WebClient DownloadStringCompleted Never Fired in Console Application
I am not sure why the callback methods are not fired AT ALL. I am using VS 2010.
static void Main(string[] args)
{
try
{
var url = "some link to RSS FE开发者_开发技巧ED";
var client = new WebClient();
client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadStringCompleted);
client.DownloadDataCompleted += new DownloadDataCompletedEventHandler(client_DownloadDataCompleted);
client.DownloadStringAsync(new Uri(url));
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
// THIS IS NEVER FIRED
static void client_DownloadDataCompleted(object sender, DownloadDataCompletedEventArgs e)
{
Console.WriteLine("something");
}
// THIS IS NEVER FIRED
static void client_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
Console.WriteLine("do something");
var rss = XElement.Parse(e.Result);
var pictures = from item in rss.Descendants("channel")
select new Picture
{
Name = item.Element("title").Value
};
foreach (var picture in pictures)
{
Console.WriteLine(picture.Name);
Console.WriteLine(picture.Url);
}
}
The DownloadDataCompleted
event is fired if you call the DownloadDataAsync()
method. DownloadStringCompleted
is fired if you call the DownloadStringAsync()
method.
To get the DownloadDataCompleted event to fire, try:
static void Main(string[] args)
{
try
{
var url = "http://blog.gravitypad.com";
//client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadStringCompleted);
client.DownloadDataCompleted += new DownloadDataCompletedEventHandler(client_DownloadDataCompleted);
client.DownloadDataAsync(new Uri(url));
Console.ReadLine();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
I had this problem and realized that the uri was not correct. I mean the event wont fire unless the file is read correctly. So I placed my xml file in ClientBin and it worked like magic!
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