Displaying data from an SQL Table in a DataGridView, based on the selection of another DataGridView

I am trying to display the ProductCode, DateOpened, DateClosed, and Description columns of a table named "Incidents". Long story short, when you click a row in the "Technicians" DGV, its supposed to display the corresponding columns into the Incidents DGV based on "TechId", both the Incidents and Technicians table share the TechId column.