orcl数据库连接字符串+DbHelperOra

Web.config

1.需要Net Manager DB本地监听
<add key="ZXBDB_Connection" value="Data Source=ehrorcl;User ID=ehrorcl;pwd=ehrorcl;max pool size=512;" />

2.ip数据据库直连
<add key="ZXBDB_Connection" value="Data Source=(DESCRIPTION = (ADDRESS_LIST= (ADDRESS = (PROTOCOL = TCP)(HOST = 10.xxx.xxx.254)(PORT = 1521)) ) (CONNECT_DATA= (SID = ehrorcl)));User Id=ehrorcl;Password=ehrorcl;" />

DbHelperOra

using System;
using System.Collections;
using System.Collections.Specialized;
using System.Data;
using System.Data.OracleClient;
using System.Configuration;
using System.Collections.Generic;
using System.Security.Cryptography;
using System.Text;
using System.Reflection;
using System.Linq;
using Newtonsoft.Json;


namespace Maticsoft.DBUtility
{
    /// <summary>
    /// Copyright (C) Maticsoft
    /// 数据访问基础类(基于Oracle)
    /// 可以用户可以修改满足自己项目的需要。
    /// </summary>
    public abstract class DbHelperOra
    {
        //数据库连接字符串(web.config来配置)，可以动态更改connectionString支持多数据库.		
        [Obsolete]
        public static string connectionString = ConfigurationSettings.AppSettings["ZXBDB_Connection"].ToString();
        public DbHelperOra()
        {
        }

        ///// <summary>
        ///// 查询并返回多个table
        ///// </summary>
        ///// <param name="strWhere"></param>
        ///// <returns></returns>
        //public static DataSet GetList(List<string> ListSql)
        //{
        //    return DB_Help_Oracle.Query(ListSql);
        //}

        /// <summary>
        /// 查询并返回多个table
        /// </summary>
        /// <param name="strWhere"></param>
        /// <returns></returns>
        public static int GetCount(string strsql)
        {
            return DbHelperOra.Query(strsql).Tables[0].Rows.Count;
        }

        ///   <summary>   
        ///   3des解密字符串   
        ///   </summary>   
        ///   <param   name="paramString">要解密的字符串</param>   
        ///   <param   name="paramKey">密钥</param>   
        ///   <returns>解密后的字符串</returns>    
        ///   <remarks>静态方法，采用默认ascii编码</remarks>   
        public static string Decrypt3DES(string paramString, string paramKey)
        {
            TripleDESCryptoServiceProvider DES = new
                TripleDESCryptoServiceProvider();
            MD5CryptoServiceProvider hashMD5 = new MD5CryptoServiceProvider();

            DES.Key = hashMD5.ComputeHash(ASCIIEncoding.ASCII.GetBytes(paramKey));
            DES.Mode = CipherMode.ECB;

            ICryptoTransform DESDecrypt = DES.CreateDecryptor();

            string result = "";
            try
            {
                byte[] Buffer = Convert.FromBase64String(paramString);
                result = ASCIIEncoding.ASCII.GetString(DESDecrypt.TransformFinalBlock(Buffer, 0, Buffer.Length));
            }
            catch (Exception e)
            {
                throw (new Exception("Invalid Key or input string is not a valid base64 string", e));
            }

            return result;
        }
        ///   <summary>   
        ///   3des加密字符串   
        ///   </summary>   
        ///   <param   name="paramString">要加密的字符串</param>   
        ///   <param   name="paramKey">密钥</param>   
        ///   <returns>加密后并经base64编码的字符串</returns>   
        ///   <remarks>静态方法，采用默认ascii编码</remarks> 
        public static string Encrypt3DES(string paramString, string paramKey)
        {
            TripleDESCryptoServiceProvider DES = new TripleDESCryptoServiceProvider();
            MD5CryptoServiceProvider hashMD5 = new MD5CryptoServiceProvider();

            DES.Key = hashMD5.ComputeHash(ASCIIEncoding.ASCII.GetBytes(paramKey));
            DES.Mode = CipherMode.ECB;

            ICryptoTransform DESEncrypt = DES.CreateEncryptor();

            byte[] Buffer = ASCIIEncoding.ASCII.GetBytes(paramString);
            return Convert.ToBase64String(DESEncrypt.TransformFinalBlock(Buffer, 0, Buffer.Length));
        }


