IDataParameter[] iDataDi = new SqlParameter[2];
            iDataDi[0] = new SqlParameter("@AnalysisDate", showDate);
            iDataDi[1] = new SqlParameter("@Process_PTR", ID);
            //获取检测项所选日期的不同时间
            dtDifferTime = SqlHelper.RunProceduresByParameter("pro_GetDifferenceTimeInfos", iDataDi);
　　　　　　      //SqlHelper中的 RunProceduresByParameter(string storedProcName, IDataParameter[] parameters)方法：
　　 /// <summary>
    /// 执行带参数的存储过程，返回DataSet类型
    /// </summary>
    /// <param name="storedProcName"></param>
    /// <param name="parameters"></param>
    /// <returns></returns>
    public static DataSet RunProceduresByParameter(string storedProcName, IDataParameter[] parameters)
    {
      using (SqlConnection connection = new SqlConnection(connectionString))
      {
        DataSet dataSet = new DataSet();
        connection.Open();
        SqlDataAdapter sqlDA = new SqlDataAdapter();
        sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters);
        sqlDA.Fill(dataSet);
        connection.Close();
        connection.Dispose();
        return dataSet;
      }
    }
　　 /// <summary> 
    /// 构建 SqlCommand 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>SqlCommand</returns> 
    private static SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters)
    {
      SqlCommand command = new SqlCommand(storedProcName, connection);
      command.CommandType = CommandType.StoredProcedure;
      foreach (SqlParameter parameter in parameters)
      {
        command.Parameters.Add(parameter);
      }
      return command;
    }

USE [RedBSys_DB]
GO
/****** Object: StoredProcedure [dbo].[pro_GetDifferenceTimeInfos]  Script Date: 2017-03-22 16:34:13 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
 --获取检测项当天日期不同时间
CREATE proc [dbo].[pro_GetDifferenceTimeInfos]
  @AnalysisDate varchar(50),
  @Process_PTR int
AS
 select distinct(AnalysisDate) from Assay_BillMain
 where CONVERT(varchar(100),AnalysisDate, 23)=@AnalysisDate and Process_PTR=@Process_PTR 
 order by AnalysisDate ASC
GO