中数据库连接方式.doc

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1、ADO.net 中数据库连接方式在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.OleDbConnectionSystem.Data.SqlClient.SqlConnectionSystem.Data.Odbc.OdbcConnectionSystem.Data.OracleClient.OracleConnection下面我们以范例的方式，来依次说明：System.Data.SqlClient.Sq

2、lConnection常用的一些连接字符串(C#代码)：SqlConnection conn = new SqlConnection( Server=(local);Integrated Security=SSPI;database=Pubs);SqlConnection conn = new SqlConnection(server=(local)NetSDK;database=pubs;Integrated Security=SSPI);SqlConnection conn = new SqlConnection(Data Source=localhost;Integrated Secur

3、ity=SSPI;Initial Catalog=Northwind;);SqlConnection conn = new SqlConnection( data source=(local);initial catalog=xr;integrated security=SSPI;persist security info=False;workstation id=XURUI;packet size=4096; );SqlConnection myConn = new System.Data.SqlClient.SqlConnection(Persist Security Info=False

4、;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：System.Data.OleDb.OleDbConnection常用的一些连接字符串(C#代码)：OleDbConnection conn = new OleDbConnection(P

5、rovider=Microsoft.Jet.OLEDB.4.0;Data Source=D:MyWeb8105GrocerToGo.mdb);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

6、Info=False;Integrated Security=yes);OleDbConnection conn = new OleDbConnection(Provider=Microsoft.Jet.OLEDB.4.0; Data Source=c:binLocalAccess40.mdb);OleDbConnection conn = new OleDbConnection(Provider=SQLOLEDB;Data Source=MySQLServer;Integrated Security=SSPI);更多字符串连接说明请看MSDN：System.Data.OracleClient

7、.OracleConnection常用的一些连接字符串(C#代码)：OracleConnection myConn = new System.Data.OracleClient.OracleConnection(Data Source=Oracle8i;Integrated Security=yes);更多字符串连接说明请看MSDN：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_C

8、onnection=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:binnwind.mdb);OdbcConnection conn =

9、new OdbcConnection(Driver=Microsoft Excel Driver (*.xls);DBQ=c:binbook1.xls);OdbcConnection conn = new OdbcConnection(Driver=Microsoft Text Driver (*.txt; *.csv);DBQ=c:bin);OdbcConnection conn = new OdbcConnection(DSN=dsnname);更多字符串连接说明请看MSDN：其他厂商提供的数据库连接：DB2Connection myConn = new IBM.Data.DB2.DB2C

10、onnection(DATABASE = SAMPLE;UID=; PWD=;);DB2Connection myConn = new IBM.Data.DB2.DB2Connection(DATABASE = SAMPLE);BdpConnection myConn = new Borland.Data.Provider.BdpConnection(assembly=Borland.Data.Mssql,Version=1.1.0.0,Culture=neutral,PublicKeyToken=91d62ebb5b0d1b1b;vendorclient=sqloledb.dll;osaut

11、hentication=False;database=;username=;hostname=;password=;provider=MSSQL);BdpConnection myConn = new Borland.Data.Provider.BdpConnection(assembly=Borland.Data.Db2,Version=1.1.0.0,Culture=neutral,PublicKeyToken=91d62ebb5b0d1b1b;vendorclient=db2cli.dll;database=;username=;password=;provider=DB2);Conne

12、ction 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;Integrated 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：