c＃大神救命

这是一种Writing Large Excel Files with the Open XML SDK 方法，代码是将随机数写入excel中 numRows行,numCols列,现在想斜入一个arraylist,每個list写入一行excel中，应该怎么改啊？
static void WriteRandomValuesSAX(string filename, int numRows, int numCols)
{
using (SpreadsheetDocument myDoc = SpreadsheetDocument.Open(filename, true))
{
WorkbookPart workbookPart = myDoc.WorkbookPart;
WorksheetPart worksheetPart = workbookPart.WorksheetParts.First();
string origninalSheetId = workbookPart.GetIdOfPart(worksheetPart);
WorksheetPart replacementPart =
workbookPart.AddNewPart<WorksheetPart>();
string replacementPartId = workbookPart.GetIdOfPart(replacementPart);
OpenXmlReader reader = OpenXmlReader.Create(worksheetPart);
OpenXmlWriter writer = OpenXmlWriter.Create(replacementPart);
Row r = new Row();
Cell c = new Cell();
CellFormula f = new CellFormula();
f.CalculateCell = true;
f.Text = "RAND()";
c.Append(f);
CellValue v = new CellValue();
c.Append(v);
while (reader.Read())
{
if (reader.ElementType == typeof(SheetData))
{
if (reader.IsEndElement)
continue;
writer.WriteStartElement(new SheetData());
for (int row = 0; row < numRows; row++)
{
writer.WriteStartElement(r);
for (int col = 0; col < numCols; col++)
{
writer.WriteElement(c);
}
writer.WriteEndElement();
}
writer.WriteEndElement();
}
else
{
if (reader.IsStartElement)
{
writer.WriteStartElement(reader);
}
else if (reader.IsEndElement)
{
writer.WriteEndElement();
}
}
}
reader.Close();
writer.Close();
Sheet sheet = workbookPart.Workbook.Descendants<Sheet>()
.Where(s => s.Id.Value.Equals(origninalSheetId)).First();
sheet.Id.Value = replacementPartId;
workbookPart.DeletePart(worksheetPart);
}
}