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。
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)。