Sdk: dotnet build Not recognized overload | dotnet build 无法正确识别重载

[zhangyiqiu]

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vs2019能正常识别到重载，但是dotnet cli没有识别到重载

Vs2019 can recognize overloads normally, but dotnet cli does not recognize overloads.

Steps to reproduce

*
如下命令在powershell执行
The following command is executed in powershell
*

dotnet new console -n OvloadBuildFail
cd .\OvloadBuildFail\
dotnet add package Microsoft.EntityFrameworkCore
dotnet add package Microsoft.EntityFrameworkCore.Sqlite

*
将以下内容替换到Program.cs中
Replace the following into program.cs
*

using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;

namespace OvloadBuildFail
{
    class Program
    {
        static void Main(string[] args)
        {
            var repo = new TestRepostory<Student>(new MyDBConext());
            System.IO.File.Delete("TestDB.db");
            repo.DbContext.Database.EnsureCreated();
            var all = repo.DbSet.ToList();
            repo.Remove(all);
            var id1 = Guid.NewGuid();
            repo.Add(new Student
            {
                Id = id1,
                Name = "xiaoming",
                RreportCard = new RreportCard() { Id = Guid.NewGuid(), Name = "Mathematics", Score = 60, StudentId = id1 },

            });
            var id2 = Guid.NewGuid();
            repo.Add(new Student
            {
                Id = id2,
                Name = "daming",
                RreportCard = new RreportCard() { Id = Guid.NewGuid(), Name = "Mathematics", Score = 90 }
            });
            var id3 = Guid.NewGuid();
            repo.Add(new Student
            {
                Id = id3,
                Name = "me",
                RreportCard = new RreportCard() { Id = Guid.NewGuid(), Name = "Mathematics", Score = 78, StudentId = id3 },
            });
            repo.DbContext.ChangeTracker.QueryTrackingBehavior = QueryTrackingBehavior.NoTracking;
            var arr = new string[] { "daming", "me" };
            var list = repo.List(x => arr.Contains(x.Name), s => s.Name);
            var list2 = repo.List(x => arr.Contains(x.Name), x => x.RreportCard);
            Console.Read();
        }

    }
    public class MyDBConext : DbContext
    {
        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
            modelBuilder.Entity<Student>(x =>
            {
                x.HasOne(t => t.RreportCard).WithOne(t => t.Student).OnDelete(DeleteBehavior.Cascade);
            });
        }
        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            base.OnConfiguring(optionsBuilder);
            optionsBuilder.UseSqlite("Data Source=TestDB.db");
        }
        public DbSet<Student> TestEntities { get; set; }

    }
    public class Student
    {
        public Guid Id { get; set; }
        public string Name { get; set; }
        public RreportCard RreportCard { get; set; }
    }

    public class RreportCard
    {
        public Guid Id { get; set; }
        public string Name { get; set; }
        public double Score { get; set; }
        public Guid StudentId { get; set; }
        public Student Student { get; set; }
    }

    class TestRepostory<TEntity>
        where TEntity : class
    {
        public TestRepostory(DbContext dbContext)
        {
            this.DbContext = dbContext;
            this.DbSet = this.DbContext.Set<TEntity>();
        }

        public DbContext DbContext { get; }
        public DbSet<TEntity> DbSet { get; }
        public virtual TEntity Add(TEntity entity)
        {
            this.DbSet.Add(entity);
            this.DbContext.SaveChanges();
            return entity;
        }
        public virtual TEntity Remove(TEntity entity)
        {
            this.DbSet.Remove(entity);
            this.DbContext.SaveChanges();
            return entity;
        }
        public virtual IList<TEntity> Remove(IList<TEntity> entities)
        {
            this.DbSet.RemoveRange(entities);
            this.DbContext.SaveChanges();
            return entities;
        }
        private IQueryable<TEntity> _List(Expression<Func<TEntity, bool>> where, Expression<Func<TEntity, object>> sort = null)
        {
            IQueryable<TEntity> queryable = this.DbSet;
            if (where != null) queryable = queryable.Where(where);
            if (sort != null)
            {
                queryable = queryable.OrderBy(sort);
            }
            return queryable;
        }
        public virtual IList<TEntity> List(Expression<Func<TEntity, bool>> where, Expression<Func<TEntity, object>> sort = null)
        {
            var queryable = _List(where, sort);
            var list = queryable.ToList();
            return list;
        }
        public virtual IList<TEntity> List<TProperty>(Expression<Func<TEntity, bool>> where, Expression<Func<TEntity, TProperty>> include, Expression<Func<TEntity, object>> sort = null)
            where TProperty : class, new()
        {
            var queryable = _List(where, sort);
            if (include != null) queryable = queryable.Include(include);
            var list = queryable.ToList();
            return list;
        }
    }
}

