实际上,我有一个使用WebService检索某些客户端信息的应用程序。
所以我正在验证我的ActionResult内部的登录信息,例如:

[AcceptVerbs(HttpVerbs.Post)]
public ActionResult ClientLogin(FormCollection collection)
{
    if(Client.validate(collection["username"], collection["password"]))
    {
        Session["username"] = collection["username"];
        Session["password"] = collection["password"];
        return View("valid");
    }
    else
    {
       Session["username"] = "";
       Session["password"] = "";
       return View("invalid");
    }
}

其中Client.Validate()是一种基于POST用户名和密码提供的信息返回 bool 值的方法

但是我改变了主意,我想在该方法的开头使用该不错的ActionFilterAttributes,以便仅在Client.validate()返回true时才呈现它,与[Authorize]相同,但使用我的自定义网络服务,因此我会有类似的东西:
[AcceptVerbs(HttpVerbs.Post)]
[ValidateAsClient(username=postedUsername,password=postedPassword)]
//Pass Posted username and password to ValidateAsClient Class
//If returns true render the view
public ActionResult ClientLogin()
{
    return View('valid')
}

然后在ValidateAsClient中,我将得到以下内容:
public class ValidateAsClient : ActionFilterAttribute
{
    public string username { get; set; }
    public string password { get; set; }

    public Boolean ValidateAsClient()
    {
        return Client.validate(username,password);
    }
}

所以我的问题是,我不确切地知道如何使它工作,因为我不知道如何将POSTED信息传递给[ValidateAsClient(username = postedUsername,password = postedPassword)],而且我该如何使函数ValidateAsClient是否正常工作?

我希望这很容易理解
提前致谢

最佳答案

大概是这样的:

[AttributeUsage(AttributeTargets.All)]
public sealed class ValidateAsClientAttribute : ActionFilterAttribute
{
    private readonly NameValueCollection formData;
    public NameValueCollection FormData{ get { return formData; } }

    public ValidateAsClientAttribute (NameValueCollection formData)
    {
        this.formData = formData;
    }

    public override void OnActionExecuting
               (ActionExecutingContext filterContext)
    {
        string username = formData["username"];
        if (string.IsNullOrEmpty(username))
        {
             filterContext.Controller.ViewData.ModelState.AddModelError("username");
        }
        // you get the idea
    }
}

并像这样使用它:
[ValidateAsClient(HttpContext.Request.Form)]

10-01 16:31