多文件上传

最新推荐文章于 2023-07-03 09:29:11 发布

转载最新推荐文章于 2023-07-03 09:29:11 发布 · 513 阅读

文章标签：

#server #textbox #upload #asp #object #button

本文介绍了一个基于 ASP.NET 的多文件上传功能实现方法，通过动态生成文件上传控件并支持批量上传，展示了如何获取文件名、大小及类型，并保存到服务器。

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多文件上传

<body>
    <form id="form1" runat="server">
    <div>
        <asp:Panel ID="Panel1" runat="server" Height="" Width="125px">
            <asp:FileUpload ID="fu" runat="server" />
        </asp:Panel>
        <asp:TextBox ID="tb_Sum" runat="server"></asp:TextBox>
        <asp:Button ID="btn_Add" runat="server" Text="增加" OnClick="btn_Add_Click" />
        <asp:Button ID="btn_Upload" runat="server" Text="上传全部" OnClick="btn_Upload_Click" /></div>
    </form>
</body>

后台代码
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void btn_Add_Click(object sender, EventArgs e)
    {
        FileUpload fu;
        for (int i = 0; i < Convert.ToInt32(tb_Sum.Text); i++)
        {
            fu = new FileUpload();
            fu.ID = "fu_" + i.ToString();
            Panel1.Controls.Add(fu);
        }
    }
    protected void btn_Upload_Click(object sender, EventArgs e)
    {
        string f_Name, f_Size, f_Type;
        HttpFileCollection hfc = Request.Files;
        for (int i = 0; i < hfc.Count; i++)
        {
            HttpPostedFile hpf = hfc[i];
            f_Name = Path.GetFileName(hpf.FileName);
            f_Size = hpf.ContentLength.ToString();
            f_Type = hpf.ContentType;
            hpf.SaveAs(Server.MapPath("../up/") + f_Name);
            Response.Write(f_Name + "<br>" + f_Size + "<br>" + f_Type + "<br>");
        }
    }
}