Passing post parameters to action methods in asp.net mvc?

Question

I'm new to asp.net mvc. I'm having some trouble getting the values of parameters in my Action methods.

I have the following code:

[HttpPost]
public ActionResult ToggleRecommend(string mode)
{
    byte[] requestContent = new byte[Request.ContentLength];
    Request.InputStream.Read(requestContent, 0, Request.ContentLength);
    string content = Encoding.ASCII.GetString(requestContent);

    return EmptyResult();
}

I access this method using an Ajax request. The request has these headers:

Accept  application/json
Accept-Encoding gzip, deflate
Accept-Language en-gb,en;q=0.5
Connection  keep-alive
Content-Length  8
Content-Type    text/plain; charset=UTF-8
Host    localhost:62718
Referer http://localhost:62718/microsite
User-Agent  Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1
X-Request   JSON
X-Requested-With    XMLHttpRequest

and this body:

mode=off

My problem is that the mode parameter of ToggleRecommend is not being populated with the value from the request - instead, it is null.

The request is reaching my server correctly: the variable content in the method has the value mode=off and Request.ContentLength is 8 as expected. Also, Request.RequestType is "POST", as is intended. However, Request.Form is empty: it has no keys or values. (I don't know if that is relevant).

What is going wrong here? How do I get the value of my mode parameter to go into my action method?

The problem must be to do with post: If I remove the HttpPost attribute and do a request to the Url localhost:62718/microsite/toggleRecommend/?mode=off the mode parameter gets the value off as is intended.

Edit:

The request is being made with javascript using the Mootools library. I've included that part of the code below:

var req = new Request.JSON({ method: "post",
        url: "/microsite/toggleRecommend/" ,
        autoCancel: true, urlEncoded: false, secure: false,
        onFailure: recommendFail, onException: recommendFail,
        onSuccess: recommendSuccess
    });

    req.send({ data: { mode: 'on'} });

Using firebug, I can see the exact format of the request (and that looks fine) so hopefully the specifics of the javascript code doesn't matter.

Answer 1

您的ajax呼叫内容/类型为text / html，您需要向控制器指定您正在发送应用程序/ json信息，否则他会收到该信息，但不知道如何将其分发到它的params