public Task<NSObject> RunTransactionAsync (FirestoreUpdateHandler updateHandler)
{
var tcs = new TaskCompletionSource<NSObject> ();
RunTransaction (updateHandler, (result_, error_) => {
if (error_ != null)
tcs.SetException (new NSErrorException (error_));
else
tcs.SetResult (result_);
});
return tcs.Task;
}
public void RunTransaction (FirestoreUpdateHandler updateHandler, TransactionCompletionHandler completion)
{
_RunTransaction (InternalUpdateHandler, completion);
NSObject InternalUpdateHandler (Transaction transaction, IntPtr pError)
{
if (updateHandler == null)
return null;
var result = updateHandler (transaction, out NSError error);
if (error != null)
Marshal.WriteIntPtr (pError, error.Handle);
return result;
}
}
