翻页中改变每页记录数后当前页面起始页问题

Main Function:

     /**
     * Calculate the new page index when items per page changed
     *  @param  currentPageIndex Current Page Index
     *  @param  currentRowsPerPage Current Rows Per Page
     *  @param  newRowsPerPage New Rows Per Page
     *  @return  New page index.
      */
     private   int  newPageIndex( int  currentPageIndex,  int  currentRowsPerPage,  int  newRowsPerPage)
    {
         int  currentTopIndex  =  (currentPageIndex - 1 ) * currentRowsPerPage + 1 ;
         int  newPageIndex  =  currentTopIndex % newRowsPerPage  >   0   ?  
                (currentTopIndex / newRowsPerPage) + 1 :
                currentTopIndex / newRowsPerPage;
         return  newPageIndex;
    }

 

 

转载于:https://www.cnblogs.com/zenghanxi/archive/2009/04/17/1437967.html