ios - didSelectRowAtIndexPath index path with uisearchcontroller -

i have application when user clicks on cell open viewcontroller , add uisearchcontroller on tableview.

when searching on tableview result correct , when click on cell after filtering , opens wrong page.

my problem don't how identify indexpath when uiviewcontroller active make result open correct page

   func tableview(tableview: uitableview, didselectrowatindexpath indexpath: nsindexpath) {          indexpathrow = indexpath.row           performseguewithidentifier("toview2", sender: self) } 

edit

i solved problem adding new variable in struct of type integer , modify didselectrowatindexpath function

   func tableview(tableview: uitableview, didselectrowatindexpath indexpath: nsindexpath) {  if resultsearchcontroller.active && resultsearchcontroller.searchbar.text != ""{        indexpathrow = filtereddata[indexpath.row].i     }      else {         indexpathrow = indexpath.row      }      performseguewithidentifier("toview2", sender: self)      } 

a better way selected item, call indexpathforselectedrow() method inside of segue delegate

func tableview(tableview: uitableview, didselectrowatindexpath indexpath: nsindexpath) {     performseguewithidentifier("toview2", sender: self) }  override func prepareforsegue(segue: uistoryboardsegue, sender: anyobject?) {     if segue.identifier == "toview2" {         let indexpath = self.tableview.indexpathforselectedrow() {             print("indexpathrow =  \(indexpath.row)")             //destination controller code goes here ...         }     } }