C#上传 下载 删除 文件列表

    1.文件上传
    ----------
    如下要点：
    HTML部分：
    <form id=\"form1\" runat=\"server\" method=\"post\" enctype=\"multipart/form-data\">
    <input id=\"FileUpLoad\" type=\"file\" runat=\"server\"/><br />
    后台CS部分 按钮事件
    //string strFileFullName = System.IO.Path.GetFileName(this.FileUpLoad.PostedFile.FileName);
    //this.FileUpLoad.PostedFile.SaveAs(Server.MapPath(\"./Xmlzip/\") + strFileFullName);

    2.文件下载
    ----------
    ListBox的SelectedIndexChanged事件 设定相关下载连接
        protected void lst_DownLoadFileList_SelectedIndexChanged(object sender, EventArgs e)
        {
            try
            {
                string strJS = \"window.open(\'Xmlzip/\";
                strJS += this.lst_DownLoadFileList.SelectedItem.Text.Trim();
                strJS += \"\'); return false; \";
                this.imgbtn_DownLoadFile.Attributes.Add(\"onclick\", strJS);
            }
            catch (Exception ex)
            {
                ex.ToString();
            }
        }
    或者也可以通过 改变Label的Text值 来实现点击后实现文件下载的超级连接
    this.Label1.Text = \"<a href=\\\"Xmlzip/a.rar\\\">a.rar</a>\"

    3.文件删除
    ---------
    string strFilePath = Server.MapPath(\"../CountryFlowMgr/Xmlzip/\"+this.lst_DownLoadFileList.SelectedItem.Text.Trim());
    if (File.Exists(strFilePath))
    {
       File.Delete(strFilePath);
       if (File.Exists(strFilePath))
       {
     Response.Write(\"ok\");
       }
       else
       {
            Response.Write(\"ok\");
       }
    }

    4.得到文件夹下的文件列表
    -----------
    #region 得到当前可用的文件列表
        /// <summary>
        /// 得到当前可用的文件列表
        /// </summary>
        /// <param name=\"IsAlert\">是否需要弹出提示信息</param>
        private void fn_getCurrFileList(bool IsAlert)
        {
            try
            {
                //查找Xmlzip文件夹下 属于其本身UnitCoding的相关zip文件
                string strXmlZipDirectory = Server.MapPath(\"../Xmlzip/\");
                if (Directory.Exists(strXmlZipDirectory))
                {
                    //DirectoryInfo di = new DirectoryInfo(Environment.CurrentDirectory);
                    DirectoryInfo di = new DirectoryInfo(strXmlZipDirectory);

                    FileInfo[] FI = di.GetFiles(\"*.zip\");//只查.zip文件
                    if (FI.Length > 0)
                    {
                        lst_DownLoadFileList.Items.Clear();
                        foreach (FileInfo tmpFI in FI)
                        {
                            ListItem tmpItem = new ListItem();
                            tmpItem.Text = tmpFI.Name;
                            lst_DownLoadFileList.Items.Add(tmpItem);
                        }
                        lst_DownLoadFileList.SelectedIndex = 0;
        }
                    else
                    {
                        if (IsAlert)
                        {
                            Response.write(\"查无可以下载的文件!\");
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                ex.ToString();
            }
        }
        #endregion