Gets or sets a custom driver used to write data to/read data from the current data extract.
An object implementing the ICustomExtractDriver interface that specifies a custom driver.
By default, the DashboardExtractDataSource stores data within a file. If necessary, you add a custom logic for writing/reading extract data by implementing the ICustomExtractDriver interface. After you have implemented a custom driver, you can use it in two ways.
Note that the value of DriverName is saved to the dashboard XML definition. This allows you to determine the driver name when opening the dashboard supplied with data using DashboardExtractDataSource with a custom driver.