        ///   <summary>   
        ///   3des解密字符串   
        ///   </summary>   
        ///   <param   name="paramString">要解密的字符串</param>   
        ///   <param   name="paramKey">密钥</param>   
        ///   <param   name="paramEncoding">编码方式</param>   
        ///   <returns>解密后的字符串</returns>   
        ///   <remarks>静态方法，指定编码方式</remarks>   
        public static string Decrypt3DES(string paramString, string paramKey, Encoding paramEncoding)
        {
            TripleDESCryptoServiceProvider DES = new TripleDESCryptoServiceProvider();
            MD5CryptoServiceProvider hashMD5 = new MD5CryptoServiceProvider();

            DES.Key = hashMD5.ComputeHash(paramEncoding.GetBytes(paramKey));
            DES.Mode = CipherMode.ECB;

            ICryptoTransform DESDecrypt = DES.CreateDecryptor();

            string result = "";
            try
            {
                byte[] Buffer = Convert.FromBase64String(paramString);
                result = paramEncoding.GetString(DESDecrypt.TransformFinalBlock
                    (Buffer, 0, Buffer.Length));
            }
            catch (Exception e)
            {
                throw (new Exception("Invalid Key or input string is not a valid base64 string", e));
            }

            return result;
        }


        #region 公用方法

        public static int GetMaxID(string FieldName, string TableName)
        {
            string strsql = "select max(" + FieldName + ")+1 from " + TableName;
            object obj = GetSingle(strsql);
            if (obj == null)
            {
                return 1;
            }
            else
            {
                return int.Parse(obj.ToString());
            }
        }
        public static bool Exists(string strSql)
        {
            object obj = GetSingle(strSql);
            int cmdresult;
            if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
            {
                cmdresult = 0;
            }
            else
            {
                cmdresult = int.Parse(obj.ToString());
            }
            if (cmdresult == 0)
            {
                return false;
            }
            else
            {
                return true;
            }
        }

        public static bool Exists(string strSql, params OracleParameter[] cmdParms)
        {
            object obj = GetSingle(strSql, cmdParms);
            int cmdresult;
            if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
            {
                cmdresult = 0;
            }
            else
            {
                cmdresult = int.Parse(obj.ToString());
            }
            if (cmdresult == 0)
            {
                return false;
            }
            else
            {
                return true;
            }
        }


        #endregion


        #region  执行简单SQL语句

        /// <summary>
        /// 执行SQL语句，返回影响的记录数
        /// </summary>
        /// <param name="SQLString">SQL语句</param>
        /// <returns>影响的记录数</returns>
        [Obsolete]
        public static int ExecuteSql(string SQLString)
        {
            using (OracleConnection connection = new OracleConnection(connectionString))
            {
                using (OracleCommand cmd = new OracleCommand(SQLString, connection))
                {
                    try
                    {
                        connection.Open();
                        int rows = cmd.ExecuteNonQuery();
                        return rows;
                    }
                    catch (System.Data.OracleClient.OracleException E)
                    {
                        connection.Close();
                        throw new Exception(E.Message);
                    }
                }
            }
        }
        /// <summary>
        /// 执行多条SQL语句，实现数据库事务。
        /// </summary>
        /// <param name="SQLStringList">多条SQL语句</param>		
        public static int ExecuteSqlTran(List<String> strsqllist)
        {
            using (OracleConnection conn = new OracleConnection(connectionString))
            {
                conn.Open();
                int result = 0;
                OracleCommand cmd = new OracleCommand();
                cmd.Connection = conn;
                OracleTransaction tx = conn.BeginTransaction();
                cmd.Transaction = tx;
                try
                {
                    for (int n = 0; n < strsqllist.Count; n++)
                    {
                        string strsql = strsqllist[n].ToString();
                        if (strsql.Trim().Length > 1)
                        {
                            cmd.CommandText = strsql;

