punishmentmanager.cs

来自「c#开发宝典 光盘内容。本光盘主要为书中的源程序」· CS 代码 · 共 56 行

using System;
using System.Data.OleDb;
using StudentsMIS.DataAccess;

namespace StudentsMIS.Business
{
	/// <summary>
	/// PunishmentManager实现了对punishments表的选、增、删、改。
	/// </summary>
	public class PunishmentManager
	{
		public PunishmentManager()
		{
			
		}

    public IEntity Select(string id)
    {
      return new PunishmentEntity();
    }

    public int Insert(IEntity obj)
    {
      PunishmentEntity entity = (PunishmentEntity)obj;
      OleDbCommand objCommand = CommandBuilder.BuildOleDbCommand("Insert Into punishments(punishment_studentID,punishment_typeID,punishment_reason,punishment_date) Values(@PunishmentStudentID,@PunishmentTypeID,@PunishmentReason,@PunishmentDate)");
      objCommand.Parameters.Add("@PunishmentStudentID",entity.PunishmentStudentID);
      objCommand.Parameters.Add("@PunishmentTypeID",entity.PunishmentType);
      objCommand.Parameters.Add("@PunishmentReason",entity.PunishmentReason);
      objCommand.Parameters.Add("@PunishmentDate",entity.PunishmentDate);
      objCommand.ExecuteNonQuery();
      CommandCloser.CloseOleDbCommand(objCommand);
      return 0;
    }

    public void Delete(string id)
    {
      OleDbCommand objCommand = CommandBuilder.BuildOleDbCommand("Delete From punishments Where punishment_ID=@PunishmentID");
      objCommand.Parameters.Add("@PunishmentID",id);
      objCommand.ExecuteNonQuery();
      CommandCloser.CloseOleDbCommand(objCommand);
    }

    public int Update(IEntity obj)
    {
      PunishmentEntity entity = (PunishmentEntity)obj;
      OleDbCommand objCommand = CommandBuilder.BuildOleDbCommand("Update punishments Set punishment_typeID=@PunishmentTypeID,punishment_reason=@PunishmentReason Where punishment_ID=@PunishmentID");
      objCommand.Parameters.Add("@PunishmentTypeID",entity.PunishmentType);
      objCommand.Parameters.Add("@PunishmentReason",entity.PunishmentReason);
      objCommand.Parameters.Add("@PunishmentID",entity.PunishmentID);
      objCommand.ExecuteNonQuery();
      CommandCloser.CloseOleDbCommand(objCommand);
      return 0;
    }
	}
}