MVC - 在Northwind DB中創建控制器操作CreateNewEmployee

Question

我嘗試在MVC中創建一個新的Employee。 控制器：

HireEmployeeBL.EmployeeBL employeeBl = new HireEmployeeBL.EmployeeBL(); 

    public ActionResult HireNew(int id) 
{ 
    return View(); 
} 

[HttpPost] 
public ActionResult HireNew(int id, Employee employee) 
{ 
    employee.ReportsTo = new Manager { EmployeeID = id }; 
    employeeBl.AddEmployee(employee); 
    return RedirectToAction("Subordinates"); 
    //return View(); 
} 

服務器錯誤：

The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult HireNew(Int32)' in 'MvcEmployee.Controllers.EmployeeController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Parameter name: parameters

Answer 1

[HttpPost] 
     public ActionResult Create(Employee employee) 
     { 
      try 
      { 
       NorthwindEntities northwindEntities = new NorthwindEntities(); 
       northwindEntities.Employees.Add(employee); 
       northwindEntities.SaveChanges(); 

       return RedirectToAction("Index"); 
      } 
      catch 
      { 
       return View(); 
      } 
     }