c# - Check EditText for character count -

i writing android app via xamarin (c#)

i have edittext field. , have check nullorempty.

            if (string.isnullorempty (ulitsa.text) ) {                 toast.maketext (this, "Заполните поле 'Ваша Улица'", toastlength.long).show ();             } 

i want set max , min character filters. min-3, max-6 ,and if user don't have count of characters show toast notification.

how can realize this?

myedittext.addtextchangedlistener(new textwatcher() {             @override             public void ontextchanged(charsequence s, int start, int before, int count) {                 // todo auto-generated method stub             }              @override             public void beforetextchanged(charsequence s, int start, int count, int after) {                 // todo auto-generated method stub             }              @override             public void aftertextchanged(editable s) {                  //here, text length:                 integer len = myedittext.gettext().tostring().length();                 // then, depending on length display toast , want             }         }); 

but can set max length programmatically:

inputfilter[] filterarray = new inputfilter[1]; filterarray[0] = new inputfilter.lengthfilter(6); myedittext.setfilters(filterarray);