sqlce - how to insert DBNnull into binary column via parameter list

The table was created using the following script:


The SqlCeCommand command text:



Add the parameter:


This code works. Once I executed the command and get the error "Value was either too large or too small for an unsigned byte."

I thought it might be this column even though I couldn't figure out anything else wrong. But later I found the error was caused by another column.