XPQueryExtensions.SingleAsync Method

Name	Parameters	Description
SingleAsync<T>(IQueryable<T>, Expression<Func<T, Boolean>>, CancellationToken) static	query, predicate, cancellationToken	Asynchronously gets the object from a selection if only one object in the selection meets the specified requirements. Otherwise, throws an exception.
SingleAsync<T>(IQueryable<T>, CancellationToken) static	query, cancellationToken	Asynchronously gets the object from a selection if this selection has only one object. Otherwise, throws an exception.