private async void ButtonBase_OnClick(object sender, RoutedEventArgs e)
{
TestButton.IsEnabled = false;
var sb = new StringBuilder();
StockServiceClient proxy = new StockServiceClient();
List<Task> tasks = new List<Task>();
for (int i = 0; i < 5; i++)
{
sb.AppendFormat("{0}: Calling GetPrice", System.DateTime.Now);
sb.AppendLine();
var task = proxy.GetPriceAsync("MSFT")
.ContinueWith(
(prevTask) => sb.AppendFormat("{0}: Price:{1}\n", DateTime.Now, prevTask.Result));
tasks.Add(task);
}
await Task.WhenAll(tasks);
ResTextBox.Text = sb.ToString();
TestButton.IsEnabled = true;
}