Проверка через каждую ячейку в DGV VBNet
For Each Row As DataGridViewRow In Me.MyDataGridView.Rows
For i = 0 To Row.Cells.Count - 1
Next
Next
Salty Joe
For Each Row As DataGridViewRow In Me.MyDataGridView.Rows
For i = 0 To Row.Cells.Count - 1
Next
Next