                            result += cmd.ExecuteNonQuery();
                        }
                    }
                    tx.Commit();
                }
                catch (System.Data.OracleClient.OracleException E)
                {
                    tx.Rollback();
                    throw new Exception(E.Message);
                }
                return result;
            }
        }
        /// <summary>
        /// 执行多条SQL语句，实现数据库事务。
        /// </summary>
        /// <param name="SQLStringList">多条SQL语句</param>		
        public static int ExecuteSqlTran(ArrayList SQLStringList)
        {
            using (OracleConnection conn = new OracleConnection(connectionString))
            {
                conn.Open();
                OracleCommand cmd = new OracleCommand();
                cmd.Connection = conn;
                OracleTransaction tx = conn.BeginTransaction();
                cmd.Transaction = tx;
                try
                {
                    int count = 0;

                    for (int n = 0; n < SQLStringList.Count; n++)
                    {
                        string strsql = SQLStringList[n].ToString();
                        if (strsql.Trim().Length > 1)
                        {
                            count++;
                            cmd.CommandText = strsql;
                            cmd.ExecuteNonQuery();
                        }
                    }
                    tx.Commit();
                    return count;
                }
                catch (System.Data.OracleClient.OracleException E)
                {

                    tx.Rollback();
                    /*throw new */                    //Exception(E.Message);
                    return -1;
                }
            }
        }
        /// <summary>
        /// 执行带一个存储过程参数的的SQL语句。
        /// </summary>
        /// <param name="SQLString">SQL语句</param>
        /// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
        /// <returns>影响的记录数</returns>
        public static int ExecuteSql(string SQLString, string content)
        {
            using (OracleConnection connection = new OracleConnection(connectionString))
            {
                OracleCommand cmd = new OracleCommand(SQLString, connection);
                OracleParameter myParameter = new OracleParameter("@content", OracleType.NVarChar);
                myParameter.Value = content;
                cmd.Parameters.Add(myParameter);
                try
                {
                    connection.Open();
                    int rows = cmd.ExecuteNonQuery();
                    return rows;
                }
                catch (System.Data.OracleClient.OracleException E)
                {
                    throw new Exception(E.Message);
                }
                finally
                {
                    cmd.Dispose();
                    connection.Close();
                }
            }
        }



        /// <summary>
        /// 执行查询语句，返回DataSet
        /// </summary>
        /// <param name="SQLString">查询语句</param>
        /// <returns>DataSet</returns>
        [Obsolete]
        public static DataSet Query(List<string> lst)
        {
            DataSet ds = new DataSet();

            StringBuilder strSql = new StringBuilder();

            using (OracleConnection connection = new OracleConnection(connectionString))
            {
                connection.Open();

                OracleCommand cmd = new OracleCommand();
                cmd.Connection = connection;

                strSql.Append("begin ");
                for (int i = 0; i < lst.Count; i++)
                {
                    string paraName = "p_cursor_" + i;

                    strSql.AppendFormat("open :{0} for {1}; ", paraName, lst[i]);

                    cmd.Parameters.Add(paraName, OracleType.Cursor);
                    cmd.Parameters[paraName].Direction = ParameterDirection.Output;
                    cmd.Parameters[paraName].Value = "sql";//这里填写任意 但不能为空！
                }

                strSql.Append("end;");

                cmd.CommandText = strSql.ToString();

                OracleDataAdapter da = new OracleDataAdapter();
                da.SelectCommand = cmd;
                da.Fill(ds);
            }
            return ds;
        }


        /// <summary>
        /// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例)
        /// </summary>
        /// <param name="strSQL">SQL语句</param>
        /// <param name="fs">图像字节,数据库的字段类型为image的情况</param>
        /// <returns>影响的记录数</returns>


        /// <summary>
        /// 执行一条计算查询结果语句，返回查询结果（object）。
        /// </summary>
        /// <param name="SQLString">计算查询结果语句</param>
        /// <returns>查询结果（object）</returns>
        public static object GetSingle(string SQLString)
        {
            using (OracleConnection connection = new OracleConnection(connectionString))
            {
                using (OracleCommand cmd = new OracleCommand(SQLString, connection))
                {
                    try
                    {
                        connection.Open();
                        object obj = cmd.ExecuteScalar();
                        if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                        {
                            return null;
                        }
                        else
                        {
                            return obj;
                        }
                    }
                    catch (System.Data.OracleClient.OracleException e)
                    {
                        connection.Close();
                        throw new Exception(e.Message);
                    }
                }
            }
        }
        /// <summary>
        /// 执行查询语句，返回OracleDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close )
        /// </summary>
        /// <param name="strSQL">查询语句</param>
        /// <returns>OracleDataReader</returns>
        public static OracleDataReader ExecuteReader(string strSQL)
        {
            OracleConnection connection = new OracleConnection(connectionString);
            OracleCommand cmd = new OracleCommand(strSQL, connection);
            try
            {
                connection.Open();
                OracleDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                return myReader;
            }
            catch (System.Data.OracleClient.OracleException e)
            {
                throw new Exception(e.Message);
            }

