小编And*_*ryd的帖子

我们正在使用代码优先迁移构建应用程序.我们一直在使用Entity Framework 5.0.0 RC,我们更新了Entity Framework的NuGet包.数据库已与模型上下文同步.代码首次迁移已经好几个月了.

当我们修改模型,并尝试添加迁移,甚至查询迁移时,我们会收到System.InvalidOperationException,以便更改模型支持.

好吧,显然它有,我正在尝试添加迁移.

我们不确定该怎么做.如果删除更改,我可以成功运行Get-Migrations,并显示数据库已正确应用所有迁移.虽然ProductVersion列显示"5.0.0-rc.net45".

还有其他人遇到过这个问题吗？

我有一个新的ASP.NET Core 1 RC2应用程序.(Visual Studio,IIS Express).它在同一个数据库中具有身份验证和数据(至少目前为止):

services.AddDbContext<MyDbContext>(options =>
  options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
services.AddDbContext<ApplicationIdentityContext>(options =>
  options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

我可以看到Identity部分工作(如果我"注册",则在AspNetUsers表中创建一条记录).但是,任何通过MyDbContext获取数据的尝试都会引发错误

An exception of type 'System.IO.FileLoadException' occurred in mscorlib.dll and wasn't handled before a managed/native boundary

Additional information: Could not load file or assembly 'System.Security.Cryptography.Algorithms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

对于System.Security.Cryptography.AlgorithmsNuget,我可以选择4.1.0-rc2和4.0.0-beta.两者都抛出相同的错误

从其他一些地方我发现了安装建议System.Net.Security,Microsoft.NETCore.Platforms但它也无济于事

大家好,我在ASP.NET Core上的项目中遇到EFCore迁移的问题.一些技术信息:操作系统:macOS

dotnet --version 1.0.0-preview2-003148

这是我的project.json:

{
  "dependencies": {
    "Microsoft.NETCore.App": {
      "version": "1.0.1",
      "type": "platform"
    },
    "Microsoft.AspNetCore.Mvc": "1.0.1",
    "Microsoft.AspNetCore.Routing": "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.Configuration.CommandLine": "1.0.0",
    "Microsoft.Extensions.Logging": "1.1.0-preview1-final",
    "Microsoft.Extensions.Logging.Console": "1.1.0-preview1-final",
    "Microsoft.Extensions.Logging.Debug": "1.1.0-preview1-final",
    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
    "Microsoft.EntityFrameworkCore": "1.1.0-preview1-final",
    "Microsoft.Extensions.Logging.Abstractions": "1.1.0-preview1-final",
    "Npgsql.EntityFrameworkCore.PostgreSQL": "1.0.2",
    "Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview3-final",
    "Microsoft.EntityFrameworkCore.Design": {
      "type": "build",
      "version": "1.1.0-preview1-final"
    },
    "Npgsql.EntityFrameworkCore.PostgreSQL.Design": "1.0.2"
  },
  "tools": {
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final",
    "Microsoft.EntityFrameworkCore.Tools": {
      "version": "1.0.0-preview3-final",
      "imports": [
        "portable-net45+win8+dnxcore50",
        "portable-net45+win8"
      ]
    }
  },
  "frameworks": {
    "netcoreapp1.0": {
      "imports": [
        "dotnet5.6", …