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上传和下载附件功能

2024-07-11 16:02:06   227人阅读

HTML上传部分 文件名:<asp:TextBox ID="tbFileName" runat="server" Width="150px"></asp:TextBox>文件(80M以内):                                <asp:FileUpload ID="FileUpload2" runat="server" />                                <asp:Button ID="Button1" runat="server" CssClass="buttoncss" Text="上传" OnClick="Button1_Click" />protected void Button1_Click(object sender, EventArgs e)        {            if (FileUpload2.HasFile && ViewState["pid"] != null)            {                string path = Server.MapPath("ATT");                //创建目录                string pid = ViewState["pid"].ToString();                if (!Directory.Exists(path + "/" + pid))                {                    Directory.CreateDirectory(path + "/" + pid);                }                path += "/" + pid;                string filename = "";                if (!string.IsNullOrEmpty(tbFileName.Text))                {                    string hz = FileUpload2.FileName.Substring(FileUpload2.FileName.IndexOf(‘.‘), FileUpload2.FileName.Length - FileUpload2.FileName.IndexOf(‘.‘));                    filename = tbFileName.Text.Trim() + hz;                }                else                {                    string Extension = System.IO.Path.GetExtension(FileUpload2.FileName).ToLower();                    string FileName = FileUpload2.FileName.Substring(0, FileUpload2.FileName.IndexOf(Extension));                    FileName += DateTime.Now.ToString("yyyyMMddhhmmss");                    filename = FileName + Extension;                }                try                {                    FileUpload2.SaveAs(path + "/" + filename);                    //保存信息                    AttachmentModel uam = new AttachmentModel();                    uam.AttFileName = filename.Substring(0, filename.IndexOf(‘.‘));                    uam.ProjectId = Convert.ToInt32(pid);                    uam.AttPath = "ATT/" + pid + "/" + filename;                    LoginUserInfoModel lum = new LoginUserInfoModel();                    lum = (LoginUserInfoModel)Session["LoginUserInfoModel"];                    uam.RecordAccountNoID = lum.LoginUserID;                    if (IPB.SaveATT(uam))                    {                        Page.RegisterClientScriptBlock("TS", "<script>jError(‘上传成功‘, { TimeShown: 1000, VerticalPosition: ‘center‘ });;</script>");                        ShowControl();                    }                    else                    {                        Page.RegisterClientScriptBlock("TS", "<script>jError(‘上传失败‘, { TimeShown: 1000, VerticalPosition: ‘center‘ });;</script>");                    }                }                catch (Exception ex)                {                    throw ex;                }            }            else            {                Page.RegisterClientScriptBlock("TS", "<script>jError(‘请选择文件‘, { TimeShown: 1000, VerticalPosition: ‘center‘ });;</script>");            }        }

绑定显示上传成功的附件：

private void BindATT(string pid)        {            DataTable dt = IPB.GetATT(pid);            string html = "";            if (dt != null && dt.Rows != null && dt.Rows.Count > 0)            {                foreach (DataRow dr in dt.Rows)                {                    html += "<div style=‘float:left;margin-top:10px;clear:both;‘> <a href=http://www.mamicode.com/‘" + GetLink(dr["AttPath"].ToString()) + "‘ target=‘_blank‘ style=‘color:Blue;‘>" + dr["AttFileName"].ToString() + " </a>";                    html += "<a href=http://www.mamicode.com/"javascript:void(0);\" onclick=\"DelAtt(‘" + dr["id"].ToString() + "‘,‘" + HelpBLL.Encode(pid) + "‘);\" style=‘ font-size:12px;‘>删除</a><br/>";                    html += "</div>";                }            }            else            {                html = "<p style=‘color:red;‘>暂无附件</p>";            }            LAttHtml.Text = html;        }

        /// <summary>        /// 获取下载URL        /// </summary>        /// <param name="url"></param>        /// <returns></returns>        public static string GetLink(string url)        {            string str = "Download.aspx?FileName=" + HttpUtility.UrlEncode(url) + "";            return str;        }
 
 
Download.aspx 只有后台代码：
protected void Page_Load(object sender, EventArgs e)        {            if (!IsPostBack)            {                ResponseFile(HttpUtility.UrlDecode(Request.QueryString["FileName"]));            }        }        public void ResponseFile(string fileName)        {            try            {                String FullFileName = HttpContext.Current.Server.MapPath(fileName);                FileInfo DownloadFile = new FileInfo(FullFileName);                Response.Clear();                Response.Expires = 0;                Response.Buffer = true;                Response.Charset = "utf-8";                Response.ContentEncoding = System.Text.Encoding.UTF8;                Response.ContentType = "application/octet-stream";                Response.AppendHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(DownloadFile.FullName, System.Text.Encoding.UTF8));                Response.AppendHeader("Content-Length", DownloadFile.Length.ToString());                Response.TransmitFile(DownloadFile.FullName);                Response.End();            }            catch            {            }        }
 






























        

            
                
                  
                
                

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