Performance Considerations for All Forms

When you create forms, consider the recommended performance guidelines, which ensure that the forms perform optimally.

Use these guidelines as standards to increase performance for all form types:

• Limit the number of columns in the grid to the minimum that is required by the application.

• Limit the number of columns in the business view to the minimum that is required by the application.

• Limit the number of form controls, whether hidden or visible, to the minimum needed by the application.

• Use event rule variables as work fields instead of hidden form controls.

• On form and grid controls, disable the data dictionary functions that are not required, such as edits and default values.

  This guideline applies to both hidden and visible controls.

• Limit the amount of input and output performed for each grid row to the minimum that is required for the application.

• Use the Stop Processing system function whenever feasible to skip the processing of unnecessary event rules.

• For temporary data storage, use the most efficient method that is available at the time.

  For example, consider the relative efficiency of cache, linked lists, and work files.

• If performance diminishes when you load data into a form, use media object system functions to edit and display attachments instead of enabling automatic media object functionality.

  When you use media object system functions, you do not need to verify whether an attachment exists before you can display a bitmap. When you use automatic media object functionality, you must verify whether an attachment exists before you display a bitmap.