移除所有HTML tag + 移除 JavaScript

/// <summary>

/// 移除html tag

/// </summary>

/// <param name="htmlSource"></param>

/// <returns></returns>

public static string RemoveHTMLTag(string htmlSource)

{

    //移除  javascript code.

    htmlSource = Regex.Replace(htmlSource, @"<script[\d\D]*?>[\d\D]*?</script>", String.Empty);

    //移除html tag.

    htmlSource = Regex.Replace(htmlSource, @"<[^>]*>", String.Empty);

    return htmlSource;

}

/// <summary>

/// 從網路上取得原始碼

/// </summary>

/// <param name="url"></param>

/// <returns></returns>

public static string GetSourceFromUrl(string url)

{

    WebClient client = new WebClient();

    //以防萬一 模擬自己為瀏覽器

    client.Headers.Add("User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.56 Safari/536.5");

    client.Headers.Add("Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");

    client.Headers.Add("Accept-Encoding: identity");

    client.Headers.Add("Accept-Language: zh-TW,en;q=0.8");

    client.Headers.Add("Accept-Charset: utf-8;q=0.7,*;q=0.3");

    client.Headers.Add("ContentType", "application/x-www-form-urlencoded");

    client.Encoding = Encoding.UTF8;

    return client.DownloadString(url);

}

使用:

protected void btnTest_Click(object sender, EventArgs e)

{

    ltlResult.Text = RemoveHTMLTag(GetSourceFromUrl(this.txtLink.Text));

}

原始文章出自於此