如何以編程方式POST HTML表單並獲得回覆

Question

我有一個獲取用戶名和密碼的表單，提交後會顯示該帳戶的一些信息。形式是：

<form id="LoginForm" target="Window81525062.79020184" action="Login.aspx" method="post" name="LoginForm"> 

     <input id="userID" type="text" maxlength="20" style="WIDTH: 160px; HEIGHT: 24px" onkeypress="CheckEnter()"> 

     <input id="Password" type="password" maxlength="20" style="WIDTH: 160px; HEIGHT: 24px" onkeypress="CheckEnter()"> 

     <div id="b2" class="social-media-shareTAK" style="width: 60px;"> 
      <div class="inner"></div> 
      <ul> 
       <li> 
        <a title="enter" target="_blank"> 
         <img src="/DL/Classes/BUTTON/images/Login.png" alt="" style="width: 38px; height: 38px; margin-top: 4px; cursor: pointer; position: absolute; left: 7px;"> 
        </a> 
       </li> 
      </ul> 
     </div> 
</form> 

現在我想從這些帳戶到另一個數據庫的數據庫和存儲信息輸入約100帳戶的用戶名和密碼。我應該怎麼做？ （我喜歡C＃，但如果有更好的辦法，請讓我知道）謝謝:)

Answer 1

這裏是一個C＃示例（服務器端代碼提供了更好的控制，所以我建議）

 StringBuilder postData = new StringBuilder(); 

     postData.Append("USERNAME_FIELD_NAME =" + HttpUtility.UrlEncode("USERNAME") + "&"); 
     postData.Append("PASSWORD_FIELD_NAME =" + HttpUtility.UrlEncode("PASSWORD")); 

     // Now to Send Data. 
     StreamWriter writer = null; 

     HttpWebRequest request = (HttpWebRequest)WebRequest.Create(THE_URL); 
     request.Method = "POST"; 
     request.ContentType = "application/x-www-form-urlencoded"; 
     request.ContentLength = postData.ToString().Length; 
     try 
     { 
      writer = new StreamWriter(request.GetRequestStream()); 
      writer.Write(postData.ToString()); 

     HttpWebResponse WebResp = (HttpWebResponse)request.GetResponse();      

     //Now, we read the response (the string), and output it. 
     Stream Answer = WebResp.GetResponseStream(); 
     StreamReader _Answer = new StreamReader(Answer); 
     Console.WriteLine(_Answer.ReadToEnd()); 

     } 
     finally 
     { 
      if (writer != null) 
       writer.Close(); 
     } 

來源/ HOWTO的：

http://msdn.microsoft.com/en-us/library/debx8sh9.aspx

http://forums.asp.net/t/1048041.aspx?How+to+programmatically+POST+data+to+an+aspx+page+

How to simulate HTTP POST programatically in ASP.NET?