i want to connect my iPad(8th Generation) to my canon printer

An iPad or iPhone cannot be connected via cable to a printer. They can print to a printer (with AirPrint capabilities) via wifi, if the device AND the printer are connected to the same wifi network.

You can take a look at this list of supported printers:--> About AirPrint - Apple Support

Regards

Giulio

The printer must support AirPrint to work with an iPad.