wpf - Retrieve the end position of the caret in the TextBox to put the Caret in the next TextBox -

how find end position of caret in wpf textbox can`t move right anymore caret?

if need find caretindex @ following question.

however, if looking jump next textbox under conditions check out following sample. here use textbox property maxlength , keyup event jump next textbox when 1 completed.

here xaml:

<grid>     <grid.rowdefinitions>         <rowdefinition/>         <rowdefinition/>     </grid.rowdefinitions>     <stackpanel         grid.row="0">         <textbox text="" maxlength="3" keyup="textbox_keyup" >         </textbox>         <textbox text="" maxlength="3" keyup="textbox_keyup">         </textbox>         <textbox text="" maxlength="4" keyup="textbox_keyup">         </textbox>         </stackpanel> </grid> 

here keyup event code-behind:

private void textbox_keyup(object sender, keyeventargs e) {    textbox tb = sender textbox;    if (( tb != null ) && (tb.text.length >= tb.maxlength))    {       int nextindex = 0;       var parent = visualtreehelper.getparent(tb);       int items = visualtreehelper.getchildrencount(parent);       for( int index = 0; index < items; ++index )       {          textbox child = visualtreehelper.getchild(parent, index) textbox;          if ((child != null) && ( child == tb ))          {             nextindex = index + 1;             if (nextindex >= items) nextindex = 0;             break;          }       }        textbox nextcontrol = visualtreehelper.getchild(parent, nextindex) textbox;       if (nextcontrol != null)       {          nextcontrol.focus();       }    } } 

edit:
after reading following answer modified textbox_keyup follows:

  private void textbox_keyup(object sender, keyeventargs e)   {      action<focusnavigationdirection> movefocus = focusdirection =>      {         e.handled = true;         var request = new traversalrequest(focusdirection);         var focusedelement = keyboard.focusedelement uielement;         if (focusedelement != null)            focusedelement.movefocus(request);      };       textbox tb = sender textbox;      if ((tb != null) && (tb.text.length >= tb.maxlength))      {         movefocus(focusnavigationdirection.next);      }   } }