/// <summary>
/// Convert a promise to a .Net 4.0 Task for use with the <c>async</c>/<c>await</c> keywords
/// </summary>
public static Task <T> ToTask <T>(this IPromise <T> promise, CancellationToken ct = default(CancellationToken))
{
var tcs = new TaskCompletionSource <T>();
promise.Done(v =>
{
try
{
tcs.TrySetResult(v);
}
catch (Exception ex)
{
tcs.TrySetException(ex);
}
}).Fail(ex =>
{
var cancel = ex as OperationCanceledException;
if (cancel == null)
{
tcs.TrySetException(ex);
}
else
{
tcs.TrySetCanceled();
}
});
if (ct != default(CancellationToken))
{
ct.Register(() =>
{
promise.Cancel();
});
}
return(tcs.Task);
}
private void btnSubmit_Click(object sender, EventArgs e)
{
try
{
if (_currentRun == null)
{
if (_conn == null)
{
outputEditor.Text = "Please select a connection first";
return;
}
btnSubmit.Text = "► Cancel";
outputEditor.Text = "Processing...";
_currentRun = _conn
.Continue(c => _script.Execute(c))
.UiPromise(this)
.Done(s =>
{
outputEditor.Text = s;
_currentRun = null;
})
.Fail(ex => outputEditor.Text = ex.ToString());
}
else
{
btnSubmit.Text = "► Run";
_currentRun.Cancel();
_currentRun = null;
}
}
catch (Exception ex)
{
outputEditor.Text = ex.ToString();
}
}
public bool Cancel()
{
return(_promise.Cancel());
}