Question

In my WP7 application I loade some simple text data from the web.

 string url = "home url";

 var request = HttpWebRequest.Create(url);

 var result = (IAsyncResult)request.BeginGetResponse(ResponseCallback, request);

And this is how I consume the data

private void ResponseCallback(IAsyncResult result)
{
    var request = (HttpWebRequest)result.AsyncState;
    var response = request.EndGetResponse(result);

    using (var stream = response.GetResponseStream())
    using (var reader = new StreamReader(stream))
    {
        var contents = reader.ReadToEnd();

        Dispatcher.BeginInvoke(()=>
            {
                someLabelValue.Text = contents;
            });
    }
}

I added a indeterminate progress bar to my layout. Now I want to display it when my application is loading the data from the web.

How can I do that? Any ideas?

Answer 1

Simplest way, to see it working is to go and change the .Visiblility of the progress bar to Visible when you make the call (top code extract) and call .Visibility = Collapsed when it’s done (in the second sample, inside your BeginInvoke() block).