Question

我刚开始使用htmlagilitypack，到目前为止我很喜欢它。

我尝试选择单选按钮并使用htmlagility提交表单。

以下是该网站的结构：

<form class="picker" action="link.html" method="POST">
    <ul class="selection-list">
        <li>
            <label>
                <span class="left-side">
                    <input name="id" value="t1" type="radio">
                </span>
                <span class="right-side">
                    Test1
                </span>
            </label>
        </li>
        <li>
            <label>
                <span class="left-side">
                    <input name="id" value="t2" type="radio">
                </span>
                <span class="right-side">
                    Test2
                </span>
            </label>
        </li>
        <li>
            <label>
                <span class="left-side">
                    <input name="id" value="t3" type="radio">
                </span>
                <span class="right-side">
                    Test3
                </span>
            </label>
        </li>
    </ul>
</form>

我可以获得表格。这是代码：

    HtmlWeb web = new HtmlWeb();
HtmlDocument doc = web.Load(urlAddress);

// Get the form
var form = doc.DocumentNode.SelectSingleNode("//form[@class='picker']");

如何选择

Test2并提交表格？是否可以使用htmlagilitypack或我需要另一个库？

由于

Answer 1

var uri = // get uri from form;
var formVariables = new List<KeyValuePair<string, string>>();

// Populate your variables here; HtmlAgilityPack is useful for propagating existing form values
formVariables.Add(new KeyValuePair<string,string>("id","t2"));

var formContent = new FormUrlEncodedContent(formVariables);

using (var message = new HttpRequestMessage { Method = HttpMethod.Post, RequestUri = uri, Content = formContent })
{
    // use HttpClient to send the message
    using (var postResponse = await client.SendAsync(message))
    {
        if (postResponse.IsSuccessStatusCode)
        {
            var stringContent = await response.Content.ReadAsStringAsync();

            // Do something with string content
        }
    }
}

htmlagilitypack选择元素并提交表单

1 个答案: