public void EndGetOperationById(IAsyncResult result)
{
OperationDto operation = OperationsService.EndGetOperationById(result);
OperationViewModel operationVM = Operations.SingleOrDefault(o => o.Operation.Id == operation.Id);
if (operationVM != null)
{
operationVM.Operation = operation;
}
else
{
Operations.Add(new OperationViewModel(operation));
}
InProgress = false;
}