VS2017添加EF的MVC控制器报错解决方法

VS2017添加EF的MVC控制器报错的解决方法，供大家参考，具体内容如下

1. 错误描述：no database provider has been configured fot this DbContext.

此类错误是上下文的注册造成的.解决方式在DBContext中重写OnConfiguring方法去注入数据库连接.

DbContext中:

publicstaticstringConnectionString {get;set; }

protectedoverridevoidOnConfiguring(DbContextOptionsBuilder optionsBuilder)

{

 optionsBuilder.UseSqlServer(ConnectionString);

 base.OnConfiguring(optionsBuilder);

}

在Startup.cs中

publicvoidConfigureServices(IServiceCollection services)

 {

  // Add framework services.

  var sqlserverConnection = Configuration.GetConnectionString("SQLServerConnection");

  DbContext.ConnectionString = sqlserverConnection;//将配置连接传入DbContext中

  services.AddDbContext(options => options.UseSqlServer(sqlserverConnection));

  services.AddMvc();

}

2.错误描述：Could not add Model type XXX to DbContext

错误描述没有注册DbSet属性.但实际上是有 public DbSetXXX{ get; set; }注册的.将DbSet中的类改成<命名空间+类名>这种完整声明即可解决