asp.net 实现文件上传和下载

来源：中国IT实验室 作者：佚名 发表于：2013-01-30 10:43　 点击：

FileInfo Fi = new FileInfo(filePath); if (Fi.Exists) { FileStream fs = new FileStream(filePath, FileMode.Open); byte[] bytes = new byte[(int)fs.Length]; fs.Read(bytes, 0, bytes.Length); fs.Close(); Response.ContentType = application/octet-s

FileInfo Fi = new FileInfo(filePath);　　if (Fi.Exists)

　　{

　　FileStream fs = new FileStream(filePath, FileMode.Open);

　　byte[] bytes = new byte[(int)fs.Length];

　　fs.Read(bytes, 0, bytes.Length);

　　fs.Close();

　　Response.ContentType = "application/octet-stream";

　　Response.AddHeader("Content-Disposition", "attachment; filename=1.excel");

　　Response.BinaryWrite(bytes);

　　Response.Flush();

　　Response.End();

　　}

　　string path = Server.MapPath("~/") + "";

　　Response.AppendHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(obj.Name, System.Text.Encoding.GetEncoding("utf-8")));

　　Response.ContentType = "application/octet-stream";

　　Response.WriteFile("" + path + "");

　　Response.End();

　　if (fileUpload.HasFile)

　　{

　　string savePath = Server.MapPath("~/upload/");

　　if(!System.IO.Directory.Exists(savePath))

　　{

　　System.IO.Directory.CreateDirectory(savePath);

　　}

　　savePath = savePath + "\\" + fileUpload.FileName;

　　fileUpload.SaveAs(savePath);

　　}

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