asp.net 连接 oracle10g 数据库

首先，进入 oracle 管理

找到 TNS 描述符，然后，复制下来。

进入 asp.net 项目，打开 web.config

<?xml version="1.0" encoding="utf-8"?>

<!--
  有关如何配置 ASP.NET 应用程序的详细消息，请访问
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->

<configuration>
  <appSettings>
    <add key="AccessConnString" value="provider=microsoft.jet.oledb.4.0;data source="/>
    <add key="AccessDbPath" value="~/App_Data/guestbook.mdb"/>
  </appSettings>
  <connectionStrings>
    <add name="AccessConnectionString" connectionString="Provider=Microsoft.Jet.Oledb.4.0;data source="/>
    <add name="Access_Path" connectionString="~/App_Data/guestbook.mdb"/>
    <add name="SqlConnectionString" connectionString="Data Source=localhost;Initial Catalog=HuaRunDb;User ID=sa;password=123456;" providerName="System.Data.SqlClient"/>
    <add name="OracleConnectionString" connectionString="Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=xp2008)(PORT=1521)))(CONNECT_DATA=(SID=guandb)(SERVER=DEDICATED)));User ID=system;Password=k2763826;Unicode=True" providerName="System.Data.OracleClient"/>
  </connectionStrings>
  <system.web>
        <compilation debug="true" targetFramework="4.0" />
    </system.web>

</configuration>

填 写 OracleConnectionString ，

(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=xp2008)(PORT=1521)))(CONNECT_DATA=(SID=guandb)(SERVER=DEDICATED)))

 

这一段就是 oracle10g 的 TNS 描述，然后，在后面写上登录用户名，密码， User ID=system;Password=k2763826;Unicode=True  就可以了。

 

后台程序

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Configuration;
using System.Configuration;
using System.Data.OleDb;
using System.Data;
using System.Data.OracleClient;


public void BindOracle()
        {

            string connstr = System.Web.Configuration.WebConfigurationManager.ConnectionStrings["OracleConnectionString"].ConnectionString;


            OracleConnection oraConn = new OracleConnection(connstr);

            try
            {
                oraConn.Open();
                string sql = "select * from GUANUSER1.GUESTBOOK";
                OracleDataAdapter myadapter = new OracleDataAdapter(sql, oraConn);
                DataSet ds = new DataSet();
                myadapter.Fill(ds);
                this.GridView1.DataSource = ds;
                this.GridView1.DataBind();
                this.Label1.Text = "数据库连接成功！";
            }
            catch (Exception ee)
            {
                this.Label1.Text = ee.ToString();
            }

        }

注意 sql 写法，

string sql = "select * from GUANUSER1.GUESTBOOK";    select * from 用户.表