编程笔记提要

bootstrap之navbar ： https://www.cnblogs.com/jipinglong/p/9032640.html

在页面上可以用@Styles.Render("~/Content/css") 来加载css,首先要在App_Start 里面BundleConfig.cs 文件里面添加要包含的css文件

cshtml文件：*.c文件只要传递一个Dictionary，而在cshtml文件不要@ using模型

@foreach (string key in Model.Keys)
{
<tr>
<th>@key</th>
<td>@Model[key]</td>
</tr>
}

ASP.NET Identity

Web.config中:
<add key="owin:AppStartup" value="UsersManagement.IdentityConfig" /> IdentityConfig的名空间
数据库连接字符串

创建 User 类
创建 Database Context 类
创建User Manger 类
创建OWIN Startup 类IdentityConfig
添加验证：
CustomPasswordValidator
CustomUserValidator

用户adddelete

使用Katana进行身份验证UseCookieAuthentication

添加用户并实现身份验证Login(LoginModel model,string returnUrl)

未登录请求重定向

app.UseCookieAuthentication(new CookieAuthenticationOptions()
{
　　AuthenticationScheme = "MyCookieMiddlewareInstance",
　　LoginPath = new PathString("/Account/Login/"),
　　AccessDeniedPath = new PathString("/Account/Forbidden/"),
　　AutomaticAuthenticate = true,
　　AutomaticChallenge = true
});

Code First 数据库建立及初始化：

namespace EFTest.DAL
{
    public class SchoolContext : DbContext
    {
        public SchoolContext() : base("SchoolContext")  //数据库连接
        {
        }
        public DbSet<Student> Students { get; set; }     //DbSet<T>定义数据库模型
        public DbSet<Enrollment> Enrollments { get; set; }
        public DbSet<Course> Courses { get; set; }

        protected override void OnModelCreating(DbModelBuilder modelBuilder) //用来改变一些约束，例如表名不用变复数、改表名、列名等等
        {
            modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
        }
    }
}

SchoolInitializer类用来定义数据库在初始化的时候需要做的一些事情；比如通过重载Seed方法预先放入一些数据等

using System;
using System.Collections.Generic;
using EFTest.Models;

namespace EFTest.DAL
{
    public class SchoolInitializer : System.Data.Entity.DropCreateDatabaseIfModelChanges<SchoolContext>
    {
        protected override void Seed(SchoolContext context)
        {
            var students = new List<Student>
            {
            new Student{FirstMidName="Carson",LastName="Alexander",EnrollmentDate=DateTime.Parse("2005-09-01")},
            new Student{FirstMidName="Meredith",LastName="Alonso",EnrollmentDate=DateTime.Parse("2002-09-01")},
            new Student{FirstMidName="Arturo",LastName="Anand",EnrollmentDate=DateTime.Parse("2003-09-01")},
            new Student{FirstMidName="Gytis",LastName="Barzdukas",EnrollmentDate=DateTime.Parse("2002-09-01")},
            new Student{FirstMidName="Yan",LastName="Li",EnrollmentDate=DateTime.Parse("2002-09-01")},
            new Student{FirstMidName="Peggy",LastName="Justice",EnrollmentDate=DateTime.Parse("2001-09-01")},
            new Student{FirstMidName="Laura",LastName="Norman",EnrollmentDate=DateTime.Parse("2003-09-01")},
            new Student{FirstMidName="Nino",LastName="Olivetto",EnrollmentDate=DateTime.Parse("2005-09-01")}
            };

            students.ForEach(s => context.Students.Add(s));
            context.SaveChanges();

            var courses = new List<Course>
            {
            new Course{CourseID=1050,Title="Chemistry",Credits=3,},
            new Course{CourseID=4022,Title="Microeconomics",Credits=3,},
            new Course{CourseID=4041,Title="Macroeconomics",Credits=3,},
            new Course{CourseID=1045,Title="Calculus",Credits=4,},
            new Course{CourseID=3141,Title="Trigonometry",Credits=4,},
            new Course{CourseID=2021,Title="Composition",Credits=3,},
            new Course{CourseID=2042,Title="Literature",Credits=4,}
            };
            courses.ForEach(s => context.Courses.Add(s));
            context.SaveChanges();

            var enrollments = new List<Enrollment>
            {
            new Enrollment{StudentID=1,CourseID=1050,Grade=Grade.A},
            new Enrollment{StudentID=1,CourseID=4022,Grade=Grade.C},
            new Enrollment{StudentID=1,CourseID=4041,Grade=Grade.B},
            new Enrollment{StudentID=2,CourseID=1045,Grade=Grade.B},
            new Enrollment{StudentID=2,CourseID=3141,Grade=Grade.F},
            new Enrollment{StudentID=2,CourseID=2021,Grade=Grade.F},
            new Enrollment{StudentID=3,CourseID=1050},
            new Enrollment{StudentID=4,CourseID=1050,},
            new Enrollment{StudentID=4,CourseID=4022,Grade=Grade.F},
            new Enrollment{StudentID=5,CourseID=4041,Grade=Grade.C},
            new Enrollment{StudentID=6,CourseID=1045},
            new Enrollment{StudentID=7,CourseID=3141,Grade=Grade.A},
            };
            enrollments.ForEach(s => context.Enrollments.Add(s));
            context.SaveChanges();
        }
    }
}

初始化数据库方法1：

1、在Web.config 中定义：

在<entityFramework>节点中，增加<contexts>节点，分别定义<context>的type ，以及初始化<databaseInitializer>的type: (具体为啥这样定义，只能以后看原理。。。)

<entityFramework>
    <contexts>
      <context type="EFTest.DAL.SchoolContext, EFTest">
        <databaseInitializer type="EFTest.DAL.SchoolInitializer, EFTest" />
      </context>
    </contexts>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="mssqllocaldb" />
      </parameters>
    </defaultConnectionFactory>
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>

这种方法只有在操作数据库读写时才会建立，例如加一个访问代码

using EFTest.DAL;
using System.Linq;
using System.Web.Mvc;

namespace EFTest.Controllers
{
    public class StudentController : Controller
    {
        private SchoolContext db = new SchoolContext();
// GET: Student
        public ActionResult Index()
        {
            return View(db.Students.ToList());
        }
    }
}

初始化数据库方法2：

2、在Global.asax中执行初始化；在Application_Start()方法中，最后加上以下数据库初始化代码：

Database.SetInitializer<SchoolContext>(new SchoolInitializer());

另外有：

    public class EFDbContext : DbContext
    {
        public DbSet<User> Users { get; set; }
        public DbSet<Role> Roles { get; set; }
        public DbSet<UserRoleRelation> UserRoleRelations { get; set; }
        public DbSet<UserConfig> UserConfig { get; set; }
        public EFDbContext()
            : base("DefaultConnection")
        {
            Database.CreateIfNotExists();// 如果数据库不存在则创建
        }
    }