET) standard:User ID=root; Password=pwd; Host=localhost; Port=5432; Database=testdb;Pooling=true; Min Pool Size=0; Max Pool Size=100; Connection Lifetime=0 Read more at Core Lab and the product page.DSN ODBC dsn:DSN=myDsn;Uid=username;Pwd=; file DSN:FILEDSN=c:myData.dsn;Uid=username;Pwd=; Firebird ODBC - IBPhoenix Open Source standard:DRIVER=Firebird/InterBase(r) driver;UID=SYSDBA;PWD=masterkey;DBNAME=D:FIREBIRDexamplesTEST.FDB IBPhoenix ODBC; More info, download etc .NET - Firebird .Net Data Provider standard: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;Serve