エラー\t CS1061 \t 'DbContextOptionsBuilder'に 'UseMySql'の定義が含まれていません

Question

Visual Studio Community Editionを使用してASP.NET CORE 2.0 MVCを使用する方法を学ぶだけです。 古いMySQL DBの中にいくつかのデータを使用する必要があるため、SQL Serverを使用する代わりにMySQLデータベースを使用します。私はこの問題を解決する助けてください..ありがとうここ

は私のエラーです：Startup.cs（ https://pastebin.com/dzx8Hf8Q）

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Threading.Tasks; 
using Microsoft.AspNetCore.Builder; 
using Microsoft.AspNetCore.Hosting; 
using Microsoft.Extensions.Configuration; 
using Microsoft.Extensions.DependencyInjection; 
using Microsoft.EntityFrameworkCore; 
using LearnEFCore.Data; 

.... 
// This method gets called by the runtime. Use this method to add services to the container. 
     public void ConfigureServices(IServiceCollection services) 
     { 
      var sqlConnectionString = Configuration.GetConnectionString("DataAccessMySqlProvider"); 
      services.AddDbContext<SchoolContext>(options => options.UseMySql(sqlConnectionString)); 
      services.AddMvc(); 
     } 

で

で：次のように

Severity Code Description Project File Line Suppression State Error CS1061 'DbContextOptionsBuilder' does not contain a definition for 'UseMySql' and no extension method 'UseMySql' accepting a first argument of type 'DbContextOptionsBuilder' could be found (are you missing a using directive or an assembly reference?) LearnEFCore d:\temp\aspnet\LearnEFCore\LearnEFCore\Startup.cs 29 Active

私のコード私のappsettings.json

{ 
    "Logging": { 
    "IncludeScopes": false, 
    "LogLevel": { 
     "Default": "Warning" 
    } 
    }, 

    "ConnectionStrings": { 
    "DataAccessMySqlProvider": "server=localhost;port=3306;userid=root;password=root;database=sportstore;" 
    } 
} 

私のモデルで

/データ

using LearnEFCore.Models; 
using Microsoft.EntityFrameworkCore; 

namespace LearnEFCore.Data 
{ 
    public class SchoolContext : DbContext 
    { 
     public SchoolContext(DbContextOptions<SchoolContext> options) : base(options) 
     { 
     } 

     public DbSet<Course> Courses { get; set; } 
     public DbSet<Enrollment> Enrollments { get; set; } 
     public DbSet<Student> Students { get; set; } 

     protected override void OnModelCreating(ModelBuilder modelBuilder) 
     { 
      modelBuilder.Entity<Course>().ToTable("Course"); 
      modelBuilder.Entity<Enrollment>().ToTable("Enrollment"); 
      modelBuilder.Entity<Student>().ToTable("Student"); 
     } 
    } 
} 

マイcsproj Pomelo.EntityFrameworkCore.MySqlに変るが、問題を解決し

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

    <PropertyGroup> 
    <TargetFramework>netcoreapp2.0</TargetFramework> 
    </PropertyGroup> 

    <ItemGroup> 
    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.0" /> 
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="2.0.0" /> 
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="2.0.0" /> 
    <PackageReference Include="MySql.Data.EntityFrameworkCore" Version="6.10.4" /> 
    </ItemGroup> 

    <ItemGroup> 
    <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="2.0.0" /> 
    </ItemGroup> 

</Project> 

Answer 1

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