C#使用Aspose.Cells导出Excel简单实现

首先，需要添加引用Aspose.Cells.dll，官网下载地址：http://downloads.aspose.com/cells/net

将DataTable导出Xlsx格式的文件下载（网页输出）：

 1 /// <summary>
 2 /// 导出Excel表格
 3 /// </summary>
 4 /// <param name="list">数据集合</param>
 5 /// <param name="header">数据表头</param>
 6 /// <returns></returns>
 7 public void ExportExcel(DataTable dt, string[] header)
 8 {
 9     Workbook wb = new Workbook(FileFormatType.Xlsx);
10     try
11     {
12         Worksheet sheet = wb.Worksheets[0];
13         sheet.Name = "MO上行查询结果";
14         if (dt.Rows.Count <= 0)
15         {
16             System.Web.HttpContext.Current.Response.Write("<script>alert('没有检测到需要导出数据!');</script>");
17             return;
18         }
19         // 为单元格添加样式
20         Aspose.Cells.Style style = wb.CreateStyle();
21         style.HorizontalAlignment = Aspose.Cells.TextAlignmentType.Center;  //设置居中
22         style.Font.Size = 12;//文字大小
23         style.Font.IsBold = true;//粗体
24         style.HorizontalAlignment = TextAlignmentType.Center;//文字居中
25 
26         int rowIndex = 0;
27         for (int i = 0; i < header.Length; i++)
28         {
29             sheet.Cells[rowIndex, i].PutValue(header[i]);
30             sheet.Cells[rowIndex, i].SetStyle(style);
31             sheet.Cells.SetColumnWidth(i, 20);//设置宽度
32         }
33         for (int i = 0; i < dt.Rows.Count; i++)//遍历DataTable行
34         {
35             sheet.Cells[i + 1, 0].PutValue(dt.Rows[i]["SENDER"].ToString());
36             sheet.Cells[i + 1, 1].PutValue(dt.Rows[i]["SENDCONTENT"].ToString());
37             sheet.Cells[i + 1, 2].PutValue("");
38             sheet.Cells[i + 1, 3].PutValue(dt.Rows[i]["RECDATE"].ToString());
39             sheet.Cells[i + 1, 4].PutValue(dt.Rows[i]["sn"].ToString());
40         }
41     }
42     catch (Exception e)
43     {
44         System.Web.HttpContext.Current.Response.Write("<script>alert('导出异常:" + e.Message + "!');</script>");
45     }
46     #region 输出到Excel
47     using (MemoryStream ms = new MemoryStream())
48     {
49 
50         wb.Save(ms, new OoxmlSaveOptions(SaveFormat.Xlsx));//默认支持xls版，需要修改指定版本
51         System.Web.HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}.xlsx", DateTime.Now.ToString("yyyyMMddHHmmssfff")));
52         System.Web.HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
53         System.Web.HttpContext.Current.Response.BinaryWrite(ms.ToArray());
54         wb = null;
55         System.Web.HttpContext.Current.Response.End();
56     }
57     #endregion
58 }

Aspose.Cells.dll 下载地址：http://pan.baidu.com/s/1o8TRXDg

其它相关参考：

https://my.oschina.net/u/876556/blog/98801

http://www.cnblogs.com/top5/archive/2010/02/16/1668801.html

http://www.cnblogs.com/springyangwc/archive/2011/08/12/2136498.html

Aspose.Cells组件可以不依赖excel来导入导出excel文件：

导入：

public static System.Data.DataTable ReadExcel(String strFileName)
{
Workbook book = new Workbook();
book.Open(strFileName);
Worksheet sheet = book.Worksheets[0];
Cells cells = sheet.Cells;

return cells.ExportDataTableAsString(0, 0, cells.MaxDataRow + 1, cells.MaxDataColumn + 1, true);
}

导出：

private static void Export<T>(IEnumerable<T> data, HttpResponse response)
{
Workbook workbook = new Workbook();
Worksheet sheet = (Worksheet)workbook.Worksheets[0];

PropertyInfo[] ps = typeof(T).GetProperties();
var colIndex = "A";

foreach (var p in ps)
{

sheet.Cells[colIndex + 1].PutValue(p.Name);
int i = 2;
foreach (var d in data)
{
sheet.Cells[colIndex + i].PutValue(p.GetValue(d, null));
i++;
}

colIndex = ((char)(colIndex[0] + 1)).ToString();
}

response.Clear();
response.Buffer = true;
response.Charset = "utf-8";
response.AppendHeader("Content-Disposition", "attachment;filename=xxx.xls");
response.ContentEncoding = System.Text.Encoding.UTF8;
response.ContentType = "application/ms-excel";
response.BinaryWrite(workbook.SaveToStream().ToArray());
response.End();
}

非常简单，好用！
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原文链接：https://blog.csdn.net/weiky626/article/details/7514637