FpSpread1.ActiveSheetView.Columns[0].Tag = "Column Tag";
TextBox1.Text = FpSpread1.ActiveSheetView.Columns[0].Tag.ToString();
FpSpread1.ActiveSheetView.Columns(0).Tag = "Column Tag"
TextBox1.Text = FpSpread1.ActiveSheetView.Columns(0).Tag.ToString()