c#图书馆管理系统源码（三层架构 含数据库脚本）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Model;
using DAL;
using System.Data;

namespace BLL
{
    public class Admin_BLL
    {
        Admin_DAL aa = new Admin_DAL（）;

        //删除管理员
        public int deleteAdmin（String LoginId）
        {
            return aa.deleteAdmin（LoginId）;
        }
        //修改管理员
        public int ExitAdmin（Admin a）
        {
            return aa.ExitAdmin（a）;
        }
        //添加管理员
        public int AddAdmin（Admin a）
        {
            return aa.AddAdmin（a）;
        }
        public DataSet selectAdmin（）
        {
            return aa.selectAdmin（）;
        }


        public int Scalar（Admin a）
        {
            return aa.Scal

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2016-09-10 16:10  C#library\
     目录           0  2016-09-03 10:40  C#library\IFDemo\
     目录           0  2016-09-06 16:17  C#library\IFDemo\BLL\
     文件         862  2016-09-03 19:13  C#library\IFDemo\BLL\Admin_BLL.cs
     目录           0  2016-09-03 10:40  C#library\IFDemo\BLL\bin\
     目录           0  2016-09-07 19:26  C#library\IFDemo\BLL\bin\Debug\
     文件        9216  2016-09-07 19:26  C#library\IFDemo\BLL\bin\Debug\BLL.dll
     文件       42496  2016-09-07 19:26  C#library\IFDemo\BLL\bin\Debug\BLL.pdb
     文件        7168  2016-09-07 19:26  C#library\IFDemo\BLL\bin\Debug\Common.dll
     文件       13824  2016-09-07 19:26  C#library\IFDemo\BLL\bin\Debug\Common.pdb
     文件       41984  2016-09-07 19:26  C#library\IFDemo\BLL\bin\Debug\DAL.dll
     文件       52736  2016-09-07 19:26  C#library\IFDemo\BLL\bin\Debug\DAL.pdb
     文件       13312  2016-09-07 19:26  C#library\IFDemo\BLL\bin\Debug\Model.dll
     文件       17920  2016-09-07 19:26  C#library\IFDemo\BLL\bin\Debug\Model.pdb
     目录           0  2016-09-03 10:40  C#library\IFDemo\BLL\bin\Release\
     文件        3246  2016-09-06 22:24  C#library\IFDemo\BLL\BLL.csproj
     文件        2538  2016-09-05 11:07  C#library\IFDemo\BLL\BookInfo_BLL.cs
     文件         990  2016-09-05 10:49  C#library\IFDemo\BLL\BookType_BLL.cs
     文件        1760  2016-09-05 10:53  C#library\IFDemo\BLL\BorrowReturn_BLL.cs
     文件         886  2016-09-06 16:17  C#library\IFDemo\BLL\Class_BLL.cs
     文件        1006  2016-09-06 16:13  C#library\IFDemo\BLL\Department_BLL.cs
     目录           0  2016-09-03 10:39  C#library\IFDemo\BLL\obj\
     目录           0  2016-09-07 19:26  C#library\IFDemo\BLL\obj\Debug\
     文件        1000  2016-09-07 19:26  C#library\IFDemo\BLL\obj\Debug\BLL.csproj.FileListAbsolute.txt
     文件       11917  2016-09-07 19:26  C#library\IFDemo\BLL\obj\Debug\BLL.csprojResolveAssemblyReference.cache
     文件        9216  2016-09-07 19:26  C#library\IFDemo\BLL\obj\Debug\BLL.dll
     文件       42496  2016-09-07 19:26  C#library\IFDemo\BLL\obj\Debug\BLL.pdb
     文件        6842  2016-09-06 16:09  C#library\IFDemo\BLL\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache
     文件           0  2016-09-03 10:39  C#library\IFDemo\BLL\obj\Debug\TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs
     文件           0  2016-09-03 10:39  C#library\IFDemo\BLL\obj\Debug\TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs
     文件           0  2016-09-03 10:39  C#library\IFDemo\BLL\obj\Debug\TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs
............此处省略187个文件信息