用NPOI生成包含富文本字符串（Rich Text String)的单元格
作者： Ken Yang
NPOI允许用户生成包含有富文本字符串的单元格。换句话说，你可以为同一个单元格内的字符串的不同部分设置不同的字体、颜色、下划线等等。
Imports System.IO
Imports NPOI.HSSF.UserModel
Imports NPOI.HPSF
Imports NPOI.HSSF.Util
Imports NPOI.POIFS.FileSystem
Imports NPOI.SS.UserModel
Module Module1
Sub Main()
Dim workbook As HSSFWorkbook = New HSSFWorkbook()
Dim dsi As DocumentSummaryInformation = PropertySetFactory.CreateDocumentSummaryInformation
dsi.Company = "Company Name"
Dim si As SummaryInformation = PropertySetFactory.CreateSummaryInformation
si.Author = "Ken Yang"
si.Subject = "Generating Rich Text String using NPOI"
Workbook.DocumentSummaryInformation = dsi
Workbook.SummaryInformation = si
Dim ws As Sheet = workbook.CreateSheet("sheet1")
Dim r1 As Row = ws.CreateRow(0)
Dim a1 As Cell = r1.CreateCell(0)
ws.SetColumnWidth(0, 4000)
r1.HeightInPoints = 51
Dim style = workbook.CreateCellStyle()
style.WrapText = True
a1.CellStyle = style
'设置富文本字符串
Dim rts As HSSFRichTextString = New HSSFRichTextString("Red String." + vbLf + "Bold Text" + vbLf + "Strikeout Text" + vbLf + "Normal Text")
'设置红色字体
Dim redFont As HSSFFont = workbook.CreateFont()
redFont.Color = HSSFColor.RED.index
'设置粗体
Dim boldFont As HSSFFont = workbook.CreateFont
boldFont.Boldweight = 700
'设置删除线
Dim strikeoutFont As HSSFFont = workbook.CreateFont()
strikeoutFont.IsStrikeout = True
'设置富文本字符串的字体
rts.ApplyFont(0, 11, redFont)
rts.ApplyFont(12, 21, boldFont)
rts.ApplyFont(22, 36, strikeoutFont)
'将富文本字符串赋给A1单元格
a1.SetCellValue(rts)
Dim file As FileStream = New FileStream("e:\text.xls", FileMode.Create)
workbook.Write(file)
End Sub
End Module
效果截图：
