在vs里面安装ODP.NET连接oracle数据库，及代码如何使用

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本文介绍如何在Visual Studio中通过安装ODP.NET包连接Oracle数据库，并提供了一个具体的示例，展示如何批量保存数据到Oracle数据库，包括连接设置、SQL命令执行及事务处理。

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//在vs里面安装ODP.NET连接oracle数据库

在程序包管理器控制台里面输入命令：

Install-Package Oracle.ManagedDataAccess

相关网址：

https://www.nuget.org/packages/Oracle.ManagedDataAccess/12.1.24160719

http://www.oracle.com/technetwork/cn/indexes/downloads/index.html#middleware

后台操作oracle语法：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data;
using Oracle.ManagedDataAccess.Client;
using Oracle.ManagedDataAccess.Types;

namespace DataDAL
{
    public class TrainDAL
    {
        /// <summary>
        /// 事务，批量保存火车过衡数据列表，返回插入的数据行数
        /// </summary>
        /// <param name="list"></param>
        /// <returns></returns>
        public int AddList(List<CoalByTrain> list)
        {
            int count = 0;
            OracleConnection connection = null;
            OracleTransaction tran = null;
            try
            {
                string conn = System.Configuration.ConfigurationManager.ConnectionStrings["conn"].ConnectionString;
                connection = new OracleConnection(conn);
                connection.Open();
                tran = connection.BeginTransaction();
                foreach (var item in list)
                {
                    string sql = "insert into COALBYTRAIN(coalbytrainid,measuretime,vehicleno,billweight,GROSSWEIGHT,TARE,TRAINTYPE,SEQUENCENO)"
                         + " values(COALBYTRAIN_SEQ.NEXTVAL,to_date(:GuoHengTime,'yyyy-mm-dd hh24:mi:ss'),:vehicleno,:billweight,:GROSSWEIGHT,:TARE,:TRAINTYPE,:SEQUENCENO)";
                    OracleCommand cmd = new OracleCommand(sql, connection);                   
                    cmd.Parameters.Add(new OracleParameter(":GuoHengTime", item.GuoHengTime));
                    cmd.Parameters.Add(new OracleParameter(":vehicleno", item.TrainNo));
                    cmd.Parameters.Add(new OracleParameter(":billweight", item.BiaoWeight));
                    cmd.Parameters.Add(new OracleParameter(":GROSSWEIGHT", item.GrossWeight));
                    cmd.Parameters.Add(new OracleParameter(":TARE", item.Tare));
                    cmd.Parameters.Add(new OracleParameter(":TRAINTYPE", item.TrainType));
                    cmd.Parameters.Add(new OracleParameter(":SEQUENCENO", item.SeqNo));

                    cmd.Transaction = tran;
                    count += cmd.ExecuteNonQuery();                   
                }
                tran.Commit();
            }
            catch (Exception ex)
            {
                count = 0;
                if (tran != null)
                {
                    tran.Rollback();
                }
                string msg = ex.Message;
            }
            finally
            {
                if (tran != null)
                {
                    tran.Dispose();
                }
                if (connection != null)
                {
                    connection.Close();
                    connection.Dispose();
                }
            }
            return count;
        }

    }
}