.Net Code 基础数据迁移与配置跨域

数据迁移

 

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1.添加引用:

 

 

 

2.创建上下文

public appDbContex(DbContextOptions<appDbContex> option) : base(option)
        {

        }

        public DbSet<Student> students { get; set; }
        public DbSet<ClassInfo> classInfos  { get; set; }

 

3.Startup中添加上下文:

services.AddDbContext<AppDbConetext>(option =>
            {
                option.UseSqlServer(Configuration.GetConnectionString("MSSQL"));
            });

4.appsettings 配置链接数据库:

  "ConnectionStrings": {
    "MSSQL": "Data Source=.;Initial Catalog=Work10.12;Integrated Security=True"

5.程序包管理器控制台:

add-migration v1

update-database

 

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跨域

 

services.AddCors(option =>
            {
                option.AddDefaultPolicy(p => {
                    p.AllowAnyOrigin().AllowAnyMethod().AllowAnyHeader();
                });
            });