BusinessLogicLayer/DepartmentBLL.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using CheckOnWork.BusinessLogicLayer;
using CheckOnWork.Model;
using CheckOnWork.WebConfig;
using CheckOnWork.IDAL;

namespace CheckOnWork.BusinessLogicLayer
{
    public class DepartmentBLL
    {
        private static IDepartment dal = DALFactory.DataAccess.CreateDepartment();

        /// <summary>
        /// 根据系别编号得到名称
        /// </summary>
        /// <param name="id">系别编号</param>
        /// <returns></returns>
        public string GetDepartmentNameById(int id)
        {
            string name=dal.GetDepartmentNameById(id);
            if (string.IsNullOrEmpty(name))
                return "没有此系别！";
            else return name;
        }
        /// <summary>
        /// 根据系别的名称得到编号
        /// </summary>
        /// <param name="departmentName"></param>
        /// <returns></returns>
        public int GetDepartmentIdByName(string departmentName)
        {
            int id=dal.GetDepartmentIdByName(departmentName);
            if (id ==0)
            {
                return -1;
            }
            else return id;
        }
         /// <summary>
         /// 得到所有的系别信息
         /// </summary>
         /// <returns></returns>
        public IList<Department> GetAllDepartment()
        {
            return dal.GetAllDepartment();
        }
    }
}