Virtual Mode

Virtual mode lets the fpSpread control read in only the amount of data it needs to display the requested rows. Therefore, virtual mode increases responsiveness and conserves system resources.

When the fpSpread control is in virtual mode and the user scrolls through sheet rows, rows are read and stored in a buffer until they are displayed. Spread lets you customize virtual mode to fit your needs: you can specify how many rows are retrieved into the buffer and how many displayed rows are retained in the buffer. In addition, you can customize the scroll bars for use with virtual mode.

For more information about virtual mode, see Using Virtual Mode.