文件的上传下载

1.上传

     if (this.FileUpload1.PostedFile != null)
            {
                string strfileName = this.FileUpload1.PostedFile.FileName;
                if (!string.IsNullOrEmpty(strfileName.Trim()))
                {
                    string strLastPath = getSaveImage(strfileName);
                    //保存
                    this.FileUpload1.SaveAs(strLastPath);
                    content.A8 = System.IO.Path.GetFileName(strLastPath);
                }
            }

 

#region

if (this.FileUpload1.PostedFile != null)
                {
                   
                    string strfileName = this.FileUpload1.PostedFile.FileName;
                    string str = strfileName.ToLower().Substring(strfileName.LastIndexOf("."));
                    if (str != ".zip" && str != "rar")
                    {
                        ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "click", "alert('上传文件必须是rar或zip格式的！');", true);
                        return;
                    }
                    if (!string.IsNullOrEmpty(strfileName.Trim()))
                    {
                        string strLastPath = getSaveImage(strfileName);
                        //保存
                        this.FileUpload1.SaveAs(strLastPath);
                        content.A8 = System.IO.Path.GetFileName(strLastPath);
                    }
                }

#endregion

    

#region getSavefile
    /// <summary>
    /// getSaveImage
    /// </summary>
    /// <param name="fileName"></param>
    /// <returns></returns>
    string getSaveImage(string fileName)
    {
        string strGuid = System.Guid.NewGuid().ToString();
        return Server.MapPath("~/ZB_File/") + strGuid + System.IO.Path.GetExtension(fileName);
    }
    #endregion

 

2.下载

WebClient webClient = new WebClient();
        string fileName = Server.MapPath("~/ZB_File/" + Tb_ContentManager.GetContenByLId(Convert.ToInt32(hid_lid.Value)).A8);
        byte[] responseData;
        try
        {
            responseData = webClient.DownloadData(fileName);
        }
        catch
        {
            return;
        }
        Response.Clear();
        Response.ClearHeaders();
        Response.Buffer = false;
        Response.ContentType = System.IO.Path.GetExtension(fileName);
        Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
        Response.AppendHeader("Content-Length", responseData.Length.ToString());
        if (responseData.Length > 0)
        {
            Response.BinaryWrite(responseData);
        }
        Response.Flush();
        Response.End();