        }

        /// <summary>
        /// 执行查询语句，返回DataSet
        /// </summary>
        /// <param name="SQLString">查询语句</param>
        /// <returns>DataSet</returns>
        public static DataSet Query(string SQLString)
        {
            using (OracleConnection connection = new OracleConnection(connectionString))
            {
                DataSet ds = new DataSet();
                try
                {
                    connection.Open();
                    OracleDataAdapter command = new OracleDataAdapter(SQLString, connection);
                    command.Fill(ds, "ds");
                }
                catch (System.Data.OracleClient.OracleException ex)
                {
                    throw new Exception(ex.Message);
                }
                return ds;
            }
        }

        /// <summary>
        /// 执行查询语句，返回DataTable
        /// </summary>
        /// <param name="SQLString">查询语句</param>
        /// <returns>DataSet</returns>
        public static DataTable GetTable(string SQLString)
        {
            using (OracleConnection connection = new OracleConnection(connectionString))
            {
                DataSet ds = new DataSet();
                try
                {
                    connection.Open();
                    OracleDataAdapter command = new OracleDataAdapter(SQLString, connection);
                    command.Fill(ds, "ds");
                }
                catch (System.Data.OracleClient.OracleException ex)
                {
                    throw new Exception(ex.Message);
                }
                return ds.Tables[0];
            }
        }

        //集成的GetList
        public static DataTable GetList(string Colunms, string Table, string str_where)
        {
            DataTable dt = new DataTable();

            if (!string.IsNullOrEmpty(str_where))
            {
                str_where = " where 1=1  " + str_where;
            }
            string sql = " select  " + Colunms + "  from " + Table + str_where;

            dt = DbHelperOra.GetTable(sql);

            return dt;
        }


        /// <summary>
        /// 获取自增量字符串
        /// </summary>
        /// <param name="Table">表名</param>
        /// <returns></returns>
        public static string SeqNextVal(string Table)
        {
            string nextval = "" + Table + "_SEQ.NEXTVAL";
            return nextval;
        }


        /// <summary>
        /// 获取自增量字符串
        /// </summary>
        /// <param name="Table">表名</param>
        /// <returns></returns>
        public static string GetNextValSQL(string Table)
        {
            string nextval = "(SELECT " + Table + "_SEQ.NEXTVAL FROM DUAL)";
            return nextval;
        }

        /// <summary>
        /// 获取自增列值
        /// </summary>
        /// <param name="Table">表名</param>
        /// <returns></returns>
        public static string GetSeqNextVal(string Table)
        {
            string strsql = "SELECT " + Table + "_SEQ.NEXTVAL FROM DUAL";
            DataTable dt = DbHelperOra.Query(strsql).Tables[0];
            if (dt.Rows.Count > 0)
            {
                return dt.Rows[0][0].ToString();
            }
            else
            {
                string GUID_KEY = Guid.NewGuid().ToString(); ;

                return GUID_KEY;
            }
        }



        /// <summary>
        /// (泛型)Table转List
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="dt"></param>
        /// <returns></returns>
        public static List<T> ConvertToEx<T>(DataTable dt) where T : new()
        {
            if (dt == null)
            {
                return new List<T>();
            }

            Type type = typeof(T);
            List<T> list = new List<T>();
            string tempName = string.Empty;
            foreach (DataRow row in dt.Rows)
            {
                PropertyInfo[] pArray = type.GetProperties();
                T entity = new T();
                foreach (PropertyInfo p in pArray)
                {

                    tempName = p.Name;
                    if (!p.CanWrite) continue;
                    object value = row[tempName];
                    if (value != DBNull.Value) p.SetValue(entity, value, null);

                }
                list.Add(entity);
            }
            return list;
        }

        /// <summary>
        /// jjq-传入sql查询后返回list==>必须是select * from
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="sql"></param>
        /// <returns></returns>
        public static List<T> GetList<T>(string sql) where T : new()
        {
            List<T> toList = ConvertToEx<T>(Query(sql).Tables[0]);
            return toList;
        }
        /// <summary>
        /// table转json
        /// </summary>
        /// <param name="table"></param>
        /// <returns></returns>
        public static string GetTableJson(string sql)
        {
            DataTable dt = Query(sql).Tables[0];
            string JsonString = string.Empty;
            JsonString = JsonConvert.SerializeObject(dt);
            return JsonString;
        }

