如何在ASP.NET MVC控制器中获取Identity PasswordOptions

问题描述

我想从MVC Controller中读取在Startup.cs中配置的标识PasswordOptions.我的PasswordOptions配置如下:

I want to read the Identity PasswordOptions that are configured in Startup.cs from an MVC Controller. My PasswordOptions is configured like this:

services.AddIdentity<ApplicationUser, IdentityRole>(config => {
        config.Password.RequireDigit = true;
        config.Password.RequiredLength = 8;
        config.Password.RequireNonAlphanumeric = true;
});

然后如何读取Controller或应用程序其他位置的RequireDigit，PasswordLength和RequireNonAlphanumeric属性?

How do I then read the RequireDigit, PasswordLength, and RequireNonAlphanumeric properties in a Controller or elsewhere in the app?

使用ASP.NET Core 1.0.1.

Using ASP.NET Core 1.0.1.

推荐答案

只需将IOptions<IdentityOptions>接口注入到任何类或控制器的构造函数中，如下所示:

Simply inject IOptions<IdentityOptions> interface to any class or controller's constructor like this:

 public class MyController : Controller
 {
     private readonly IOptions<IdentityOptions> _identityOptions;
     public MyContoller(IOptions<IdentityOptions> identityOptions)
     {
         _identityOptions=identityOptions?.Value ?? new IdentityOptions();
     }

     public MyAction()
     {
         var length=_identityOptions.Value.Password.RequiredLength;
     }
 }

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