EF Core：Update-Database命令不创建用户表

时间：2017-09-12 04:40:31

标签： c# asp.net-core entity-framework-core

关注this tutorial我在ASP.NET Core 1.1.1 - Code first上创建了VS2017 ver 15.3.3个应用。本教程和我的应用程序之间的唯一区别是我选择Individual User Accounts选项，而我使用的是SQL Server 2012 EXPRESS Db而不是LocalDb。以下命令运行正常，并使用Blogs和Posts表创建Blogging数据库。注意：我还没有在两台计算机上升级到.NET Core 2.0，以解决与某些现有应用程序的兼容性问题。

PM> Add-Migration myFirstMigration -context BloggingContext
PM> Update-Database -context BloggingContext

问题

但是当我运行以下命令来生成用户表（ASPNETUsers，ASPNETRols等）时，该命令运行时没有任何错误，但是没有创建用户表。在将VS2017升级到版本15.3.3之前，这种情况并未发生。此外，在我的另一台计算机（Windows 10与SQLEXPRESS 2014）上我没有这样的问题。这台计算机是Windows 7.这可能是什么问题 - 我可能在这里缺少什么？

Update-Database -context BloggingContext

.csproj文件 

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp1.1</TargetFramework>
    <PackageTargetFallback>$(PackageTargetFallback);portable-net45+win8+wp8+wpa81;</PackageTargetFallback>
    <UserSecretsId>aspnet-ForgotPassword-B181AA40-BA34-4A36-A650-38857D8E8177</UserSecretsId>
  </PropertyGroup>


  <ItemGroup>
    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.0.0" />
    <PackageReference Include="Microsoft.AspNetCore" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.3" />
    <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.2" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="1.1.2" PrivateAssets="All" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="1.1.2" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer.Design" Version="1.1.2" PrivateAssets="All" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="1.1.1" PrivateAssets="All" />
    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="1.1.2" />
    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="1.1.2" />
    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="1.1.1" PrivateAssets="All" />
    <PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="1.1.2" />
  </ItemGroup>

  <ItemGroup>
    <DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="1.0.1" />
    <DotNetCliToolReference Include="Microsoft.Extensions.SecretManager.Tools" Version="1.0.1" />
    <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="1.0.1" />
  </ItemGroup>

</Project>

ApplicationDbContextModelShapshot.cs 

[DbContext(typeof(ApplicationDbContext))]
partial class ApplicationDbContextModelSnapshot : ModelSnapshot
{
    protected override void BuildModel(ModelBuilder modelBuilder)
    {
        modelBuilder
            .HasAnnotation("ProductVersion", "1.0.0-rc3")
            .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);

        modelBuilder.Entity("Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityRole", b =>
            {
                b.Property<string>("Id");

                b.Property<string>("ConcurrencyStamp")
                    .IsConcurrencyToken();

                b.Property<string>("Name")
                    .HasAnnotation("MaxLength", 256);

                b.Property<string>("NormalizedName")
                    .HasAnnotation("MaxLength", 256);

                b.HasKey("Id");

                b.HasIndex("NormalizedName")
                    .HasName("RoleNameIndex");

                b.ToTable("AspNetRoles");
            });

        modelBuilder.Entity("Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityRoleClaim<string>", b =>
            {
                b.Property<int>("Id")
                    .ValueGeneratedOnAdd();

                b.Property<string>("ClaimType");

                b.Property<string>("ClaimValue");

                b.Property<string>("RoleId")
                    .IsRequired();

                b.HasKey("Id");

                b.HasIndex("RoleId");

                b.ToTable("AspNetRoleClaims");
            });

        modelBuilder.Entity("Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityUserClaim<string>", b =>
            {
                b.Property<int>("Id")
                    .ValueGeneratedOnAdd();

                b.Property<string>("ClaimType");

                b.Property<string>("ClaimValue");

                b.Property<string>("UserId")
                    .IsRequired();

                b.HasKey("Id");

                b.HasIndex("UserId");

                b.ToTable("AspNetUserClaims");
            });

        modelBuilder.Entity("Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityUserLogin<string>", b =>
            {
                b.Property<string>("LoginProvider");

                b.Property<string>("ProviderKey");

                b.Property<string>("ProviderDisplayName");

                b.Property<string>("UserId")
                    .IsRequired();

                b.HasKey("LoginProvider", "ProviderKey");

                b.HasIndex("UserId");

                b.ToTable("AspNetUserLogins");
            });

        modelBuilder.Entity("Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityUserRole<string>", b =>
            {
                b.Property<string>("UserId");

