C#中的oracle数据库连接字符串，数据库帮助类，DBHelper.cs

Web.config 配置文件中节点

<connectionStrings>

<add name="ConnectionString" connectionString="Data Source=jde;Persist Security

Info=True;User ID=jde;Password=jde;Unicode=True"

providerName="System.Data.OracleClient"/>

</connectionStrings>

以上是 oracle 数据库的连接字符串

name：连接字符串名

using System;

using System.Data;

using System.Configuration;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

{

public static OracleCommand cmd = null;

public static OracleConnection conn = null;

public static string connstr =

ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

public OraDBHelper()

{ }

#region 建立数据库连接对象

/// <summary>