public Task <JsonNetResult> MyWork()
{
CancellationTokenSource tokenSource = new CancellationTokenSource();
CancellationToken token = tokenSource.Token;
_counter++;
int id = _counter;
CancellationDictionary.Add(id, tokenSource);
System.Diagnostics.Debug.WriteLine("GetGridResult started. Id: {0}, Time {1}", id, DateTime.Now.ToLongTimeString());
return(Task.Factory.StartNew(() => GetGridResult(token), token).ContinueWith(t =>
{
System.Diagnostics.Debug.WriteLine("GetGridResult ended. Id: {0}, Time {1}", id, DateTime.Now.ToLongTimeString());
return new JsonNetResult(t.Result);
}));
}
public JsonNetResult CancelRequest(int?id)
{
JsonModel jsonModel;
try
{
if (!id.HasValue)
{
if (CancellationDictionary.Keys.Count > 0)
{
id = CancellationDictionary.Keys.First();
}
else
{
jsonModel = JsonModel.CreateFailure("There are no requests to cancel");
return(new JsonNetResult(jsonModel));
}
}
if (CancellationDictionary.ContainsKey(id.Value))
{
CancellationDictionary[id.Value].Cancel();
System.Diagnostics.Debug.WriteLine(string.Format("GetGridResult cancelled. Id: {0}, Time {1}", id.Value, DateTime.Now.ToLongTimeString()));
jsonModel = JsonModel.CreateSuccess(string.Format("Request with Id {0} was cancelled", id.Value));
}
else
{
jsonModel = JsonModel.CreateFailure(string.Format("Request with Id {0} was not found", id.Value));
}
}
catch (Exception ex)
{
jsonModel = JsonModel.CreateFailure(ex.Message);
}
return(new JsonNetResult(jsonModel));
}