数据库连接

一．用SqlConnection连接SQL Server

1.加入命名空间

using System.Data.SqlClient;

2.连接数据库

SqlConnection myConnection = new SqlConnection();
myConnection.ConnectionString = "user id=sa;password=sinofindb;initial catalog=test;data source=127.0.0.1;Connect Timeout=30";
myConnection.Open();[@more@]


改进（更通用）的方法：

string MySqlConnection="user id=sa;password=sinofindb;Database =test;data source=127.0.0.1;Connect Timeout=30";
SqlConnection myConnection = new SqlConnection(MySqlConnection);
myConnection.Open();

二.用OleDbConnection连接

1.加入命名空间

using System.Data.OleDb;


2.连接sql server

string MySqlConnection="Provider=SQLOLEDB;Data Source=localhost;Initial Catalog=test;Integrated Security=SSPI;";

SqlConnection myConnection = new SqlConnection(MySqlConnection);
myConnection.Open();



3.连接Access(可通过建立.udl文件获得字符串)

string MySqlConnection="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:db2000.mdb;

Persist Security Info=False;



4.连接Oracle(也可通过OracleConnection连接)

string MySqlConnection="Provider=MSDAORA;Data Source=db; user id=sa;password=sinofindb";

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转载于:http://blog.itpub.net/10291852/viewspace-973359/