TMemDataset.BookmarkValid function

Declaration

function BookmarkValid(ABookmark: TBookMark): Boolean; override

Arguments

Description

BookmarkValid is an overridden Boolean function used to determine if the specified Bookmark is valid. BookmarkValid implements the virtual method defined in the ancestor class.

In TMemDataset, a Bookmark is considered to be valid when it contains an Integer value that represents a record in the in-memory dataset. Bookmarks are zero-based and must be less than the record count for dataset.

The return value is False when ABookmark is unassigned (contains Nil), or True when the preceding conditions are satisfied.