How Many Pagination Pages Do I Need?

Calculating Pagination Pages for Integer Division

When displaying data in a paginated manner, it's essential to determine the number of pages needed to accommodate all the items. This involves using integer division, which truncates the result. However, for pagination, we want to round up the result to ensure no items are omitted.

To round up the result in languages like C# or Java, we can leverage the formula:

(totalRecords recordsPerPage - 1) / recordsPerPage

This formula considers the total number of records (totalRecords) and the desired chunk size (recordsPerPage). It then adds recordsPerPage - 1 to the dividend to achieve rounding up.

Example:

Suppose we have 250 items we want to display in chunks of 10 per page. Using the formula:

pageCount = (250 10 - 1) / 10
pageCount = 26

Therefore, we would require 26 pages to display all the items in chunks of 10 per page.

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