MVC 4中的Ajax异步调用 [英] Ajax Async call in MVC 4

问题描述

我有一个JS函数可以进行AJAX异步调用.

I have a JS function that makes an AJAX Async call.

function PostCall() {
        $('#txtRes').val('Please Wait......');
        var reqval = $('#txtReq').val();
        $.ajax({
            url: "@urlsMenu",
            type: 'post',
            data: "{'name':'" + reqval + "'}",
            async: true,
            contentType: "application/json",
             success: function (result) {
                debugger;
                $('#txtRes').val(result);

            }

        });
    }

我在Controller类中有一个函数可以进行Service调用.

I have a function in Controller class that makes a Service call.

public JsonResult PostAsync(string name)
        {
            string val = "Not Found ";
            MySr.Service1Client scc = new MySr.Service1Client();
           
          scc.GetDataCompleted += (result, e) =>
           {
               val = e.Result;
               string str = val;

           };
           scc.GetDataAsync(name);

           return Json(val, JsonRequestBehavior.AllowGet);
        }

但是，我的问题是，服务器端函数已经返回了值(如未找到")，而不是在webservice调用之后收到的值.

我希望函数在Web服务返回值后返回值.

But, my problem is, the Server-Side function already returns the value (as "Not Found") instead of the value received after the webservice call.

I want the function to return the value after the webservice returns the value.

推荐答案

(' #txtRes').val(' 请稍候.... ..'); var reqval =

('#txtRes').val('Please Wait......'); var reqval =

('

('#txtReq').val();

.ajax({ url:" ， 类型:' post'， 数据:" + reqval + " ， 异步: true ， contentType:" ， 成功:功能(结果){ 调试器;

.ajax({ url: "@urlsMenu", type: 'post', data: "{'name':'" + reqval + "'}", async: true, contentType: "application/json", success: function (result) { debugger;

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