This example uses the SaveDocument(DocumentFormat format) and LoadDocument(byte buffer, DocumentFormat format) methods of the SpreadsheetControl to store workbook in the database and retrieve it from there.
The test database is MS SQL local file database. It is included in the project.
To use another database, change the connection string as required and create a new table in that database. Use the script contained in the TestDB_table.sql file to generate a table for the MS SQL Server database.