I have the following task i would love to initialize once the app is running, and just populate a value in my App.xaml.cs
public partial class App : Application
{
public bool ProcessedTask = false;
public List<Item> Items = new List<Item>();
public App()
{
...
// Standard XAML initialization
InitializeComponent();
// NOW HERE I WOULD LIKE TO INVOKE MY TASK
}
public async Task<string> RequestDataTask()
{
HttpClient client = new HttpClient();
Task<string> getStringRequests = client.GetStringAsync("http://test.com/get/");
ItemsRootObject responseObject = Newtonsoft.Json.JsonConvert.DeserializeObject<ItemsRootObject>(getStringRequests);
foreach (Item item in responseObject.rows)
{
Items.Add(item);
}
ProcessedTask = true;
string Message = "Processed Task";
return Message;
}
}
public class ItemsRootObject
{
public List<Item> rows { get; set; }
public bool success { get; set; }
public int code { get; set; }
public string msg { get; set; }
}
public class Item
{
public string value { get; set; }
}
I already know the JSON return and objects are there correctly (works in a regular call), but i don't know (understand) how to invoke my task while keeping the phone app going (load MainPage.xaml).
Anyone can tell how i get my task started asynchronously?
You can use async and await where you need to call the task.
private async void yourFunction(object sender, RoutedEventArgs e)
{
string result = await RequestDataTask();
}
http://msdn.microsoft.com/it-it/library/hh191443.aspx
But if you want to call an async method inside a constructor use something like this:
public partial class App
{
private readonly Task _initializingTask;
public App()
{
_initializingTask = Init();
}
private async Task Init()
{
/*
Initialization that you need with await/async stuff allowed
*/
string result = await RequestDataTask();
}
}
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