如何在 csharp 上提交后获得响应页面
本文关键字:响应 提交 csharp | 更新日期: 2023-09-27 18:31:31
远程网站中有一个页面,可以在表单中输入输入值,单击按钮并在输出表单中获取结果。我想向页面发送请求并填写必要的输入表单,提交它并获得一个填写了输出表单的结果页面。
所有具有类似主题的线程都给出了如下代码示例:
// Create a request using a URL that can receive a post.
WebRequest request = WebRequest.Create("http://www.site.com");
// Set the Method property of the request to POST.
request.Method = "POST";
// Create POST data and convert it to a byte array.
string postData = string.Format("inputParam=value");
byte[] byteArray = Encoding.UTF8.GetBytes(postData);
// Set the ContentType property of the WebRequest.
request.ContentType = "application/x-www-form-urlencoded";
// Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length;
// Get the request stream.
Stream dataStream = request.GetRequestStream();
// Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close();
// Get the response.
WebResponse response = request.GetResponse();
// Get the stream containing content returned by the server.
dataStream = response.GetResponseStream();
response.Close();
它返回一个包含已填写输入表单的页面,但输出字段仍然是空白的,就像它不执行提交按钮单击一样。
如何从 C# 代码执行提交并接收包含输出数据的 html 文档?
将网络响应部分更改为以下内容;
WebResponse response = request.GetResponse ();
dataStream = response.GetResponseStream ();
StreamReader reader = new StreamReader (dataStream);
string responseFromServer = reader.ReadToEnd ();