Check all rows of datagridview on a click of a checkbox

[Benniit]

Thanks for the previous question, Tlhintoq. It worked like magic!

Now, on a click of a checkbox, I want all the rows to get checked. Is that possible?

Thanks
Ben

[Aimee Bailey]

  for each r as DataGridViewRow in DataGridView1.Rows
    r.cells(0).value = check1.checked
  next r