您可以创建一个元素，比如用一个id的div

You could create an element, say a div with an id

<div id='external-json' data-bind='jsonHandler : {}' style='display:none'></div>

然后从您的WinForms中的应用程序。

Then write json to this div from within your winforms app..

var myJson = "{test : 1}";
this.browser.Document.Body.GetElementById("external-json").innerText = myJson; 

您甚至可以创建自定义的淘汰赛结合对此有何反应

You could even create a knockout custom binding to react to this

    ko.bindingHandlers.jsonHandler = {
        update: function(element, valueAccessor) {
        //do something with the json
        var json = element.innerText;
        var obj = eval(json); //hmm
        alert(obj.test); 
    }
};

这显然是一个简单的例子，你可能可以改善的想法很多，你可能需要消息队列，可能调用您的客户端脚本函数，而不是使用的元素。

This is obviously a simple example and you could probably improve the idea a lot, you may need a queue of messages, possibly calling a function in your client script instead of using the element.