从asp.net应用程序调用oracle存储过程

时间:2011-01-13 06:12:17

标签: asp.net oracle stored-procedures

在我的asp.net应用程序中,我正在调用存储过程(oracle)从数据库中获取一些值。

以下是sp:

create or replace PROCEDURE GetUserData(

--SQLWAYS_EVAL# ARCHAR(100)
UserName  IN NVARCHAR2, v_refcur OUT SYS_REFCURSOR)
   as
BEGIN
   BEGIN --SQLWAYS_EVAL# =@Password;
      open v_refcur for SELECT  StaffId,
                UserName,
                Password,
                Pin,
                LastUpdateId,
                LastUpdateDate,
                FullName,
                PinFailedAttempts,
                PinFailedDate
      FROM UserData
      WHERE UserName = UserName;


   END;

   RETURN; 
END;

任何人都可以帮我解决如何从我的asp.net代码中调用此sp。

2 个答案:

答案 0 :(得分:1)

使用ODP,您可以执行以下操作:

使存储过程成为一个函数,该函数在参数中获取用户名并返回一个refcursor

create or replace FUNCTION GetUserData(UserName IN NVARCHAR2) RETURN SYS_REFCURSOR;

然后

using (var connection = new OracleConnection(connectionString))
{
  using (var command = new OracleCommand("GetUserData", connection))
  {
     command.CommandType = CommandType.StoredProcedure;
     command.BindByName = true;

     // Return value parameter has to be added first !
     var returnValueParameter = new OracleParameter();
     returnValueParameter.Direction = ParameterDirection.ReturnValue;
     returnValueParameter.OracleDbType = ParameterDirection.RefCursor;
     command.Parameters.Add(returnValueParameter);

     var userNameParameter = command.Parameters.Add("UserName", userName);
     returnValueParameter.Direction = ParameterDirection.In;

     using (OracleDataReader reader = command.ExecuteReader())
     {
        while (reader.Read())
        {
           // Read the current record's fields
        }
     }
  }
}

答案 1 :(得分:1)

Microsoft Enterprise Library简化了Oracle存储过程的发现和绑定。在Business Objects和Oracle数据库之间构建数据访问层并不困难。如今,我更喜欢ORM工具,比如DevExpress的XPO,它在最新版本中支持调用存储过程。但是,Microsoft Entlib是免费的,而DevExpress则不是。

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Common;
using Microsoft.Practices.EnterpriseLibrary.Data;
using Your.BusinessObjects;

namespace DataAccess
{
   public class UserDataDAL
   {
      public static Database dataBase = DatabaseFactory.CreateDatabase(); ///< Use default connection string configured in web.config

      public static List<UserInfo> GetData(string userName)
      {
        List<UserInfo> listOfUserInfo = new List<UserInfo>();
        UserInfo userInfo;

        DbCommand cmd = dataBase.GetStoredProcCommand("SCHEMA.GETUSERDATA");
        dataBase.DiscoverParameters(cmd);

        dataBase.SetParameterValue(cmd, "USERNAME", userName);

        using (IDataReader dr = dataBase.ExecuteReader(cmd))
        {

            while (dr.Read())
            {
                userInfo = new UserInfo();

                userInfo.StaffId = dr["STAFFID"] != DBNull.Value ? Convert.ToInt32(dr["STAFFID"]) : 0;
                userInfo.UserName = dr["USERNAME"] != DBNull.Value ? Convert.ToString(dr["USERNAME"]) : String.Empty;
                userInfo.Password = dr["PASSWORD"] != DBNull.Value ? Convert.ToString(dr["PASSWORD"]) : String.Empty;
                userInfo.LastUpdateId = Convert.ToInt32(dr["LASTUPDATEID"]);
                userInfo.LastUpdateDate = dr["LASTUPDATEDATE"] != null ? Convert.ToDateTime(dr["LASTUPDATEDATE"]) : new DateTime();

                listOfUserInfo.Add(userInfo);
            }
        }
        return listOfUserInfo;
      }
   }
 }

如果您只想从程序中返回一行,那么您可以返回列表中的第一项(如果存在等)。