上传下载文件

 protected void Button1_Click(object sender, EventArgs e)
    {
        //PostedFile获取要上传文件的信息
        if (this.files.PostedFile.FileName.Length == 0)
        {
            Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer>alert('请选择要上传的文件!');</script>");
        }
        else {
                   //判断上传的文件只能为.doc 使用mine类型
            if (Request.Files[0].ContentType == "application/msword")
            {
                //获取上传文件的路径;
                string fileName = this.files.PostedFile.FileName.ToString();
               //找到最后一个"."的字符
                int index = fileName.LastIndexOf(".");
               //取得扩展名.doc
                string name = fileName.Substring(index);
                //设置上传到服务器的名词 一般是秒+文件的大小+扩展名
                string onlondName = DateTime.Now.Second.ToString() + "_" + this.files.PostedFile.ContentLength.ToString() + name;
                //获取上传文件的索引;
                int indexname = fileName.LastIndexOf(@"\")+1;
                //获取上传文件的全名包括扩展名;
                string fileNames = fileName.Substring(indexname);

                bool b = new NobdB().Insertup(fileNames,onlondName);
                if (b)
                {
                                   Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer>alert('上传成功!');</script>");
 
                }
                this.files.PostedFile.SaveAs(Server.MapPath("~/address/"+onlondName)); //上传后保存的路径
            }
            else {
                Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer>alert('请选择要上传的文件的格式为word!');</script>");

            }
        }

 

 

----------------------------------------------------------------------------------------------------------------------

 

<td>
                    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
                        Height="141px" Width="429px">
                        <Columns>
                            <asp:BoundField DataField="id" HeaderText="文件id" />
                           
                            <asp:TemplateField HeaderText="文件名称">
                                <ItemTemplate>
                            <asp:HyperLink ID="HyperLink1" runat="server"
                                        NavigateUrl='<%# "~/address/"+Eval("image1") %>' ><%# Eval("title") %></asp:HyperLink>
                                </ItemTemplate>
    
                            </asp:TemplateField>
                           
                        </Columns>
                     
                    
                    </asp:GridView>
                </td>