ODBCConnection.Refresh Method (Excel)
Refreshes an ODBC connection.
Version Added: Excel 2007
expression A variable that represents an ODBCConnection object.
When making the connection to the ODBC data source, Microsoft Excel uses the connection string specified by the Connection property. If the specified connection string is missing required values, dialog boxes will be displayed to prompt the user for the required information. If the DisplayAlerts property is False, dialog boxes are not displayed and the Refresh method fails with the Insufficient Connection Information exception.
After Microsoft Excel makes a successful connection, it stores the completed connection string so that prompts will not be displayed for subsequent calls to the Refresh method during the same editing session. You can obtain the completed connection string by examining the value of the Connection property.
After the database connection is made, the SQL query is validated. If the query is not valid, the Refresh method fails with the SQL Syntax Error exception.
If the query requires parameters, the Parameters collection must be initialized with parameter binding information before the Refresh method is called. If not enough parameters have been bound, the Refresh method fails with the Parameter Error exception. If parameters are set to prompt for their values, dialog boxes are displayed to the user regardless of the setting of the DisplayAlerts property. If the user cancels a parameter dialog box, the Refresh method halts and returns False. If extra parameters are bound with the Parameters collection, these extra parameters are ignored.
The Refresh method returns True if the query is successfully completed or started; it returns False if the user cancels a connection or parameter dialog box.
To see whether the number of fetched rows exceeded the number of available rows on the worksheet, examine the FetchedRowOverflow property. This property is initialized every time the Refresh method is called.