How to capture web page certain field value using C#?

Question

I would like to capture the label value of the web page. For example, the web page will be opened everyday once and the value of the label id="lblTest" can be captured automatically without manual record.

May i know how can I do this by using C# language and ASP.net? The web page doesn't has any API for me to retrieve the data.

Thank you very much.

Answer 1

You can use HTML Agility Pack.

Here

Answer 2

You can try with this.

using System.Net;
using System.Text.RegularExpressions;


public string GetLabelValue(string url)
{            
    // download your web page content
    WebClient client = new WebClient();
    string downloadString = client.DownloadString(url);

    // regular expression
    var pattern = @"<label.+id=""lblTest"".{0,}>(.+)</label>";
    var match = Regex.Match(downloadString, pattern, RegexOptions.IgnoreCase);

    // getting the label value
    var labelValue = match.Groups[1].Value;

    return labelValue;
}