public Task <IGridData <string> > GetAsync(GridRange gridRange, ISortOrder sortOrder = null)
{
var t = _session.GetGridDataAsync(_evaluation.Expression, gridRange, sortOrder);
if (t == null)
{
// May happen when R host is not running
Trace.Fail(Invariant($"{nameof(VariableViewModel)} returned null grid data"));
return(Task.FromResult <IGridData <string> >(null));
}
return(t);
}
