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[166519] 主题: ADO.net 中数据库连接方式 |
作者: little (渺小) | ||
标题: ADO.net 中数据库连接方式[转载] | ||
来自: 203.95.*.* | ||
发贴时间: 2004年03月03日 23:37:52 | ||
长度: 5152字 | ||
carper(原作)
在MSDN中,.net的数据库连接字符串都有详细的说明,我这里以代码范例 的方式罗列一些,具体的每一项代表的意义可以参看MSDN. ADO.net 中数据库连接方式(微软提供) 微软提供了以下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 下面我们以范例的方式,来依次说明: System.Data.SqlClient.SqlConnection 常用的一些连接字符串(C#代码): SqlConnection conn = new SqlConnection( "Server=(local);Integrated Security=SS PI;database=Pubs"); SqlConnection conn = new SqlConnection("server=(local)\\NetSDK;database=pubs;I ntegrated Security=SSPI"); SqlConnection conn = new SqlConnection( "Data Source=localhost;Integrated Security=SSPI;Initial Cat alog=Northwind;"); SqlConnection conn = new SqlConnection( " data source=(local);initial catalog=xr;integrated securit y=SSPI; persist security info=False;workstation id=XURUI;packet size=409 6; "); SqlConnection myConn = new System.Data.SqlClient.SqlConnection("Persist Security Info= False;Integrated Security=SSPI;database=northwind;server=mySQLServer"); SqlConnection conn = new SqlConnection( " uid=sa;pwd=passwords;initial catalog=pubs;data source=127 .0.0.1;Connect Timeout=900"); 更多字符串连接说明请看MSDN: http://msdn.microsoft.com/library/default.asp?url=/library/en-us /cpref/html/frlrfSystemDataSqlClientSqlConnectionClassConnection StringTopic.asp System.Data.OleDb.OleDbConnection 常用的一些连接字符串(C#代码): OleDbConnection conn = new OleDbConnection(@"Provider=Micro soft.Jet.OLEDB.4.0;Data Source=D:\MyWeb\81\05\GrocerToGo.mdb&quo t;); OleDbConnection conn = new OleDbConnection( @"Provider=Microsoft.Jet.OLEDB.4.0;Password=; User ID=Admin;Data Source=grocertogo.mdb;"); OleDbConnection conn = new OleDbConnection( "Provider=MSDAORA; Data Source=ORACLE8i7;Persist Security I nfo=False;Integrated Security=yes"); OleDbConnection conn = new OleDbConnection( "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=c:\bin\Local Access40.mdb"); OleDbConnection conn = new OleDbConnection( "Provider=SQLOLEDB;Data Source=MySQLServer;Integrated Secur ity=SSPI"); 更多字符串连接说明请看MSDN: http://msdn.microsoft.com/library/default.asp?url=/library/en-us /cpref/html/frlrfSystemDataOleDbOleDbConnectionClassConnectionSt ringTopic.asp?frame=true System.Data.OracleClient.OracleConnection 常用的一些连接字符串(C#代码): OracleConnection myConn = new System.Data.OracleClient.OracleCon nection( "Data Source=Oracle8i;Integrated Security=yes"); 更多字符串连接说明请看MSDN: http://msdn.microsoft.com/library/default.asp?url=/library/en-us /cpref/html/frlrfSystemDataOracleClientOracleConnectionClassConn ectionStringTopic.asp?frame=true System.Data.Odbc.OdbcConnection 常用的一些连接字符串(C#代码): OdbcConnection conn = new OdbcConnection( "Driver={SQL Server};Server=MyServer;Trusted_Connection=yes ;Database=Northwind;"); OdbcConnection conn = new OdbcConnection( "Driver={Microsoft ODBC for Oracle};Server=ORACLE8i7; Persist Security Info=False;Trusted_Connection=yes"); OdbcConnection conn = new OdbcConnection( "Driver={Microsoft Access Driver (*.mdb)};DBQ=c:\bin\nwind. mdb"); OdbcConnection conn = new OdbcConnection( "Driver={Microsoft Excel Driver (*.xls)};DBQ=c:\bin\book1.x ls"); OdbcConnection conn = new OdbcConnection( "Driver={Microsoft Text Driver (*.txt; *.csv)};DBQ=c:\bin&q uot;); OdbcConnection conn = new OdbcConnection("DSN=dsnname" ); 更多字符串连接说明请看MSDN: http://msdn.microsoft.com/library/default.asp?url=/library/en-us /cpref/html/frlrfSystemDataOdbcOdbcConnectionClassConnectionStri ngTopic.asp?frame=true 其他厂商提供的数据库连接: DB2Connection myConn = new IBM.Data.DB2.DB2Connection( "DATABASE = SAMPLE;UID=<username>; PWD=<password&g t;;"); DB2Connection myConn = new IBM.Data.DB2.DB2Connection("DATA BASE = SAMPLE"); BdpConnection myConn = new Borland.Data.Provider.BdpConnection(& quot;assembly=Borl and.Data.Mssql,Version=1.1.0.0,Culture=neutral,PublicKeyToken=91 d62ebb5b0d1b1b;ve ndorclient=sqloledb.dll;osauthentication=False;database=<data base>;usernam e=<user>;hostname=<host>;password=<password>;p rovider=MSSQL"); BdpConnection myConn = new Borland.Data.Provider.BdpConnection(& quot;assembly=Borl and.Data.Db2,Version=1.1.0.0,Culture=neutral,PublicKeyToken=91d6 2ebb5b0d1b1b;ve ndorclient=db2cli.dll;database=<database>;username=<use r>; password=<password>;provider=DB2"); Connection Pooling 在SQL Server、OLE DB和.NET框架结构中的Data Provider中,都提供了隐 式的连接池连接支持。你可以在ConnectionString中指定不同的参数值控 制连接池的行为。比如下面的例子使OLE DB的连接池无效并自动地进行事 务处理: Provider=SQLOLEDB;OLE DB Services=-4;Data Source=localhost;Integ rated Security=SSPI; 在SQL Server.NET Data Provider中提供了以下参数设置控制连接池的行 为:Connection Lifttime、Connection Reset、Enlist、Max Pool Size 、Min Pool Size和Pooling。 更多数据库连接信息,以及非ADO.net的连接字符串可以参看: http://www.connectionstrings.com/ |
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