如何将动态变量传递到ASP.NET MVC中的authorize属性类中?

use*_*672 5 c# asp.net asp.net-mvc class-attributes asp.net-mvc-4

如何将动态变量传递到ASP.NET MVC中的authorize属性类中?

例如,我有这段代码,如何将诸如userRoles变量之类的变量传递到Authorize属性类中?

private  string userRoles;
private string getuserRoles() 
{
     //Write your code to get userRoles
     userRoles = "admin";
     return "admin";
 }

[Authorize(Roles = object.getuserRoles())]
public ActionResult Admin()
{
       ViewBag.Message = "Your contact page.";

        return View();

}
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我的代码发出此错误

错误1属性参数必须是属性参数类型C:\ Users \ Nashat \ Downloads \ New文件夹(3)\ MvcPWy \ Controllers \ HomeController.cs的常数表达式,typeof表达式或数组创建表达式39 28 MvcPWy

因此,请任何人帮我解决此错误。