Question

我试图首先使用asp.net core api代码。执行public class DataBaseContext: DbContext, IDbContext { public DataBaseContext(DbContextOptions<DbContext> options) : base(options) { } public DbSet<Location> Locations { get; set; } public DbSet<Product> Products { get; set; } public DbSet<Category> Categories { get; set; } public DbSet<Event> Events { get; set; } public DbSet<ExistingProduct> ExisitingProducts { get; set; } }时出现错误

public void ConfigureServices(IServiceCollection services) { //Add framework services. var connection = @"Server=(LocalDb)\\v11.0;Database=Home;Trusted_Connection=True;MultipleActiveResultSets=true"; services.AddDbContext<DataBaseContext>(options => options.UseSqlServer(connection)); services.AddMvc(); }

我的DatabaseContext类看起来像

"tools": {
    "Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview2-final",
    "Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview2-final",
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final"
  },

ConfigService like

"dependencies": {
    "Microsoft.NETCore.App": "1.0.1",
    "Microsoft.AspNetCore.Mvc": "1.0.1",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.1",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.Extensions.Configuration.FileExtensions": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.Logging": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.Extensions.Logging.Debug": "1.0.0",
    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
    "Microsoft.EntityFrameworkCore.SqlServer": "1.0.1",
    "Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview2-final",
    "Microsoft.EntityFrameworkCore": "1.0.1",
    "DAL": "1.0.0-*",
    "BLL": "1.0.0-*"
  },

在project.json工具中有

fiber.run();

仔细阅读这篇文章https://docs.efproject.net/en/latest/platforms/aspnetcore/new-db.html以及其他几个不同的文章，但尚无法解决这个问题。也许有人可以帮助或指出我做错了什么？

编辑部分：

Fiber.yield();

Answer 1

DbContextOptions参数应为DbContextOptions<DataBaseContext>而不是DbContextOptions<DbContext>。

更改DataBaseContext类的构造函数。

public DataBaseContext(DbContextOptions<DataBaseContext> options) : base(options)
{
}

数据库设置中的asp.net-core迁移错误

1 个答案: