Question

I use XmlTextReader reader to get some data online.

During this stage application is like blocked.

I have tried to use BeginInvoke but it doesn’t help a lots.

Or may be I need to implemented some kined of COMPLETED action….

I don’t know…

Any clue how to resolve it?

Thank you!

var searchUrl = "http://weather.service.msn.com/find.aspx?outputview=search&src=vista&weasearchstr=" + query;
// Application is blocked here
var reader = new XmlTextReader(searchUrl);

while (reader.Read())
{

Answer 1

If you are using c# 5.0, async/await can help here

public async void SOQuestion(string query)
{
    var searchUrl = "http://weather.service.msn.com/find.aspx?outputview=search&src=vista&weasearchstr=" + query;

    WebClient wc = new WebClient();
    string xml = await wc.DownloadStringTaskAsync(searchUrl);

    var xDoc = XDocument.Parse(xml);

    var results = xDoc.Descendants("weather")
                        .Select(w => new
                        {
                            Location = w.Attribute("weatherlocationname").Value,
                            Temp = w.Element("current").Attribute("temperature").Value,
                            SkyText = w.Element("current").Attribute("skytext").Value,

                        })
                        .ToList();

    dataGridView1.DataSource = results;
}