I have a datagridview in c# winforms. In my procedure I am trying to check all rows in the grid. There are two columns in the grid: first column is a check box column and the send one is a regular one. For some reason it does not check the very first row check box in the grid when I run my select all check boxes procedure. Please let me know if it is fixable because to me it looks like a glitch in the grid.