论坛中有许多用户询问，Spread 能否实现上下标格式。例如：X3
Spread Winform 实现方法：
RichTextBox rtb = new RichTextBox(); rtb.Text = "e=mc2"; rtb.SelectionStart = 4; rtb.SelectionLength = 1; rtb.SelectionCharOffset = Font.Height / 2; rtb.SelectedText = "2"; fpSpread1.ActiveSheet.Cells[0, 0].Renderer = new FarPoint.Win.Spread.CellType.RichTextCellType(); fpSpread1.ActiveSheet.Cells[0, 0].Value = rtb.Rtf;
效果图：
Spread ASP.NET 实现方法：
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack)
{
return;
}
FpSpread1.EncodeValue = false;
FpSpread1.ActiveSheetView.Cells[0, 0].Text = "H<sub>2</sub>0 - Water";
FpSpread1.ActiveSheetView.Cells[1, 0].Text = "H<sup>2</sup>0 - Water";
}
效果图：
