C#连接Oracle数据库基本类

C#用来连接oracle数据库的基本类：

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Configuration;
    using System.Data;
    using Oracle.DataAccess.Client;

    namespace DLL.Base
   {
       /// <summary>
       /// oracle数据库基础类
       /// </summary>
       public class OracleDBContent
       {
           #region 私有
           #region 私有属性
           /// <summary>
           /// 获取数据库连接字符串
           /// </summary>
           private static string _connectstring = ConfigurationManager.ConnectionStrings["OraConn"].ConnectionString;
           #endregion

           #region 私有方法
           /// <summary>
           /// 获取数据（查询）
           /// </summary>
           /// <param name="sql">要执行的SQL语句</param>
           /// <returns></returns>
           private DataSet _GET(string sql)
           {
               try
               {
                   DataSet dt = new DataSet();
                   OracleConnection connect = new OracleConnection(_connectstring);
                   connect.Open();
                   OracleDataAdapter db = new OracleDataAdapter(sql, connect);
                   db.Fill(dt);
                   connect.Close();
                   return dt;
               }
               catch (Exception ex)
               {
                   throw new Exception(ex.Message);
               }
           }

           /// <summary>
           /// 执行SQl语句（增、删、改）
           /// </summary>
           /// <param name="sql">要执行的SQl语句</param>
           /// <returns></returns>
           private bool _EXCUTE(string sql)
           {
               try
               {
                   OracleConnection connect = new OracleConnection(_connectstring);
                   OracleCommand cmd = new OracleCommand();
                   cmd.Connection = connect;
                   cmd.CommandText = sql;
                   connect.Open();
                   cmd.ExecuteNonQuery();
                   connect.Close();
                   return true;
               }
               catch (Exception ex)
               {
                   throw new Exception(ex.Message);
               }
           }
           #endregion
           #endregion

           #region 公共方法
           /// <summary>
           /// 查询
           /// </summary>
           /// <param name="sql">数据库查询语句</param>
           /// <returns></returns>
           public virtual DataSet GetData(string sql)
           {
               try
               {
                   string sqlstr = sql;
                   return _GET(sqlstr);
               }
               catch (Exception ex)
               {
                   throw new Exception(ex.Message);
               }
           }

           /// <summary>
           /// 新增
           /// </summary>
           /// <param name="sql">新增语句</param>
           /// <returns></returns>
           public virtual bool Insert(string sql)
          {
              try
              {
                  return _EXCUTE(sql);
              }
              catch (Exception ex)
              {
                  throw new Exception(ex.Message);
              }
          }

          /// <summary>
          /// 删除
          /// </summary>
          /// <param name="sql">删除语句</param>
          /// <returns></returns>
          public virtual bool Delete(string sql)
          {
              try
              {
                  return _EXCUTE(sql);
              }
              catch (Exception ex)
              {
                  throw new Exception(ex.Message);
              }
          }

          /// <summary>
          /// 更新
          /// </summary>
          /// <param name="sql">更新语句</param>
          /// <returns></returns>
          public virtual bool Update(string sql)
          {
              try
              {
                  return _EXCUTE(sql);
              }
              catch (Exception ex)
              {
                  throw new Exception(ex.Message);
              }
          }
          #endregion
      }
  }

(Web.config或App.config)配置文件中数据库连接的配置：

  <?xml version="1.0" encoding="utf-8"?>
  <configuration>
    <connectionStrings>
      <!--测试数据库-->
      <add name="OraConn" connectionString="Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.172)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=Test)));User Id=sa;Password=test123;"/>
    </connectionStrings>
   <system.web>
     <compilation debug="true" targetFramework="4.0" />
   </system.web>
   <system.serviceModel>
     <behaviors>
       <serviceBehaviors>
         <behavior>
           <!-- 为避免泄漏元数据信息，请在部署前将以下值设置为 false 并删除上面的元数据终结点 -->
           <serviceMetadata httpGetEnabled="true"/>
           <!-- 要接收故障异常详细信息以进行调试，请将以下值设置为 true。在部署前设置为 false 以避免泄漏异常信息 -->
           <serviceDebug includeExceptionDetailInFaults="false"/>
         </behavior>
       </serviceBehaviors>
     </behaviors>
     <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
   </system.serviceModel>
  <system.webServer>
     <modules runAllManagedModulesForAllRequests="true"/>
   </system.webServer>

 </configuration>