Question

这是我的第一个 asp.net mvc 项目。我使用了 EF代码方法并创建了一个单独的类库来编写我的模型和上下文。我还在mvc项目中引用了类库。但是，当我尝试启用迁移时，在创建了更多新模型之后，它给了我一个错误。我还尝试了这里提到的所有可能的解决方案：No context type found in the assembly. ASP.NET MVC4

仍然存在问题。我错过了什么吗？

这是Context Class的代码：

＆＃13;

using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.Entity.ModelConfiguration.Conventions;
using FYPPharmAssistant.Domain.Models;


namespace FYPPharmAssistant.Domain.DAL
{
    public class MyContext : DbContext
    {
        public MyContext()
            : base("MyConnectionString")
        {

        }
        public DbSet<GenericName> GenericNames { get; set; }
        public DbSet<Item> Items { get; set; }
        public DbSet<Manufacturer> Manufacturers { get; set; }
        public DbSet<Stock> Stocks { get; set; }
        public DbSet<PaymentStatus> PaymentStatus { get; set; }
        public DbSet<Purchase> Purchase { get; set; }
        public DbSet<PurchaseItem> PurchaseItems { get; set; }
        public DbSet<Supplier> Suppliers { get; set; }

        //avoids pluralizing table names
        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
        }
    }
}

＆＃13;

我的 web.config ：

＆＃13;

<?xml version="1.0" encoding="utf-8"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=301880
  -->
<configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <connectionStrings>
    <add name="MyConnectionString" connectionString="Data Source=AVISHEKH\SQLEXPRESS; Initial Catalog= FYPPharmAssistant; Integrated Security=SSPI;" providerName="System.Data.SqlClient"/>
  </connectionStrings>
  <appSettings>
    <add key="webpages:Version" value="3.0.0.0" />
    <add key="webpages:Enabled" value="false" />
    <add key="ClientValidationEnabled" value="true" />
    <add key="UnobtrusiveJavaScriptEnabled" value="true" />
  </appSettings>
  <system.web>
    <compilation debug="true" targetFramework="4.5" />
    <httpRuntime targetFramework="4.5" />
  </system.web>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security.OAuth" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security.Cookies" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Owin.Security" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" culture="neutral" publicKeyToken="30ad4fe6b2a6aeed" />
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Optimization" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="1.1.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-1.5.2.14234" newVersion="1.5.2.14234" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-5.2.2.0" newVersion="5.2.2.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
  <entityFramework>
    <!--
    <contexts>
      <context type="FYPPharmAssistant.Domain.DAL.MyContext, FYPPharmAssistant">
        <databaseInitializer type="FYPPharmAssistant.Domain.DAL.PharmacyInitializer, FYPPharmAssistant" />
      </context>
    </contexts> -->
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>
</configuration>

＆＃13;

Answer 1

这可能对将来有所帮助。所以我再写一遍。

我只是将默认项目更改为FYPPharmacyAssistant.Domain 从PackageManager控制台的下拉列表和问题解决了。 FYPPharmacyAssistant.Domain是我的单独项目或类库由我的所有实体和数据库上下文组成类。

Answer 2

上下文需要与迁移配置位于同一个项目中

ASP.NET MVC：在程序集中找不到上下文类型

2 个答案: