Class TPagedList

TPagedList class

TPagedList implements a list with paging functionality.

TPagedList works in one of two modes, managed paging or customized paging, specified by CustomPaging.

• Managed paging (CustomPaging=false) : the list is assumed to contain all data and it will manage which page of data are available to user.
• Customized paging (CustomPaging=true) : the list is assumed to contain only one page of data. An OnFetchData event will be raised if the list changes to a different page. Developers can attach a handler to the event and supply the needed data. The event handler can be written as follows,

    public function fetchData($sender,$param)
    {
      $offset=$param->Offset; // beginning index of the data needed
      $limit=$param->Limit;   // maximum number of data items needed
      // get data according to the above two parameters
      $param->Data=$data;
    }
  

 $count=$list->Count;
 for($index=0;$index<$count;++$index)
     echo $list[$index];
 foreach($list as $index=>$item) // traverse each item in the list

The PageSize property specifies the number of items in each page. To access different page of data in the list, set CurrentPageIndex or call nextPage(), previousPage(), or gotoPage(). The total number of pages can be obtained by PageCount.