How do I must declare a SerchView.QueryTextSubmit delegate ?

`SearchView mSearchView = FindViewById (Resource.Id.searchView1);

        mSearchView.QueryTextSubmit += delegate (object sender, EventArgs e ){


        };`

But this not compile. I got an error on EventArgs , I need to declare a QueryTextSubmitEvebtArgs, but.... Where do I found SearchView.QueryTextSubmitEventArgs ? Thanks, Max