private async void btnRead_Click(object sender, EventArgs e)
{
if (String.IsNullOrWhiteSpace(tbURL.Text))
{
MessageBox.Show("The URL must not be empty");
return;
}
tbURL.Enabled = false;
btnRead.Enabled = false;
try
{
Product = await Yuppo.ReadProductTaskAsync(tbURL.Text);
tbOrgName.Text = Product.Name;
tbAlbumName.Text = Product.Name;
tbAlbumName.Enabled = true;
btnDone.Enabled = true;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public static async Task<Product> ReadProductTaskAsync(string url)
{
using (WebClient client = new WebClient())
{
client.Encoding = Encoding.UTF8;
client.Headers.Add("Accept-Language", "en-US,en;q=0.5");
String content = await DownloadStringTaskAsync(client, UpgradeUri(url), NUMBER_OF_TRIES);
Product prod = new Product();
Match m1 = reProductName.Match(content);
if (m1.Success)
{
prod.Name = m1.Groups[1].Value;
}
else
{
throw new Exception("Missing product name");
}
Match mNext = null;
do
{
// read photos
MatchCollection mc = rePhotos.Matches(content);
foreach (Match m2 in mc)
{
Photo photo = new Photo()
{
Url = m2.Groups[1].Value.Replace("square.jpg", "big.jpg"),
Name = m2.Groups[2].Value
};
prod.Photos.Add(photo);
}
// check existence of the next page
mNext = reNext.Match(content);
if (mNext.Success)
{
// fetch contents of the next page
content = await DownloadStringTaskAsync(client, UpgradeUri("http://v.yupoo.com" + mNext.Groups[1].Value), NUMBER_OF_TRIES);
}
} while (mNext.Success);
return prod;
}
}