web或winfrom如何直接与网页交互?高分等了

Question

简单的说就比如QQ的注册,我如何得到他网页的信息,以及post给他数据并且让他接受到.希望给个思路或者提供相应的类,或者代码.谢谢了

Answer 1

应该是用WEBREQUEST/WEBRESPONSE
或WEBHTTPREQUEST/。两个类吧然后读取response的回应流，分析

Answer 2

使用DOM（文档对象模型） 
将HTML文档解析为DOM，然后遍历每个节点，在其中搜索关键字并进行相应替换处理即可。     public partial class HilightDemo : Form 
    { 
        //……         private void btnHilight_Click(object sender, EventArgs e) 
        { 
            HTMLDocument document = (HTMLDocument)webBrowser.Document.DomDocument; 
            IHTMLDOMNode bodyNode = (IHTMLDOMNode)webBrowser.Document.Body.DomElement; 
            string keyword = txtKeyword.Text.Trim(); 
            if (keyword == "") 
                return;             HilightText(document, bodyNode, keyword); 
        }         private void HilightText(HTMLDocument document, IHTMLDOMNode node, string keyword) 
        { 
            // nodeType = 3：text节点 
            if (node.nodeType == 3) 
            { 
                string nodeText = node.nodeValue.ToString(); 
                // 如果找到了关键字 
                if (nodeText.Contains(keyword)) 
                { 
                    IHTMLDOMNode parentNode = node.parentNode; 
                    // 将关键字作为分隔符，将文本分离，并逐个添加到原text节点的父节点 
                    string[] result = nodeText.Split(new string[] { keyword }, StringSplitOptions.None); 
                    for (int i = 0; i < result.Length - 1; i++) 
                    { 
                        if (result[i] != "") 
                        { 
                            IHTMLDOMNode txtNode = document.createTextNode(result[i]); 
                            parentNode.insertBefore(txtNode, node); 
                        } 
                        IHTMLDOMNode orgNode = document.createTextNode(keyword); 
                        IHTMLDOMNode hilightedNode = (IHTMLDOMNode)document.createElement("SPAN"); 
                        IHTMLStyle style = ((IHTMLElement)hilightedNode).style; 
                        style.color = "black"; 
                        style.backgroundColor = "yellow"; 
                        hilightedNode.appendChild(orgNode);                         parentNode.insertBefore(hilightedNode, node); 
                    } 
                    if (result[result.Length - 1] != "") 
                    { 
                            IHTMLDOMNode postNode = document.createTextNode(result[result.Length - 1]); 
                            parentNode.insertBefore(postNode, node); 
                    } 
                    parentNode.removeChild(node); 
                } // End of nodeText.Contains(keyword) 
            } 
            else 
            { 
                // 如果不是text节点，则递归搜索其子节点 
                IHTMLDOMChildrenCollection childNodes = node.childNodes as IHTMLDOMChildrenCollection; 
                foreach (IHTMLDOMNode n in childNodes) 
                { 
                    HilightText(document, n, keyword); 
                } 
            } 
        } 
    } 

Answer 3

http://www.cnblogs.com/topboy/archive/2007/02/01/636510.html

Answer 4

谢谢了  我先LOOK下  看看思路

Answer 5

有些验证就是摆设
比如CSDN
丢人啊~~~~~

Answer 6

try
{
string sPostDate="username=u&Password=p";
string sReturnString="";
UTF8Encoding encoding=new UTF8Encoding();
byte[]  byte1=encoding.GetBytes(sPostDate);
HttpWebRequest request = (HttpWebRequest) WebRequest.Create("http://www.exsoon.com");
request.CookieContainer=new CookieContainer();
request.Method="POST";
request.Accept="*.*";
request.ContentLength=sPostDate.Length;
request.ContentType="application/x-www-form-urlencoded";
request.ServicePoint.Expect100Continue = false;
Stream newStream=request.GetRequestStream();
newStream.Write(byte1,0,byte1.Length);
//request.get
request.Timeout=3000;
HttpWebResponse response = (HttpWebResponse) request.GetResponse(); 
byte[] buf = new byte[46000]; 
string xx=response.StatusCode + "//" + response.StatusDescription;
Stream resStream = response.GetResponseStream(); 
//resStream.Write(byte1,0,byte1.Length);
int count = resStream.Read(buf, 0, buf.Length); 
sReturnString=sReturnString+Encoding.Default.GetString(buf,0,count); 
resStream.Close(); 
newStream.Close();
}
catch(Exception ex)
{
sReturnString=ex.Message;
}

Answer 7

首先用工具或者直接看它的HTML源代码，找到它原来表单发送的内容，然后在C#中用HttpWebRequest去发送，HttpWebResponse来接受返回的页面。