api_datasource.nextrow / api_datasource.previousrow error

Hi,

I noticed with testing nextrow/previousrow procedures in a grid i noticed that both procedures give an error when you reach the last or first record. Error is record 0 does not exist, or record xxx does not exist. Is it possible to check if the record number exists and if it does not exist, just do nothing? I think this would be much more user friendly.

asked 24 Feb '12, 05:37

asdr ♦
99●3●9
accept rate: 8%

One Answer:

oldest newest most voted

Yes, it is possible. nextRow and previousRow APIs raises e_invalidRowNumber exception if the current row is already the last row or the first row. Below is the sample of how to handle exceptions:
begin api_datasource.nextRow('ds1'); exception when api_exception.e_invalidRowNumber then null; end;

link

answered 24 Feb '12, 05:42

Ugur Kocak ♦
561●6
accept rate: 23%

Your answer

toggle preview

community wiki

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here

By RSS:

Answers

Answers and Comments

Markdown Basics

*italic* or _italic_
**bold** or __bold__
link:[text](http://url.com/ "title")
image?![alt text](/path/img.jpg "title")
numbered list: 1. Foo 2. Bar
to add a line break simply add two spaces to where you would like the new line to be.
basic HTML tags are also supported

learn more about Markdown

Tags:

api_datasource ×4
next ×1
nextrow ×1
previous ×1
previousrow ×1