正题:
一. 在VS2010中连接 Oracle数据库有两种方法:
第一种:微软提供的连接方法 : using System.Data.OracleClient;
第二种:Oracle自己提供的方法:using Oracle.DataAccess.Client;
连接字符串:
connectionString="Password=czh;User ID=czh;Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=XXX.XXX.XXX.XXX)(PORT=1521)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=skydream)));"
1. 微软提供的连接方法 : using System.Data.OracleClient;
测试例程:
··1.在VS2010新建控制台应用程序(C#);
··2.右键、引用,在.NET中选择System.Data.OracleClient;(注明:找不到System.Data.OracleClient 请看此链接:http://blog.csdn.net/makenothing/article/details/17187965)
··3.在程序中 using System.Data.OracleClient;
using
System
;
using
System.Collections.Generic
;
using
System.Linq
;
using
System.Text
;
using
System.Data.OracleClient
;
namespace
ConsoleApplication2
{
class
Program
{
static
void
Main
(
string
[]
args
)
{
string
connectionString
;
string
queryString
;
connectionString
=
"Data Source=202.200.136.125/orcl;User ID=openlab;PassWord=open123"
;
queryString
=
"SELECT * FROM T_USER"
;
OracleConnection
myConnection
=
new
OracleConnection
(
connectionString
);
OracleCommand
myORACCommand
=
myConnection
.
CreateCommand
();
myORACCommand
.
CommandText
=
queryString
;
myConnection
.
Open
();
OracleDataReader
myDataReader
=
myORACCommand
.
ExecuteReader
();
myDataReader
.
Read
();
Console
.
WriteLine
(
"email: "
+
myDataReader
[
"EMAIL"
]);
myDataReader
.
Close
();
myConnection
.
Close
();
}
}
}
2.Oracle自己提供的方法:using Oracle.DataAccess.Client;
前提条件:安装oracle或者oracle client(说明:oracle client比较小,本人安装的是client)下载地址:http://pan.baidu.com/share/link?shareid=462035167&uk=2098256597
以及安装 Oracle Client 教程链接:http://www.cnblogs.com/jiguixin/archive/2011/09/09/2172672.html
··1.在VS2010新建控制台应用程序(C#);
··2.右键、引用,在.NET/组件中选择Oracle.DataAccess.Client;如果找不到则选择 浏览,进入到oracleclient的安装目录寻找 Oracle.Data.Access.dll (典型目录为:E:\app\Administrator\product\11.2.0\client_1\ODP.NET\bin\2.x\Oracle.Data>Access.dll)
··3.程序中添加引用:using Oracle.DataAccess.Client;
using System; using System.Collections.Generic; using System.Linq; using System.Text; using Oracle.DataAccess.Client; namespace testConnectionOracle { class Program { static void Main(string[] args) { string connectionString; string queryString; connectionString = "Data Source=202.200.155.123/orcl;User ID=openlab;PassWord=open123"; queryString = "SELECT * FROM T_USER"; OracleConnection myConnection = new OracleConnection(connectionString); OracleCommand myORACCommand = myConnection.CreateCommand(); myORACCommand.CommandText = queryString; myConnection.Open(); OracleDataReader myDataReader = myORACCommand.ExecuteReader(); myDataReader.Read(); Console.WriteLine("email: " + myDataReader["EMAIL"]); myDataReader.Close(); myConnection.Close(); } } }