| public static BeginOnUIThread ( System.Action action ) : void | ||
| action | System.Action | |
| return | void | |
private void btnNonBlockedUIManual_Click(object sender, EventArgs e)
{
txtLog.Clear();
var watch = new Stopwatch();
watch.Start();
// let user know we're working...
statusLabel.Text = "Processing payment...";
// call slow API
Task.Run(() => SlowApiCall.ProcessPayment())
.ContinueWith(prevTask =>
{
var chargeResults = prevTask.Result;
AsyncHelper.BeginOnUIThread(() =>
{
// update UI with results
txtLog.AppendText($"Process Payment Results: {chargeResults}{Environment.NewLine}");
// let user know we're working
statusLabel.Text = "Saving to database...";
});
// call database with results from API
return(SlowDatabase.LogCharge(chargeResults));
}).ContinueWith(prevTask =>
{
// call database with results from API
var dbResults = prevTask.Result;
AsyncHelper.BeginOnUIThread(() =>
{
// update UI
txtLog.AppendText($"Database Results: {dbResults}{Environment.NewLine}");
statusLabel.Text = "DONE!";
txtLog.AppendText($"Done!{Environment.NewLine}{Environment.NewLine}");
watch.Stop();
txtTotalTime.Text = watch.Elapsed.ToString();
});
});
}
public void Execute()
{
_action.BeginInvoke(
iar =>
{
var result = default(T);
try
{
result = _action.EndInvoke(iar);
}
catch (Exception ex)
{
_errorCallback(ex);
return;
}
// post the result back on the UI thread
AsyncHelper.BeginOnUIThread(() => _callback(result));
AsyncHelper.BeginOnUIThread(() => Completed());
}, null);
}