HttpPostedFile 如果获取 <input id="file1" type="file" runat="server"> 的id呢 ?

Question

 <input id="file1" name="filename1" type="file" runat="server"> 
//事件        protected void Button1_Click(object sender, EventArgs e)
        {
            HttpPostedFile file;
            for (int i = 0; i < Request.Files.Count; i++)
            {
                file = Request.Files[i];
                //我如果在此 获取 file  的id 或name 属性呢 ??
            }
        }

Answer 1

http://msdn.microsoft.com/zh-cn/library/system.web.httppostedfile(VS.80).aspx
你看看这个吧，里面有例子：protected void Page_Load(object sender, EventArgs e)
{
    if(IsPostBack)
    {
        Boolean fileOK = false;
        String path = Server.MapPath("~/UploadedImages/");
        if (FileUpload1.HasFile) 
        {
            String fileExtension = 
                System.IO.Path.GetExtension(FileUpload1.FileName).ToLower();
            String[] allowedExtensions = 
                {".gif", ".png", ".jpeg", ".jpg"};
          for (int i = 0; i < allowedExtensions.Length; i++)
          {
               if (fileExtension == allowedExtensions[i])
               {
                    fileOK = true;
               }
          }
        }        if (fileOK)
        {
            try
            {
                FileUpload1.PostedFile.SaveAs(path 
                    + FileUpload1.FileName);
                Label1.Text = "File uploaded!";
            }
            catch (Exception ex)
            {
                Label1.Text = "File could not be uploaded.";
            }
        }
        else
        {
            Label1.Text = "Cannot accept files of this type.";
        }
    }
}

Answer 2

http://msdn.microsoft.com/zh-cn/library/system.web.httppostedfile_members(v=VS.80).aspx
HtmlInputFile