title: WinForms Datagridview: Tag property problem
body: <p>I have a <strong>Winform datagridview</strong>, which is bind to a datatable. After loading the grid, I assign for every row an associated object to the <strong>Tag property</strong>. The problem is now. that after some actions/clicks all Tag properties are <strong>NULL</strong> again. The cell values are still there. What could be the reason for that?</p>