C# 通过 ASP.net 发送 HTTP Post 请求
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Send HTTP Post Request through ASP.net
提问by asad
I've hit a road block due to this problem in my project, Any kind of help will be highly appreciated.
由于我的项目中的这个问题，我遇到了障碍，任何形式的帮助都将受到高度赞赏。
My problem is that I want users to enter (their) destination & email at my website. Then I'll take those values and fill in the text fields at the following website and then click the "request measurement button". In short a simple HTTP Post request.
我的问题是我希望用户在我的网站上输入（他们的）目的地和电子邮件。然后我将获取这些值并填写以下网站上的文本字段，然后单击“请求测量按钮”。简而言之，一个简单的 HTTP Post 请求。
http://revtr.cs.washington.edu/
http://revtr.cs.washington.edu/
My C# code is as follows:
我的 C# 代码如下：
// variables to store parameter values
string url = "http://revtr.cs.washington.edu/";
// creates the post data for the POST request
string postData = ("destination=www.thechive.com&node=161&email=abc%40xyz.edu.pk&prediction=If+you+believe+you+know+the+traceroute+%28for+instance%2C+if+you+are+trying+out+our+system+using+a+destination+that+you+actually+control%29%2C+please+cut-and-paste+the+traceroute+into+this+box+to+aid+us+in+improving+our+system.");
// create the POST request
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.Method = "POST";
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.ContentLength = postData.Length;
// POST the data
using (StreamWriter requestWriter2 = new StreamWriter(webRequest.GetRequestStream()))
{
requestWriter2.Write(postData);
}
// This actually does the request and gets the response back
HttpWebResponse resp = (HttpWebResponse)webRequest.GetResponse();
string responseData = string.Empty;
using (StreamReader responseReader = new StreamReader(webRequest.GetResponse().GetResponseStream()))
{
// dumps the HTML from the response into a string variable
responseData = responseReader.ReadToEnd();
}
// Now, find the index of some word on the page that would be
// displayed if the login was successful
int index = responseData.IndexOf("Measuring");
if (index > -1)
ListBox1.Items.Add("SUCCESS");
But the responseDatashows that the BUTTON hasn't been clicked when the program is run (I got this info from debugger of VS2010)
但是responseData显示程序运行时没有点击BUTTON（我从VS2010的调试器中得到了这个信息）
采纳答案by jjchiw
it seems the url must be
看来网址必须是
string url = "http://revtr.cs.washington.edu/measure.php";
since is the action of the form.
因为是表单的动作。
