三层登录实例（VB.NET版）

E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\LoginDemo.exe.config E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\LoginDemo.exe E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\LoginDemo.pdb E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\LoginDemo.xml E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\obj\Debug\LoginDemo.LoginUI.resources E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\obj\Debug\LoginDemo.Resources.resources E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\obj\Debug\UI.vbproj.GenerateResource.Cache E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\obj\Debug\LoginDemo.exe E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\obj\Debug\LoginDemo.xml E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\obj\Debug\LoginDemo.pdb E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\BLL.dll E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\Entity.dll E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\BLL.pdb E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\BLL.xml E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\Entity.pdb E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\Entity.xml E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\obj\Debug\UI.vbprojResolveAssemblyReference.cache E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\DAL.dll E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\DAL.pdb E:\学习\三层\用VB.NET语言模仿C Sharp\LoginDemo\bin\Debug\DAL.xml E:\学习\三层\LoginSuccess\LoginDemo\bin\Debug\LoginDemo.exe.config E:\学习\三层\LoginSuccess\LoginDemo\obj\Debug\LoginDemo.exe E:\学习\三层\LoginSuccess\LoginDemo\obj\Debug\LoginDemo.xml E:\学习\三层\LoginSuccess\LoginDemo\obj\Debug\LoginDemo.pdb