Expected behavior

• 在vs2019中代码编译通过，并且正常运行，变量list、list2正常获取到值

• In vs2019, the code is compiled and runs normally. Variables list and list2 are normally obtained

• 在控制台执行dotnet build编译通过

• Executing dotnet build successfully in the console

  Actual behavior

• 在vs2019中全部正常

• All succeeded in vs2019

• 在控制台执行dotnet build编译失败

• Executing dotnet build compilation failed in console

Error output:

Program.cs(41,24): error CS0310: '“string”必须是具有公共的无参数构造函数的非抽象类型，才能用作泛型类型或方法“TestRepostory<Student>.List<TProperty>(Expression<Func<Student, bool>>, Expression<Func<Student, TProperty>>, Expression<Func<Student, object>>)”中的参数“TProperty” [\OvloadBuildFail\OvloadBuildFail\OvloadBuildFail.csproj]

生成失败。

Program.cs(41,24): error CS0310: '“string”必须是具有公共的无参数构造函数的非抽象类型，才能用作泛型类型或方法“TestRepostory<Student>.List<TProperty>(Expression<Func<Student, bool>>, Expression<Func<Student, TProperty>>, Expression<Func<Student, object>>)”中的参数“TProperty” [\OvloadBuildFail\OvloadBuildFail\OvloadBuildFail.csproj]
    0 个警告
    1 个错误

已用时间 00:00:01.87

Environment data

dotnet --info output:

 Core SDK（反映任何 global.json）:
 Version:   2.2.101
 Commit:    236713b0b7

运行时环境:
 OS Name:     Windows
 OS Version:  10.0.18362
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\2.2.101\

Host (useful for support):
  Version: 2.2.0
  Commit:  1249f08fed

.NET Core SDKs installed:
  2.1.202 [C:\Program Files\dotnet\sdk]
  2.1.502 [C:\Program Files\dotnet\sdk]
  2.1.505 [C:\Program Files\dotnet\sdk]
  2.1.508 [C:\Program Files\dotnet\sdk]
  2.1.602 [C:\Program Files\dotnet\sdk]
  2.1.604 [C:\Program Files\dotnet\sdk]
  2.1.700 [C:\Program Files\dotnet\sdk]
  2.1.701 [C:\Program Files\dotnet\sdk]
  2.1.801 [C:\Program Files\dotnet\sdk]
  2.2.101 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.12 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.12 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.12 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

[livarcocc]

@agocke @jaredpar any ideas?

[jaredpar]

Do we know which version of VS2019 is being used here? Need that to understand which SDK is involved for the good scenario.

[jaredpar]

So far I've been unable to reproduce this. I used the following SDK versions:

• 2.1.600
• 3.0.100-preview7

The code compiled in both cases.

[livarcocc]

I see he is using 2.2.101, which is the equivalent of 15.9 for the SDK, while VS is some 16.x build.

[zhangyiqiu]

谢谢大家
Thanks everyone.

此问题和sdk版本有关，2.2.101会有这个问题
This issue is related to the sdk version，2.2.101 will have this problem.

在我安装当前最新版的dotnet-sdk-2.2.401后此问题得到解决
This problem is solved after I install the latest version of dotnet-sdk-2.2.401.