ASP.net c#，采用不同参数类型的同名方法 [英] ASP.net c#, Same name method that takes different argument type

问题描述

可能重复:
可以在ASP.Net MVC中重载控制器方法吗?

我需要2个采用不同类型参数的方法.所以我尝试了这个

I need to 2 methods that takes different type of argument. so I tried this,

[HttpPost]
public ActionResult ItemUpdate(ORDER ln)
{
   // do something
}

[HttpPost]
public ActionResult ItemUpdate(List<ORDER> lns)
{
  // Do Something
}

但它不起作用.

编译时没有错误，但是运行时会出错.

No error while compiling, but when run, it makes an error.

我如何编写代码以使其正常工作?

How I write the code to make that works?

谢谢！

[HttpGet]
public ActionResult ItemUpdate(string name)
{
    return Content(name);
}

[HttpGet]
public ActionResult ItemUpdate(int num)
{
    return Content(num.ToString());
}

当我致电/Test/ItemUpdate/

and when I call /Test/ItemUpdate/

会出错，

Server Error in '/' Application.
The current request for action 'ItemUpdate' on controller type 'OrderController' is ambiguous between the following action methods:
System.Web.Mvc.ActionResult ItemUpdate(System.String) on type Ecom.WebUI.Controllers.OrderController
System.Web.Mvc.ActionResult ItemUpdate(Int32) on type Ecom.WebUI.Controllers.OrderController 

即使单个参数也不能与ORDER匹配.

It does not match with ORDER even single parameter.

if (lns.GetType() == typeof(ORDER))
{
  // always false
}else{
  // also I can not cast the object.
  ORDER ln = (ORDER)lns; //Unable to cast object of type 'System.Object' to type 'ORDER'
}

推荐答案

您无法在控制器中执行此操作.您将不得不更改第二个方法名称.

You can't do that in a controller. You will have to change the second method name.

[HttpPost]
public ActionResult ItemUpdates(List<ORDER> lns)
{
  // Do Something
}

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