Hi,

Thank you for report. That feature was missed. Now it has been implemented and coming service releases will contain that (next one probably will not have it yet).

If you need it urgently, then I can give you "fix" codes which can be used to hack into current implementation. You may use a single function for all editors on page.

<script type="text/javascript">
function initEdit(oEdit)
{
 oEdit.valid = function(v)
 {
    if(!this.msV(v) || this.fcs < 0 || !window.ValidatorOnChange)
      return;
    var ev = this.elemValue, e = this.elem;
    try
    {
       v = ev.Validators;
       e.Validators = v;
       var i = (v && window['Page_InvalidControlToBeFocused'] == null) ? v.length : 0;
       ValidatorOnChange({srcElement:ev});
       while(i-- > 0) if(v[i].focusOnError == 't' && v[i].isvalid === false)
       {
          window['Page_InvalidControlToBeFocused'] = e;
          this.focus();
          break;
       }
    }catch(e){}
 }
}
</script>
<igtxt:WebMaskEdit ID="WebTextEdit1" runat="server">
       <ClientSideEvents Initialize="initEdit" />
</igtxt:WebMaskEdit>