次のサンプルコードは、指定したタグを持つシートの列を取得します。
FarPoint.Win.Spread.SheetView sv;
FarPoint.Win.Spread.Column col;
sv = fpSpread1.ActiveSheet;
sv.Columns[2].Tag = "MyTag";
acell = sv.GetColumnFromTag(null, "MyTag");
col.BackColor = Color.Yellow;
Dim sv As FarPoint.Win.Spread.SheetView
Dim col As FarPoint.Win.Spread.Column
sv = FpSpread1.ActiveSheet
sv.Columns(2).Tag = "MyTag"
col = sv.GetColumnFromTag(Nothing, "MyTag")
col.BackColor = Color.Yellow