我有一個使用 Entity Framework v6.0 和員工表的 MVC ASP.Net 應用程序。我們使用 Code First 方法和標準 Create (CRUD) 方法，該方法具有對現有員工的 EF 查找以及對員工 CreatedBy/ModifiedBy 字段的 EF 查找。嘗試為兩者（EF 對象存根）創建模擬失敗。[HttpPost][ValidateAntiForgeryToken]public ActionResult Create([Bind(Include = "EmployeeID,TeamID,EmployeeADID,FirstName,MiddleName,LastName,EmailAddress,IsAdministrator,IsDeleted")] Employee employee){    if (ModelState.IsValid)    {        //Only unique employee IDs        var existingEmployee = db.Employees.FirstOrDefault(o => o.EmployeeADID == employee.EmployeeADID);        if(existingEmployee != null)        {            ViewBag.Error = "Employee ID must be unique, this employee (" + existingEmployee.FullName + ") already exists in the system.";            ViewBag.TeamID = new SelectList(db.Teams, "TeamID", "Name", employee.TeamID);            return View(existingEmployee);        }        SetAuditFields(employee);        db.Employees.Add(employee);        db.SaveChanges();        return RedirectToAction("Index");    }        ViewBag.TeamID = new SelectList(db.Teams, "TeamID", "Name", employee.TeamID);    return View(employee);}問題是SetAuditFields調用，我需要為編輯操作模擬db.Employees.AsNoTracking AsNoTracking。private void SetAuditFields(Employee employee, bool onlyModified = false){    char sep = '\\';    string pID = User.Identity.Name.Split(sep)[1].ToUpper();    var users = db.Employees.AsNoTracking().Where(c => c.EmployeeADID == pID || c.EmployeeID == employee.EmployeeID).ToList();    var currentUser = users.FirstOrDefault(u => u.EmployeeADID == pID);那么我如何db.Employees.AsNoTracking在最初模擬之后模擬db.Employees呢？下面代碼中注釋掉的這兩行不起作用并失?。骸俺蓡T 'IQueryable.Provider' 尚未在類型 'DbSet 1Proxy' which inherits from 'DbSet1'上實現我也嘗試過，mockContext.SetupSequence但我需要在打開和關閉 AsNoTracking 之間進行交換。當然一定有我遺漏的東西嗎？