我如何从 IRepository 为 MVC 中的员工传递部门下拉列表

Question

Its Giving Me EmployeeList Again Instead of DepartementList InvalidCastException: Unable to cast object of type 'System.Collections.Generic.List 1[RepositoryPatteren_2.Models.Departement]' to type 'System.Collections.Generic.IEnumerable 1[RepositoryPatteren_2.Models.Employee ]'。

    **IRepository**
    IEnumerable<T> List();
        
        **Repository**
        public IEnumerable<T> List()
        {
          return table.ToList();
        }
            
        **EmployeeController**
       protected IRepository<Employee> IRep;
      public EmployeeController(IRepository<Employee> IRep)
        {
            this.IRep = IRep;
        }
    
        public IActionResult Edit(int Id)
        {
             //_______Passing ListTo DropDown___
          ViewBag.list = new 
          SelectList(IRep.List(),"Id", "Name");
          return View(IRep.GetT(x => x.Id == Id));
        }
        
        [HttpPost]
        public IActionResult Edit(Employee emp)
        {
          IRep.Update(emp);
           return RedirectToAction("Index");
        }