US 8,078,992 B2 · Rendering a customized list of controls

Abstract

Form controls can be reused so that the control can be bound to large volumes of data without adverse performance issues because of a large number of controls. A maximum number of rows of data N that can appear in a form are calculated. A container in memory is created for N+2 rows. The additional two rows are used to store the row after the last displayed row and the row previous to the first displayed row. In response to a user scroll or tab operation, rows within the container are reused. Child controls are hosted by the control and are also reused when the data is scrolled out of view.

Claims19

Dependent claims

A system for displaying rows of data from a data source comprising:

a processor that displays a form on a display device, the form having N reusable form controls, the reusable form controls displaying rows of data from the data source without a form control for every row of data in the data source being stored in memory, N being a number of the reusable form controls visible on the form on the display device at a particular point in time;
and
the memory, which stores a minimum of N+1 and a maximum of N+2 reusable form controls in a scrollable container before the N rows of data are displayed on the display device, at least one of the form controls that are stored in the scrollable container being configured to be reused to display a next or previous row of data from the data source in response to a user input comprising a tab or scroll operation.

Dependencies are inferred from the claim text.

Rendering a customized list of controls

Life of this patent

Rendering a customized list of controls

Life of this patent

Abstract

Claims19