Question

怎么设置webBrowser的HTML内容

Answer 1

WebClient MyWebClient = new WebClient();
MyWebClient.Credentials = CredentialCache.DefaultCredentials; //获取或设置用于向Internet资源的请求进行身份验证的网络凭据
Byte[] pageData = MyWebClient.DownloadData(tbUrl.Text); //从指定网站下载数据
string pageHtml = Encoding.Default.GetString(pageData); //把字节转化为字符串，注意编码方式

2、使用WebBrowser控件
//通过WebBrowser空间访问网页，然后获取网页数据
WebBrowser web = new WebBrowser();
web.Navigate(tbUrl.Text);
web.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(web_DocumentCompleted); //当网页加载完成时触发该事件，获取网页数据

void web_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
//获取该html页面内的Table标签的内容
WebBrowser web = (WebBrowser)sender;
HtmlElementCollection ElementCollection = web.Document.getElementsByTagName_r("Table");
foreach (HtmlElement item in ElementCollection)
{
textBox1.AppendText(item.InnerText + "\n");
}
}

3、使用HttpWebRequest/HttpWebResponse
HttpWebRequest httpReq;
HttpWebResponse httpResp;

Uri httpURL = new Uri(this.tbUrl.Text);
httpReq = (HttpWebRequest)WebRequest.Create(httpURL);
httpResp = (HttpWebResponse)httpReq.GetResponse();

Stream respStream = httpResp.GetResponseStream(); //得到数据流，再把数据流转化为特定的数据（图片，文本。。。）

//如果是图片流
pictureBox1.Image = Image.FromStream(respStream);

//如果是文本流
byte[] cbuffer = new byte[256];
StreamReader respStreamReader = new StreamReader(respStream,Encoding.UTF8); //编码为utf8
byteRead = respStreamReader.Read(cbuffer,0,256); //读取256个字节
string strResp = new string(cbuffer,0,byteRead);