If ViewOPERAZIONIDataGridView.Columns(e.ColumnIndex).Name = "DataGridViewCheckBoxColumn1" Then
            If (e.Value) = False Then
                e.CellStyle.BackColor = Color.Orange
            Else
                e.CellStyle.ForeColor = ViewOPERAZIONIDataGridView.DefaultCellStyle.BackColor
            End If
        End If

        If ViewOPERAZIONIDataGridView.Columns(e.ColumnIndex).Name = "DataGridViewTextBoxColumn4" Then
            If (e.Value) > DateTime.Today() Then
                e.CellStyle.ForeColor = Color.Orange
            Else
                e.CellStyle.ForeColor = ViewOPERAZIONIDataGridView.DefaultCellStyle.ForeColor
            End If
        End If

    End Sub