/**
  * Create and setup QListBox lstDatagrid
  * @param string $strControlId optional ControlId to use
  * @param QQCondition $objConditions override the default condition of QQ::All() to the query, itself
  * @param QQClause[] $objOptionalClauses additional optional QQClause object or array of QQClause objects for the query
  * @return QListBox
  */
 public function lstDatagrid_Create($strControlId = null, QQCondition $objCondition = null, $objOptionalClauses = null)
 {
     $this->lstDatagrid = new QListBox($this->objParentObject, $strControlId);
     $this->lstDatagrid->Name = QApplication::Translate('Datagrid');
     $this->lstDatagrid->Required = true;
     if (!$this->blnEditMode) {
         $this->lstDatagrid->AddItem(QApplication::Translate('- Select One -'), null);
     }
     // Setup and perform the Query
     if (is_null($objCondition)) {
         $objCondition = QQ::All();
     }
     $objDatagridCursor = Datagrid::QueryCursor($objCondition, $objOptionalClauses);
     // Iterate through the Cursor
     while ($objDatagrid = Datagrid::InstantiateCursor($objDatagridCursor)) {
         $objListItem = new QListItem($objDatagrid->__toString(), $objDatagrid->DatagridId);
         if ($this->objDatagridColumnPreference->Datagrid && $this->objDatagridColumnPreference->Datagrid->DatagridId == $objDatagrid->DatagridId) {
             $objListItem->Selected = true;
         }
         $this->lstDatagrid->AddItem($objListItem);
     }
     // Return the QListBox
     return $this->lstDatagrid;
 }