Connecting various database string connectors in asp.net (mysql/mssql/access) (1/2)

Source: Internet
Author: User
Tags dsn mssql ole

MSSQL Connection string

(1) OLE DB
Windows Authentication

The code is as follows Copy Code
"Provider=sqloledb;data source=pek7-6tkx23xsqlexpress;initial catalog=test; Trusted_connection=yes; ";
SQL Server Authentication
"Provider=sqloledb;data source=127.0.0.1sqlexpress;initial catalog=test; User Id=sa; password=123456; ";

(2) SqlConnection
Windows Authentication

The code is as follows Copy Code
"Data source=pek7-6tkx23xsqlexpress;initial catalog=test; Trusted_connection=yes; ";
SQL Server Authentication
"Server=127.0.0.1sqlexpress;database=test; Uid=sa; password=123456 ";

(3) ODBC

The code is as follows Copy Code
Driver={sql Server}; server= server IP; database= database name; uid= user name; pwd= password;

(4) DSN method

The code is as follows Copy Code
DSN=DSN name; uid= user name; pwd= password;

Example: MySQL sample

The code is as follows Copy Code

Using System;
Using System.Collections.Generic;
Using System.Data;
Using System.Data.Common;
Using System.Linq;
Using System.Text;
Using System.Data.OleDb;
Using System.Data.SqlClient;
Using SYSTEM.DATA.SQL;

Namespace ADO
{
public class ConnectionDemo1
{
public void getoledbtable ()
{
#region namespace
Using System.Data.OleDb;
#endregion

#region OLE DB Access

OLE DB
How C # connects to access

Access 2003 provider=microsoft.jet.oledb.4.0
Access 2007 provider=microsoft.ace.oledb.12.0

           //(1) No database password, no user password, shared mode open
            //"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=d: QJX document GENERICDEMODATASTUDENT.ACCDB; "
           //(2) has a database password, no user password, which is open exclusively
            //"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=d: QJX document GENERICDEMODATASTUDENT.ACCDB; Jet oledb:database password=123 "
           //(3) There is a database password, there is a user password can use this method, but the user password even if a password must be empty, this way to open the exclusive
            //"Provider=Microsoft.Jet.OLEDB.4.0;Data SOURCE=D:QJX document GENERICDEMODATASTUDENT.ACCDB; Jet oledb:database password=12345; Persist security Info=true;password=;user id=admin "

#endregion

#region OLE DB MSSQL

OLE DB
C # How to connect to MSSQL

Windows Authentication
"Provider=sqloledb;data source=pek7-6tkx23xsqlexpress;initial catalog=test; Trusted_connection=yes; ";
SQL Server Authentication
"Provider=sqloledb;data source=127.0.0.1sqlexpress;initial catalog=test; User Id=sa; password=123456; ";

#endregion

#region OLE DB Oracle
OLE DB
C # ways to connect Oracle

"Provider=msdaora;data Source=mydatabasealias; User Id=myuid; Password=mypassword ";
#endregion

String strconn = @ "Provider=microsoft.ace.oledb.12.0;data SOURCE=D:QJX document GENERICDEMODATASTUDENT.ACCDB; Jet oledb:database password=123 ";//access 2007
String strconn =
@ "Provider=sqloledb;data source=127.0.0.1sqlexpress;initial catalog=test; User Id=sa; password=123456; ";
OleDbConnection conn = new OleDbConnection (strconn);
OleDbCommand comm = new OleDbCommand ();

Comm.commandtext = "SELECT * from Users";
Comm.commandtype = CommandType.Text;
Comm. Connection = conn;
IF (Conn. State!= ConnectionState.Open)
{
Conn. Open ();
DataSet ds = new DataSet ();
OleDbDataAdapter da = new OleDbDataAdapter (comm);
Da. Fill (DS);
Conn. Close ();
}
}

public void getsqlconnectiontable ()
{
#region namespace
Using System.Data.SqlClient;
#endregion

#region MSSQL SqlConnection
SqlConnection
C # How to connect to MSSQL

Windows Authentication
"Data source=pek7-6tkx23xsqlexpress;initial catalog=test; Trusted_connection=yes; ";
SQL Server Authentication
"Server=127.0.0.1sqlexpress;database=test; Uid=sa; password=123456 ";
#endregion

           //string strconn = @ "server= 127.0.0.1sqlexpress;database=test; Uid=sa; password=123456 ";
            String strconn = @ "Data source= Pek7-6tkx23xsqlexpress;initial catalog=test; Trusted_connection=yes; ";
           
             SqlConnection conn = new SqlConnection (strconn);
            SqlCommand comm = new SqlCommand ();
            comm.commandtext = "SELECT * from Users";
            comm.commandtype = CommandType.Text;
            Comm. Connection = conn;

IF (Conn. State!=connectionstate.open)
{
Conn. Open ();
DataSet ds = new DataSet ();
SqlDataAdapter da = new SqlDataAdapter (comm);
Da. Fill (DS);
Conn. Close ();
}

}
}
}

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