C＃WinForms DataGridView - 选择常量行！

I have a winforms datagridview that seems to always have at least one row selected all the time. I'm not interested in being able to select the rows at all really, I just need the user to be able to select the checkbox in column 1. Any ideas why there is always at least 1 row selected? How can i prevent this? Will it affect the ability to select the checkbox in column1?I have a winforms datagridview that seems to al