        /// <summary>
        /// 字段格式化用法 和oracle的TO_DATE用法一致
        /// </summary>
        public static string TO_DATE(string field)
        {
            string sql = "TO_DATE('{0}', 'YYYY-MM-DD')";

            return string.Format(sql, field);
        }
































        #endregion

        #region 执行带参数的SQL语句

        /// <summary>
        /// 执行SQL语句，返回影响的记录数
        /// </summary>
        /// <param name="SQLString">SQL语句</param>
        /// <returns>影响的记录数</returns>
        public static int ExecuteSql(string SQLString, params OracleParameter[] cmdParms)
        {
            using (OracleConnection connection = new OracleConnection(connectionString))
            {
                using (OracleCommand cmd = new OracleCommand())
                {
                    try
                    {
                        PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                        int rows = cmd.ExecuteNonQuery();
                        cmd.Parameters.Clear();
                        return rows;
                    }
                    catch (System.Data.OracleClient.OracleException E)
                    {
                        throw new Exception(E.Message);
                    }
                }
            }
        }


        /// <summary>
        /// 执行多条SQL语句，实现数据库事务。
        /// </summary>
        /// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的OracleParameter[]）</param>
        public static void ExecuteSqlTran(Hashtable SQLStringList)
        {
            using (OracleConnection conn = new OracleConnection(connectionString))
            {
                conn.Open();
                using (OracleTransaction trans = conn.BeginTransaction())
                {
                    OracleCommand cmd = new OracleCommand();
                    try
                    {
                        //循环
                        foreach (DictionaryEntry myDE in SQLStringList)
                        {
                            string cmdText = myDE.Key.ToString();
                            OracleParameter[] cmdParms = (OracleParameter[])myDE.Value;
                            PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
                            int val = cmd.ExecuteNonQuery();
                            cmd.Parameters.Clear();

                            trans.Commit();
                        }
                    }
                    catch
                    {
                        trans.Rollback();
                        throw;
                    }
                }
            }
        }


        /// <summary>
        /// 执行一条计算查询结果语句，返回查询结果（object）。
        /// </summary>
        /// <param name="SQLString">计算查询结果语句</param>
        /// <returns>查询结果（object）</returns>
        public static object GetSingle(string SQLString, params OracleParameter[] cmdParms)
        {
            using (OracleConnection connection = new OracleConnection(connectionString))
            {
                using (OracleCommand cmd = new OracleCommand())
                {
                    try
                    {
                        PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                        object obj = cmd.ExecuteScalar();
                        cmd.Parameters.Clear();
                        if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
                        {
                            return null;
                        }
                        else
                        {
                            return obj;
                        }
                    }
                    catch (System.Data.OracleClient.OracleException e)
                    {
                        throw new Exception(e.Message);
                    }
                }
            }
        }

        /// <summary>
        /// 执行查询语句，返回OracleDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close )
        /// </summary>
        /// <param name="strSQL">查询语句</param>
        /// <returns>OracleDataReader</returns>
        public static OracleDataReader ExecuteReader(string SQLString, params OracleParameter[] cmdParms)
        {
            OracleConnection connection = new OracleConnection(connectionString);
            OracleCommand cmd = new OracleCommand();
            try
            {
                PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                OracleDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                cmd.Parameters.Clear();
                return myReader;
            }
            catch (System.Data.OracleClient.OracleException e)
            {
                throw new Exception(e.Message);
            }

