C# 如何通过搜索栏浏览地图？

我问错问题了对不起，让我重新开始

我有一张地图，我想把它附加到一个搜索栏上，这样当你输入一个国家时，地图就会出现在那里

这是我的代码：

var theSelect = searchBar.ToString(); //my searchbars name

        Geocoder gc = new Geocoder ();
        Task<IEnumerable<Position>> result =
            gc.GetPositionsForAddressAsync (theSelect); //i add it here.

        IEnumerable<Position> data = await result;

        foreach (Position p in data) {


            myMap.MapType = MapType.Street; //my map's name
            myMap.MoveToRegion(new MapSpan(//add something here?));

        }

private  void FilterContacts (string filter)
    {
        EmployeeList.BeginRefresh ();

        if (string.IsNullOrWhiteSpace (filter)) {
            System.Diagnostics.Debug.WriteLine ("if1");
            EmployeeList.ItemsSource = ourPitems; //listviews name + class
        } else {
            System.Diagnostics.Debug.WriteLine ("else2");
            EmployeeList.ItemsSource = ourPitems.Where (x => x.irl1.ToLower ().Contains (filter.ToLower ()));

        }

        EmployeeList.EndRefresh ();
    }