实体框架核心2.0.1渴望在所有嵌套相关实体上加载

该功能目前正式不存在（EF Core 2.0.2以及即将推出的2.1）。已在“
急切加载”中请求所有导航属性＃4851（已关闭），目前已通过基于规则的急切加载（包括）＃2953和允许在模型中声明聚合（例如，定义包含的属性或通过其他方式）进行跟踪＃1985（均在积压中，即没有具体的时间表）。

我可以提供以下两种自定义扩展方法：

using System;using System.Collections.Generic;using System.Linq;using Microsoft.EntityframeworkCore.metadata;namespace Microsoft.EntityframeworkCore{    public static partial class CustomExtensions    {        public static IQueryable<T> Include<T>(this IQueryable<T> source, IEnumerable<string> navigationPropertyPaths) where T : class        { return navigationPropertyPaths.Aggregate(source, (query, path) => query.Include(path));        }        public static IEnumerable<string> GetIncludePaths(this DbContext context, Type clrEntityType)        { var entityType = context.Model.FindEntityType(clrEntityType); var includedNavigations = new HashSet<INavigation>(); var stack = new Stack<IEnumerator<INavigation>>(); while (true) {     var entityNavigations = new List<INavigation>();     foreach (var navigation in entityType.GetNavigations())     {         if (includedNavigations.Add(navigation))  entityNavigations.Add(navigation);     }     if (entityNavigations.Count == 0)     {         if (stack.Count > 0)  yield return string.Join(".", stack.Reverse().Select(e => e.Current.Name));     }     else     {         foreach (var navigation in entityNavigations)         {  var inverseNavigation = navigation.FindInverse();  if (inverseNavigation != null)      includedNavigations.Add(inverseNavigation);         }         stack.Push(entityNavigations.GetEnumerator());     }     while (stack.Count > 0 && !stack.Peek().MoveNext())         stack.Pop();     if (stack.Count == 0) break;     entityType = stack.Peek().Current.GetTargetType(); }        }    }}

第一种只是应用多个字符串库的便捷方法

Include

第二个步骤

Include

您的示例中的用法可能是这样的：

public virtual async Task<IEnumerable<T>> GetAllAsync(expression<Func<T, bool>> predicate = null){    var query = Context.Set<T>()        .Include(Context.GetIncludePaths(typeof(T));    if (predicate != null)        query = query.Where(predicate);    return await query.ToListAsync();}