ASP.NET上传文件函数

public static string fileUpladPost(string spath)
    {
        HttpFileCollection files = HttpContext.Current.Request.Files;

        StringBuilder strMsg = new StringBuilder();

        for (int i = 0; i < files.Count; i++)
        {
            HttpPostedFile f = files[i];

            string fileName = Path.GetFileName(f.FileName);

            if (fileName != String.Empty)
            {
                string fileExtension = Path.GetExtension(fileName);
                strMsg.Append("上传的文件类型：" + f.ContentType.ToString() + "<br>");
                strMsg.Append("客户端文件地址：" + f.FileName + "<br>");
                strMsg.Append("上传文件的文件名：" + fileName + "<br>");
                strMsg.Append("上传文件的扩展名：" + fileExtension + "<br><hr>");

                f.SaveAs(HttpContext.Current.Server.MapPath(spath) + fileName);
            }
        }

        return strMsg.ToString();
    }
//该函数可以处理POST过来的FILE，spath为存储路径