How Can I have Exposed filter for Taxonomy vocabulary in Heirarchical Select?

Question

I use drupal 7 and simple hierarchical select module for filter views module result by taxonomy terms and taxonomy vocabularies.

my views have results only if select both vocabulary and taxonomy term from select list (exposed filter) .if I select only vocabulary from select list I have no any result for views.

So i want to have a exposed filter that can filter views by vocabulary (all its taxonomy terms) and taxonomy term (sub level of vocabulary) . please see this picture.

Is any other way for filter views result by both vocabulary and terms in heirarchically?

thank you beforehand.

Answer 1

I use the Simple hierarchical select module; in the filter fields, I selected has taxonomy term (with dept) - simple_hierarchical-select and set its value to 1.