ASP.NET文件上传下载

下载文件：string musicUrl = "music/" + Request.QueryString["murl"].ToString();
string fileName = Request.QueryString["murl"].ToString();
string filePath = Server.MapPath(musicUrl);//路径
FileInfo fileInfo = new FileInfo(filePath);
Response.Clear();
Response.ClearContent();
Response.ClearHeaders();
Response.Charset = "gb2312";
Response.AddHeader("Content-Disposition", "attachment;filename=" + Server.UrlEncode(fileName));
Response.AddHeader("Content-Length", fileInfo.Length.ToString());
Response.AddHeader("Content-Transfer-Encoding", "binary");
Response.ContentType = "application/octet-stream";
Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
Response.WriteFile(fileInfo.FullName);
Response.Flush();
Response.End();
这个是下载歌曲到本地的代码。
自己修改下哈。

上传文件：
//获取服务器保存照片路径
filepath1 = Server.MapPath("images");
filename1 = FileUpload2.PostedFile.FileName;
filename1 = filename1.Substring(filename1.LastIndexOf("\\") + 1);
//获取文件类型
fileval1 = filename1.Substring(filename1.LastIndexOf(".") + 1).ToLower();
if (!(fileval1 == "jpg" || fileval1 == "gif"))
{
Response.Write("只能上传：jpg,gif格式！");
return;
}
//给上传的文件以日期命名
refilename = DateTime.Now.ToString("yyyyMMddhhmmss");
try
{
FileUpload2.SaveAs(filepath1 + "\\" + refilename + "." + fileval1);
c = refilename + "." + fileval1;
this.FileUpload2.Enabled = false;
this.Button1.Enabled = false;
this.TextBox2.Text = filepath1 + "\\" + refilename + "." + fileval1;
}
catch
{
RegisterStartupScript("message", "<mce:script type="text/javascript"><!--
alert('上传失败！');
// --></mce:script>");