This property can be set if the UITableViewSource.GetHeightForRow(UITableView, Foundation.NSIndexPath) has not been implemented. If the row height is not set explicity the table view uses a default value.

There are performance implications to using UITableViewSource.GetHeightForRow(UITableView, Foundation.NSIndexPath) instead of this property: every time a table view is displayed it calls UITableViewSource.GetHeightForRow(UITableView, Foundation.NSIndexPath) for each of its rows. This can result in poor performance when the table has a large number of rows (for example, 1000 rows or more).

If every row in a table has the same height, use this property. If rows have different heights (for example, they are sized around a variable amount of text) then UITableViewSource.GetHeightForRow(UITableView, Foundation.NSIndexPath) is more appropriate.