asp.net实现上载的有关问题

asp.net实现下载的问题
数据库中路径存的是这样的:/upload/2012/7/26/R_SFTM-CF_2011083002030724.xls
要实现在前台点击按钮下载文件
我在项目里用LinkButton还是用hyperlink呢?
赋值的时候是直接赋查出来的路径呢？
还是查出来的路径要做些处理呢？

[解决办法]
路径就用相对的,如果你不希望下载时被用户看到你的实际路径 就在后台处理下载
HyperLink 就是一个普通A标记 如果直接赋值是可以看到附件位置
LinkButton 也是A标记不过有点击事件会 回发到后台 
我给你一个后台下载的代码

C# code

 protected void btnTest_Click(object sender, EventArgs e) {        DownLoadFile("~/template.txt");    }    /// <summary>    /// 下载文件    /// </summary>    /// <param name="fileName"></param>    protected void DownLoadFile(string fileName) {        try {            string FullFileName = Server.MapPath(fileName);            //FileName--要下载的文件名             FileInfo DownloadFile = new FileInfo(FullFileName);            if (DownloadFile.Exists) {                Response.Clear();                Response.ClearHeaders();                Response.Buffer = false;                Response.ContentType = "application/octet-stream";                Response.AppendHeader("Content-Disposition", "attachment;filename=" + ToHexString(DownloadFile.Name));                Response.AppendHeader("Content-Length", DownloadFile.Length.ToString());                Response.WriteFile(DownloadFile.FullName);                Response.Flush();                Response.End();            }        } catch {        }    }    /// <summary>    /// 为字符串中的非英文字符编码    /// </summary>    /// <param name="s"></param>    /// <returns></returns>    public string ToHexString(string s) {        char[] chars = s.ToCharArray();        StringBuilder builder = new StringBuilder();        for (int index = 0; index < chars.Length; index++) {            bool needToEncode = NeedToEncode(chars[index]);            if (needToEncode) {                string encodedString = ToHexString(chars[index]);                builder.Append(encodedString);            } else {                builder.Append(chars[index]);            }        }        return builder.ToString();    }    /// <summary>    ///指定 一个字符是否应该被编码    /// </summary>    /// <param name="chr"></param>    /// <returns></returns>    private bool NeedToEncode(char chr) {        string reservedChars = "$-_.+!*'(),@=&";        if (chr > 127)            return true;        if (char.IsLetterOrDigit(chr) || reservedChars.IndexOf(chr) >= 0)            return false;        return true;    }    /// <summary>    /// 为非英文字符串编码    /// </summary>    /// <param name="chr"></param>    /// <returns></returns>    private string ToHexString(char chr) {        UTF8Encoding utf8 = new UTF8Encoding();        byte[] encodedBytes = utf8.GetBytes(chr.ToString());        StringBuilder builder = new StringBuilder();        for (int index = 0; index < encodedBytes.Length; index++) {            builder.AppendFormat("%{0}", Convert.ToString(encodedBytes[index], 16));        }        return builder.ToString();    }