wpf - XAML Trigger Auto-tab when MaxLength is Reached -

how can incorporate auto-tab when maxlength property reached xaml trigger, datatrigger, propertytrigger, style.trigger, etc. below 2 such options how have accomplished textbox via code-behind. i'm looking apply in xaml style well. thanks.

xaml:

<textbox x:name="mytextbox"             text="{binding path=myproperty}"             style="{staticresource textboxstyle}"             maxlength="5"             textchanged="mytextbox_textchanged"> </textbox> 

code-behind wpf:

private void mytextbox_textchanged(object sender, textchangedeventargs e) {     if (mytextbox.text.length == mytextbox.maxlength)     {         keyboard.focus(nexttextbox);     } }  private void mytextbox_previewkeydown(object sender, keyeventargs e) {     // auto-tab when maxlength reached         if (((textbox)sender).maxlength == ((textbox)sender).text.length)         {             // move focus             var ue = e.originalsource frameworkelement;             e.handled = true;             ue.movefocus(new traversalrequest(focusnavigationdirection.next));         }     } } 

simply in shell.xaml

 <style targettype="textbox">                 <eventsetter event="textchanged" handler="mytextbox_previewkeydown"/>             </style> 

and in shell.xaml.cs

private void mytextbox_previewkeydown(object sender, keyeventargs e) {     // auto-tab when maxlength reached         if (((textbox)sender).maxlength == ((textbox)sender).text.length)         {             // move focus             var ue = e.originalsource frameworkelement;             e.handled = true;             ue.movefocus(new traversalrequest(focusnavigationdirection.next));         }     } }