在后台服务器上下载一个Form验证的页面，如何把用户明和密码提交过去?

huangcaibing 2008-05-26 09:59:27

public void Send(string sPostUrl, string strFile)
{
HttpWebRequest request = (HttpWebRequest) WebRequest.Create(sPostUrl);
request.CookieContainer=sSessionId;
request.Method="get";

//request.Timeout=2240;
HttpWebResponse response = (HttpWebResponse) request.GetResponse();

byte[] buf = new byte[1024];
int count=0;
if(System.IO.File.Exists(strFile))
{
System.IO.File.Delete(strFile);
}
System.IO.FileStream fs=new System.IO.FileStream(strFile,System.IO.FileMode.CreateNew,System.IO.FileAccess.Write);
while(true)
{
//resStream.Write(byte1,0,byte1.Length);
buf = new byte[1024];
count = response.GetResponseStream().Read(buf, 0, buf.Length);
if (count<=0)
{
break;
}
fs.Write(buf,0,count);
}

fs.Close();
}

下载一个页面存到服务器上，现在的问题这个页面需要Form验证，怎么先提交用户名和密码先进行验证？

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Plougher 2008-05-26

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学习关注下

一品梅 2008-05-26

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private void OnPostInfoClick(object sender, System.EventArgs e) 

{ 

string strId = UserId_TextBox.Text; 

string strName = Name_TextBox.Text; 



ASCIIEncoding encoding=new ASCIIEncoding(); 

string postData="userid="+strId; 

postData += ("&username="+strName); 

byte[]  data = encoding.GetBytes(postData); 



// Prepare web request... 

HttpWebRequest myRequest = 

  (HttpWebRequest)WebRequest.Create("http://localhost/MyIdentity/Default.aspx"); 

myRequest.Method = "POST"; 

myRequest.ContentType="application/x-www-form-urlencoded"; 

myRequest.ContentLength = data.Length; 

Stream newStream=myRequest.GetRequestStream(); 

// Send the data. 

newStream.Write(data,0,data.Length); 

newStream.Close(); 

}

周公 2008-05-26

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using System;

using System.Net;

using System.Text;

using System.IO;





    public class Test

    {

        // Specify the URL to receive the request.

        public static void Main (string[] args)

        {

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create (url);



            // Set some reasonable limits on resources used by this request

            request.MaximumAutomaticRedirections = 4;

            request.MaximumResponseHeadersLength = 4;

            // Set credentials to use for this request.

            request.Credentials = new NetworkCredential(struserName,

	strpassword);//struserName,strpassword对应着用户名和帐号

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



            Console.WriteLine ("Content length is {0}", response.ContentLength);

            Console.WriteLine ("Content type is {0}", response.ContentType);

             

            // Get the stream associated with the response.

            Stream receiveStream = response.GetResponseStream ();



            // Pipes the stream to a higher level stream reader with the required encoding format. 

            StreamReader readStream = new StreamReader (receiveStream, Encoding.UTF8);



            Console.WriteLine ("Response stream received.");

            Console.WriteLine (readStream.ReadToEnd ());

            response.Close ();

            readStream.Close ();

        }

    }



/*

The output from this example will vary depending on the value passed into Main 

but will be similar to the following:



Content length is 1542

Content type is text/html; charset=utf-8

Response stream received.

<html>

...

</html>



*/

周公 2008-05-26

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比如用户名是：username
用户密码是：password
表单上的用户名控件是txtUsername,用户密码控件是：txtPassword
登录页面是：login.aspx
你这么试试：
HttpWebRequest request = (HttpWebRequest) WebRequest.Create("login.aspx?txtUsername=username&&txtPassword=password);

huangcaibing 2008-05-26