c# 4.0 - wpf mvvm datepicker textbox auto format -

is possible auto format user input date in textbox of datepicker?

i have following code

<style targettype="{x:type datepicker}">     <setter property="foreground" value="{dynamicresource textbrush}"/>     <setter property="istodayhighlighted" value="true"/>     <setter property="selecteddateformat" value="short"/>     <setter property="padding" value="2"/>     <setter property="calendarstyle" value="{dynamicresource datepickercalendarstyle}" /> </style>  <style targettype="{x:type datepickertextbox}">     <setter property="foreground" value="{dynamicresource textbrush}"/>     <setter property="padding" value="2"/>     <setter property="control.template">         <setter.value>             <controltemplate>                 <textbox x:name="part_textbox"  text="{binding path=selecteddate, stringformat='dd/mm/yyyy',   relativesource={relativesource ancestortype={x:type datepicker}}}" />             </controltemplate>         </setter.value>     </setter> </style> 

and in view have

<datepicker height="25" horizontalalignment="left" margin="518,34,0,0" name="datethru" verticalalignment="top" width="115" selecteddate="{binding datethruselected, mode=twoway}" isenabled="{binding datethruisenabled}" > </datepicker> 

so 2 issues. first when enter textbox "030613" or "03062013" , tap through expecting formated "03/06/2013" in textbox of datpicker automatically.

second expecting selecteddate property set "03/06/2013". (if pick date embedded calendar selecteddate binding works fine.)

my current code posted here neither of two. idea how can achieve 2 goals?

thanks in advance!

about first issue :

regex comes mind. ease of use, try using abstract class, , derive it, :

public abstract class datetimeregexpattern {     public abstract datetime datetime { get; }      public abstract bool ismatch(string input); } 

for every pattern want recognized, derive abstract class (could enhanced), , put them in list. whenever textbox's content changes, in order detect pattern applied, use linq.

list<datetimeregexpattern> patterns = new list<datetimeregexpattern>(); // fill list 1 instance of each of derived classes of datetimeregexpattern datetimeregexpattern matching = patterns.firstordefault(x => x.ismatch("030613")); 

then, retrieve datetime, if pattern matches, , apply datepicker, if current date different.

about second issue : http://msdn.microsoft.com/fr-fr/library/system.windows.controls.datepicker.selecteddatechanged.aspx event should trick. when date changes, change textbox's content, if dates different.