我希望使用htmlagilitypack来获取实时数据,需要即时获取加密货币价格。我在项目中使用定时器实现每5秒刷新,但总是得到第一个值。例如,dolar现在是8.65try,但15秒后变为8.70try。我得到的数据始终是第一个值8.65try。
private void button1_Click(object sender, EventArgs e)
{
timer1.Start();
}
private void timer1_Tick(object sender, EventArgs e)
{
Uri url = new Uri("https://www.bloomberght.com/borsa");
WebClient client = new WebClient();
client.Encoding = System.Text.Encoding.UTF8;
string html = client.DownloadString(url);
HtmlAgilityPack.HtmlDocument document = new HtmlAgilityPack.HtmlDocument();
document.LoadHtml(html);
HtmlNodeCollection nodes = document.DocumentNode.SelectNodes("//a[@id='dolar']/span[@class='data-info']/small[@data-type='son_fiyat']");
foreach (var item in nodes)
{
string link = item.Attributes["class"].Value;
label1.Text = item.InnerText;
listBox1.Items.Add(item.InnerText);
}
}