ASP.NET 输出文件(下载文件)几种示例

本文发布于 8 年前,部分内容可能已经失去参考价值。

将字符串作为文本文档输出:

Response.AddHeader("Content-Disposition", "attachment; filename=文件名.txt");
Response.Write(字符串内容);
Response.End();

直接提供服务器文件下载:

FileInfo thefile = new FileInfo(path);
Response.Clear();
Response.ClearHeaders();
Response.Buffer = false;
Response.ContentType = "application/octet-stream";
Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode("刮刮卡参与") + id + ".csv");
Response.AppendHeader("Content-Length", thefile.Length.ToString());
Response.WriteFile(thefile.FullName);
Response.Flush();
Response.End();

输出使用 NPOI 创建的 Excel(MemoryStream):

HSSFWorkbook book = new HSSFWorkbook();
……
MemoryStream ms = new MemoryStream();
book.Write(ms);
Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}.xls", scene.d.drama + " " + scene.s.time_show.ToString("yyyy年MM月dd日HH时mm分")));
Response.BinaryWrite(ms.ToArray());
Response.End();
book = null;
ms.Close();
ms.Dispose();

最后,如果要指定文件编码,加上这句就行:

Response.ContentEncoding = Encoding.xxx;

 

xoyozo 8 年前
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