求代码：C#中使用<em>Epplus</em>读取Excel的一列数据存到D...

poi或jxl都可以生成excel,给你说下抄jxl怎么生成的吧，详细的api你可以从网上下载。
//添加带有formatting的Number对象
jxl.write.NumberFormat nf = new jxl.write.NumberFormat("#.##"); //设置百数字格式
jxl.write.WritableCellFormat wcfN = new jxl.write.WritableCellFormat(nf); //设置表单格式
jxl.write.Number labelNF = new jxl.write.Number(1, 1, 3.1415926, wcfN); //格式化数值
ws.addCell(labelNF); //在表单中添加格式化的数度字

EPPlus 是使用Open Office XML格式e68a84e8a2ad7a64334（xlsx）读写Excel 2007 / 2010文件的.net开发库。
public void Cells_To_Dictionary_Test()
{
//Throw in some data
var datatable = new DataTable("tblData");
datatable.Columns.AddRange(new[] { new DataColumn("Col1", typeof(int)), new DataColumn("Col2", typeof(int)), new DataColumn("Col3", typeof(object)) });

for (var i = 0; i < 10; i++)
{
var row = datatable.NewRow();
row[0] = i;
row[1] = i * 10;
row[2] = Path.GetRandomFileName();
datatable.Rows.Add(row);
}

//Create a test file
var existingFile = new FileInfo(@"c:\temp\Grouped.xlsx");
if (existingFile.Exists)
existingFile.Delete();

using (var pck = new ExcelPackage(existingFile))
{
var worksheet = pck.Workbook.Worksheets.Add("Sheet1");
worksheet.Cells.LoadFromDataTable(datatable, true);
pck.Save();
}

//Load a dictionary from a file
using (var pck = new ExcelPackage(existingFile))
{
var worksheet = pck.Workbook.Worksheets["Sheet1"];

//Cells only contains references to cells with actual data
var cells = worksheet.Cells;
var dictionary = cells
.GroupBy(c => new {c.Start.Row, c.Start.Column})
.ToDictionary(
rcg => new KeyValuePair<int, int>(rcg.Key.Row, rcg.Key.Column),
rcg => cells[rcg.Key.Row, rcg.Key.Column].Value);

foreach (var kvp in dictionary)
Console.WriteLine("{{ Row: {0}, Column: {1}, Value: \"{2}\" }}", kvp.Key.Key, kvp.Key.Value, kvp.Value);
}
}
不可以的，不安装生成不了的！

导出的如果是固定格式，可先设计一个表头，把导出的除了表头部分的复制，粘贴到事先设计好表头的下面。