        }

        /// <summary>
        /// 执行查询语句，返回DataSet
        /// </summary>
        /// <param name="SQLString">查询语句</param>
        /// <returns>DataSet</returns>
        public static DataSet Query(string SQLString, params OracleParameter[] cmdParms)
        {
            using (OracleConnection connection = new OracleConnection(connectionString))
            {
                OracleCommand cmd = new OracleCommand();
                PrepareCommand(cmd, connection, null, SQLString, cmdParms);
                using (OracleDataAdapter da = new OracleDataAdapter(cmd))
                {
                    DataSet ds = new DataSet();
                    try
                    {
                        da.Fill(ds, "ds");
                        cmd.Parameters.Clear();
                    }
                    catch (System.Data.OracleClient.OracleException ex)
                    {
                        throw new Exception(ex.Message);
                    }
                    return ds;
                }
            }
        }








        private static void PrepareCommand(OracleCommand cmd, OracleConnection conn, OracleTransaction trans, string cmdText, OracleParameter[] cmdParms)
        {
            if (conn.State != ConnectionState.Open)
                conn.Open();
            cmd.Connection = conn;
            cmd.CommandText = cmdText;
            if (trans != null)
                cmd.Transaction = trans;
            cmd.CommandType = CommandType.Text;//cmdType;
            if (cmdParms != null)
            {
                foreach (OracleParameter parm in cmdParms)
                    cmd.Parameters.Add(parm);
            }
        }

        #endregion

        #region 存储过程操作

        /// <summary>
        /// 执行存储过程 返回SqlDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close )
        /// </summary>
        /// <param name="storedProcName">存储过程名</param>
        /// <param name="parameters">存储过程参数</param>
        /// <returns>OracleDataReader</returns>
        public static OracleDataReader RunProcedure(string storedProcName, IDataParameter[] parameters)
        {
            OracleConnection connection = new OracleConnection(connectionString);
            OracleDataReader returnReader;
            connection.Open();
            OracleCommand command = BuildQueryCommand(connection, storedProcName, parameters);
            command.CommandType = CommandType.StoredProcedure;
            returnReader = command.ExecuteReader();
            connection.Close();

            return returnReader;
        }


        /// <summary>
        /// 执行存储过程
        /// </summary>
        /// <param name="storedProcName">存储过程名</param>
        /// <param name="parameters">存储过程参数</param>
        /// <param name="tableName">DataSet结果中的表名</param>
        /// <returns>DataSet</returns>
        public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName)
        {
            using (OracleConnection connection = new OracleConnection(connectionString))
            {
                DataSet dataSet = new DataSet();
                connection.Open();
                OracleDataAdapter sqlDA = new OracleDataAdapter();
                sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
                sqlDA.Fill(dataSet, tableName);
                connection.Close();
                return dataSet;
            }
        }


        /// <summary>
        /// 构建 OracleCommand 对象(用来返回一个结果集，而不是一个整数值)
        /// </summary>
        /// <param name="connection">数据库连接</param>
        /// <param name="storedProcName">存储过程名</param>
        /// <param name="parameters">存储过程参数</param>
        /// <returns>OracleCommand</returns>
        private static OracleCommand BuildQueryCommand(OracleConnection connection, string storedProcName, IDataParameter[] parameters)
        {
            OracleCommand command = new OracleCommand(storedProcName, connection);
            command.CommandType = CommandType.StoredProcedure;
            foreach (OracleParameter parameter in parameters)
            {
                command.Parameters.Add(parameter);
            }
            return command;
        }

        /// <summary>
        /// 执行存储过程，返回影响的行数		
        /// </summary>
        /// <param name="storedProcName">存储过程名</param>
        /// <param name="parameters">存储过程参数</param>
        /// <param name="rowsAffected">影响的行数</param>
        /// <returns></returns>
        public static int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected)
        {
            using (OracleConnection connection = new OracleConnection(connectionString))
            {
                int result;
                connection.Open();
                OracleCommand command = BuildIntCommand(connection, storedProcName, parameters);
                rowsAffected = command.ExecuteNonQuery();
                result = (int)command.Parameters["ReturnValue"].Value;
                //Connection.Close();
                return result;
            }
        }

        /// <summary>
        /// 创建 OracleCommand 对象实例(用来返回一个整数值)	
        /// </summary>
        /// <param name="storedProcName">存储过程名</param>
        /// <param name="parameters">存储过程参数</param>
        /// <returns>OracleCommand 对象实例</returns>
        private static OracleCommand BuildIntCommand(OracleConnection connection, string storedProcName, IDataParameter[] parameters)
        {
            OracleCommand command = BuildQueryCommand(connection, storedProcName, parameters);
            command.Parameters.Add(new OracleParameter("ReturnValue",
                OracleType.Int32, 4, ParameterDirection.ReturnValue,
                false, 0, 0, string.Empty, DataRowVersion.Default, null));
            return command;
        }
        #endregion

    }
}