asp.net网站中上传文件代码

using System;

using System.Collections;

using System.Configuration;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

using System.IO;

 if (this.txtDescript.Text != "")

        {

            if (FileUpLoad1.HasFile)

            {

                //判断文件是否小于10Mb  

                if (FileUpLoad1.PostedFile.ContentLength < 10485760)

                {

                    try

                    {

                        //上传文件并指定上传目录的路径  

                        FileUpLoad1.PostedFile.SaveAs(Server.MapPath("~/UpLoad/")

                            + FileUpLoad1.FileName);

                        /*注意->这里为什么不是:FileUpLoad1.PostedFile.FileName 

                        * 而是:FileUpLoad1.FileName? 

                        * 前者是获得客户端完整限定(客户端完整路径)名称 

                        * 后者FileUpLoad1.FileName只获得文件名. 

                        */

                        //当然上传语句也可以这样写(貌似废话):  

                        //FileUpLoad1.SaveAs(@"D:\"+FileUpLoad1.FileName);  

                        //获取客户端要上传的文件路径

                        string fullfilename = this.FileUpLoad1.PostedFile.FileName;

                        //获取客户端要上传的文件名

                        string filename = fullfilename.Substring(fullfilename.LastIndexOf("\\") + 1);

                        //文件的相对路径

                        string RelativePath = "\\UpLoad\\" + filename;

                        //绝对路径

                        //operation.InsertSoft(ddlTitle.SelectedItem.ToString().Trim(),filename,fullfilename, txtDescript.Text.ToString().Trim(),false,DateTime.Now.ToString());

                        //相对路径

                        operation.InsertSoft(ddlTitle.SelectedItem.ToString().Trim(), filename, RelativePath, txtDescript.Text.ToString().Trim(), false, DateTime.Now.ToString());

                        //lblMessage.Text = "上传成功!";

                        Page.ClientScript.RegisterStartupScript(Page.GetType(), "", "<script>if(confirm('上传成功！是否继续上传？')){location.href='UpLoad.aspx'}else{location.href='Welcome.aspx'}</script>");

                    }

                    catch (Exception ex)

                    {

                        lblMessage.Text = "出现异常,无法上传!";

                        lblMessage.Text += ex.Message;  

                    }

                }

                else

                {

                    lblMessage.Text = "上传文件不能大于10MB!";

                }

            }

            else

            {

                lblMessage.Text = "尚未选择文件!";

            } 

        }

        else

        {

            lblMessage.Text = "文件描述不能为空!";

        }