------------------------
Webフォームクラス
------------------------
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
　　If IsPostBack Then
　　　　Return
　　End If

　　Dim cmb1 As New FarPoint.Web.Spread.ComboBoxCellType()
　　cmb1.Items = New String() {"Jan", "Feb", "Mar", "Apr", "May", "Jun"}
　　cmb1.ShowButton = False
　　cmb1.CssClass = "CssStyle1"
　　FpSpread1.ActiveSheetView.Cells(1, 0).CellType = cmb1

　　Dim cmb2 As New FarPoint.Web.Spread.ComboBoxCellType()
　　cmb2.Items = New String() {"1月", "2月", "3月", "4月", "5月", "6月"}
　　cmb2.ShowButton = True
　　cmb2.CssClass = "CssStyle2"
　　FpSpread1.ActiveSheetView.Cells(1, 1).CellType = cmb2
End Sub

-------------------------------
HTML
-------------------------------
<style type="text/css">
.CssStyle1 { color: #FF0000; background-color: #FFFF00 }
.CssStyle2 select{ color: #FFFFFF; background-color: #008000 }
</style>

------------------------
Webフォームクラス
------------------------
protected void Page_Load(object sender, EventArgs e)
{
　　if (Page.IsPostBack)
　　{
　　　　return;
　　}

　　FarPoint.Web.Spread.ComboBoxCellType cmb1 = new FarPoint.Web.Spread.ComboBoxCellType();
　　cmb1.Items = new String[] { "Jan", "Feb", "Mar", "Apr", "May", "Jun" };
　　cmb1.ShowButton = false;
　　cmb1.CssClass = "CssStyle1";
　　FpSpread1.ActiveSheetView.Cells[1, 0].CellType = cmb1;

　　FarPoint.Web.Spread.ComboBoxCellType cmb2 = new FarPoint.Web.Spread.ComboBoxCellType();
　　cmb2.Items = new String[] { "1月", "2月", "3月", "4月", "5月", "6月" };
　　cmb2.ShowButton = true;
　　cmb2.CssClass = "CssStyle2";
　　FpSpread1.ActiveSheetView.Cells[1, 1].CellType = cmb2;
}

-------------------------------
HTML
-------------------------------
※VBと同じです