问题描述

如何直接从代码隐藏调用 ASP.NET Web API?或者我应该调用从代码隐藏中调用 getJSON 方法的 javascript 函数?

How would I call an ASP.NET Web API directly from code-behind? Or should I be calling my javascript function that calls the getJSON method from code-behind?

我通常有这样的事情:

    function createFile() {
        $.getJSON("api/file/createfile",
        function (data) { 
            $("#Result").append('Success!');
        });
    }

任何指针表示赞赏.TIA.

Any pointers appreciated. TIA.

*我使用的是 WebForms.

*I'm using WebForms.

推荐答案

如果必须自己调用 web 服务，可以尝试使用 HttpClient 如 Henrik Neilsen 所述.

If you must call the web service itself, you can try using HttpClient as described by Henrik Neilsen.

更新的 HTTPClient 示例

一个基本的例子:

// Create an HttpClient instance 
HttpClient client = new HttpClient(); 

// Send a request asynchronously continue when complete 
client.GetAsync(_address).ContinueWith( 
    (requestTask) => 
    { 
        // Get HTTP response from completed task. 
        HttpResponseMessage response = requestTask.Result; 

       // Check that response was successful or throw exception 
        response.EnsureSuccessStatusCode(); 

        // Read response asynchronously as JsonValue
        response.Content.ReadAsAsync<JsonArray>().ContinueWith( 
                    (readTask) => 
                    { 
                        var result = readTask.Result
                        //Do something with the result                   
                    }); 
    }); 

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