WPF ListBox Paging

        List<listboxitem> llb;//a ListBox data collection that conforms to a condition like public static list<modeldatabase> DataList = new LIST&L T      Modeldatabase> ();//total data source int pageIndex = 1;//current page int pageSize = 16;//one page maximum capacity int totalpage = 0;//Total Pages public void Takepage () {Tbindex.            Text = Pageindex.tostring (); Listbox.itemssource = LLB. Skip ((pageIndex-1) * pageSize). Take (pageSize).        ToList ();            }//Home private void Btnfirst_click (object sender, RoutedEventArgs e) {pageIndex = 1;        Takepage ();             }//Last private void Btnlast_click (object sender, RoutedEventArgs e) {pageIndex = Totalpage;        Takepage ();             }//prev private void Btnprev_click (object sender, RoutedEventArgs e) {if (PageIndex > 1) {PageIndex-= 1;            Takepage (); }}//Next private void Btnnext_click (object sender, RoutedEventArgs e)       {if (PageIndex < totalpage) {pageIndex + = 1;            Takepage ();            }}public list<listboxitem> bounddata (int _pageindex, int _pagesize, string strstring,string sign) {            LLB = new list<listboxitem> ();            List<modeldatabase> Listmodel = null; if (sign. Equals ("1")) {Listmodel = DataList.            FindAll (item = (int) Item._parentid = = Convert.toint64 (strstring)); } else if (sign. Equals ("0")) {Listmodel = DataList. Where (s = = S._modelname.contains (strstring)).            ToList (); } else {Listmodel = DataList. Where (s = = S._modelname = = strstring).            ToList ();                } foreach (Modeldatabase item in Listmodel) {ListBoxItem LBI = new ListBoxItem (); LBi. Horizontalcontentalignment = System.Windows.HorizontalAlignment.center;                StackPanel sp = new StackPanel ();                Image img = new image ();                string url = item._modelurl; Img.                Source = new BitmapImage (new Uri (@url, urikind.relative));                System.Windows.Controls.Label lable = new System.Windows.Controls.Label (); Lable.                Content = Item._modelname; Sp.                Children.add (IMG); Sp.                Children.add (lable); Sp.                Tag = Item._midelremark; LBi.                Content = SP; LBi.                MouseDoubleClick + = Lbi_mousedoubleclick; Llb.            ADD (LBI);            }//Initialize pagination element pageIndex = 1; Tbindex.            Text = Pageindex.tostring (); int count = Listmodel.            count;//total number of data bars if (count% PageSize = = 0) {totalpage = count/pagesize;            } else {totalpage = count/pagesize + 1; } tbmax. Text = totalpage.toString ();            Disableclick (TRUE); Return LLB. Skip (0). Take (pageSize).        ToList (); }

WPF ListBox Paging