                b.Property<string>("RoleId");

                b.HasKey("UserId", "RoleId");

                b.HasIndex("RoleId");

                b.HasIndex("UserId");

                b.ToTable("AspNetUserRoles");
            });

        modelBuilder.Entity("Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityUserToken<string>", b =>
            {
                b.Property<string>("UserId");

                b.Property<string>("LoginProvider");

                b.Property<string>("Name");

                b.Property<string>("Value");

                b.HasKey("UserId", "LoginProvider", "Name");

                b.ToTable("AspNetUserTokens");
            });

        modelBuilder.Entity("ForgotPassword.Models.ApplicationUser", b =>
            {
                b.Property<string>("Id");

                b.Property<int>("AccessFailedCount");

                b.Property<string>("ConcurrencyStamp")
                    .IsConcurrencyToken();

                b.Property<string>("Email")
                    .HasAnnotation("MaxLength", 256);

                b.Property<bool>("EmailConfirmed");

                b.Property<bool>("LockoutEnabled");

                b.Property<DateTimeOffset?>("LockoutEnd");

                b.Property<string>("NormalizedEmail")
                    .HasAnnotation("MaxLength", 256);

                b.Property<string>("NormalizedUserName")
                    .HasAnnotation("MaxLength", 256);

                b.Property<string>("PasswordHash");

                b.Property<string>("PhoneNumber");

                b.Property<bool>("PhoneNumberConfirmed");

                b.Property<string>("SecurityStamp");

                b.Property<bool>("TwoFactorEnabled");

                b.Property<string>("UserName")
                    .HasAnnotation("MaxLength", 256);

                b.HasKey("Id");

                b.HasIndex("NormalizedEmail")
                    .HasName("EmailIndex");

                b.HasIndex("NormalizedUserName")
                    .IsUnique()
                    .HasName("UserNameIndex");

                b.ToTable("AspNetUsers");
            });

        modelBuilder.Entity("Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityRoleClaim<string>", b =>
            {
                b.HasOne("Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityRole")
                    .WithMany("Claims")
                    .HasForeignKey("RoleId")
                    .OnDelete(DeleteBehavior.Cascade);
            });

        modelBuilder.Entity("Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityUserClaim<string>", b =>
            {
                b.HasOne("ForgotPassword.Models.ApplicationUser")
                    .WithMany("Claims")
                    .HasForeignKey("UserId")
                    .OnDelete(DeleteBehavior.Cascade);
            });

        modelBuilder.Entity("Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityUserLogin<string>", b =>
            {
                b.HasOne("ForgotPassword.Models.ApplicationUser")
                    .WithMany("Logins")
                    .HasForeignKey("UserId")
                    .OnDelete(DeleteBehavior.Cascade);
            });

        modelBuilder.Entity("Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityUserRole<string>", b =>
            {
                b.HasOne("Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityRole")
                    .WithMany("Users")
                    .HasForeignKey("RoleId")
                    .OnDelete(DeleteBehavior.Cascade);

                b.HasOne("ForgotPassword.Models.ApplicationUser")
                    .WithMany("Roles")
                    .HasForeignKey("UserId")
                    .OnDelete(DeleteBehavior.Cascade);
            });
    }
}

更新

我尝试了上面的测试，选择了另一台具有.NET Core 2.0和VS2017 ver 15.3.3的计算机上的ASP.NET Core 2.0模板，并且所有内容都按预期工作正常 - 使用相同的SQL Server版本SQLEXPRESS2012。博客Db是使用博客和帖子表以及用户表ASPNETUsers，ASPNETRoles等创建的。所以问题似乎是你的系统上有VS2017 ver 15.3.3的.NET Core 1.1.1并且你正试图创建一个ASP.NET带有Individual User Accounts然后ApplicationDbContext的核心1.1.1网络应用无效。

2 个答案:

答案 0 :(得分：1)

当运行命令添加迁移和更新数据库时，您正在引用BloggingContext，并且您正在向我们显示ApplicationDbContext的快照。 ApplicationDbContext附带您选择的个人用户帐户模板，因此如果您需要身份表（用户表就是其中之一），您应该扩展ApplicationDbContext而不是创建新的。

答案 1 :(得分：0)

使用Microsoft.AspNetCore.All 2.0.5，使用Visual Studio 2017解决方案最终很容易解决。我没有收到任何错误消息，我只需要在appsettings.json中更改此消息。我不得不将“Server=(localdb)\\mssqllocaldb;”更改为：“Server=Localhost;。”然后我运行了命令“Update-Database”并创建了表格。

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