Entity framework 实体框架-如何将Include传递给方法调用方？

我有一个从实体框架数据库调用DbSet的方法：

    public static List<CostEntryVM> ToViewModelList(this DbSet<CostEntry> CostEntrys, Expression<Func<CostEntry, bool>> query) {

        return AutoMapper.Mapper.Map<List<CostEntry>, List<CostEntryVM>>(
              CostEntrys
                .Include(x => x.Job)
                .Include(x => x.User)
                .Where(query)
                .ToList());
    }

我还想打电话：

        CostEntrys.ToViewModelList(x => x.Include(y => y.Job).Include(y.User), x => x.Active == true);

在我的一生中，我无法弄清楚方法签名应该是什么样子，或者如何将其应用于DbSet

---

如何执行此操作？

首先，您需要将扩展方法更改为：

public static List<CostEntryVM> ToViewModelList(
        this DbSet<CostEntry> CostEntrys, 
        Expression<Func<CostEntry, bool>> query,
        Func<IQueryable<CostEntry>, IQueryable<CostEntry>> func)
{
    // Adding the predicate query
    IQueryable<CostEntry> queryable = CostEntrys.Where(query);

    // Adding include paths
    IQueryable<CostEntry> queryableWithFetch = func(queryable);

    // Executing the query and map it to the view model object
    return AutoMapper.Mapper.Map<List<CostEntry>, List<CostEntryVM>>(
            queryableWithFetch.ToList());
}

public static List<CostEntryVM> ToViewModelList(
        this DbSet<CostEntry> CostEntrys, 
        Expression<Func<CostEntry, bool>> query,
        Func<IQueryable<CostEntry>, IQueryable<CostEntry>> func)
{
    // Adding the predicate query
    IQueryable<CostEntry> queryable = CostEntrys.Where(query);

    // Adding include paths
    IQueryable<CostEntry> queryableWithFetch = func(queryable);

    // Executing the query and map it to the view model object
    return AutoMapper.Mapper.Map<List<CostEntry>, List<CostEntryVM>>(
            queryableWithFetch.ToList());
}

CostEntrys.ToViewModelList(
        x => x.Active == true, 
        x => x.Include(y => y.Job).Include(y.User));