图片无刷新上传

来源：互联网发布：c语言函数的调用编辑：程序博客网时间：2024/04/28 16:54

function upFile

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01.function upFile(ob)
02.{
03.    var file = document.getElementById(ob) ;
04.    var newName = "FileName";     //设置文件保存的名字
05.
06.    var form=document.createElement('form');
07.    document.body.appendChild(form);
08.    form.encoding="multipart/form-data";
09.    form.method = "post";
10.    form.action= "accept.aspx?nm=" + newName;
11.    form.target= "hidden_frame";
12.    var pos=file.nextSibling; //记住file在旧表单中的的位置
13.    form.appendChild(file);
14.    form.submit();
15.    pos.parentNode.insertBefore(file,pos);
16.    document.body.removeChild(form);
17.}
function upFile(ob)
{
    var file = document.getElementById(ob) ;
    var newName = "FileName";     //设置文件保存的名字

    var form=document.createElement('form');
    document.body.appendChild(form);
    form.encoding="multipart/form-data";
    form.method = "post";
    form.action= "accept.aspx?nm=" + newName;
    form.target= "hidden_frame";
    var pos=file.nextSibling; //记住file在旧表单中的的位置
    form.appendChild(file);
    form.submit();
    pos.parentNode.insertBefore(file,pos);
    document.body.removeChild(form);
}

accept.aspx

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01.<%@ Page Language="C#" AutoEventWireup="true" CodeFile="up.aspx.cs" Inherits="Member_up" %>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="up.aspx.cs" Inherits="Member_up" %>

accept.aspx.cs

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01.using System;
02.using System.Data;
03.using System.Configuration;
04.using System.Collections;
05.using System.Web;
06.using System.Web.Security;
07.using System.Web.UI;
08.using System.Web.UI.WebControls;
09.using System.Web.UI.WebControls.WebParts;
10.using System.Web.UI.HtmlControls;
11.
12.
13.public partial class Member_up : System.Web.UI.Page
14.{
15.    protected void Page_Load(object sender, EventArgs e)
16.    {
17.        string mz = HttpContext.Current.Request.QueryString["nm"].ToString();
18.        string uperr = "";
19.        HttpFileCollection files = HttpContext.Current.Request.Files;
20.
21.        if (files.Count>0)
22.        { uperr = upSingleFile(files[0], mz); }
23.        else { uperr = "ok"; }
24.        HttpContext.Current.Session["upInfo"] = uperr;
25.        Response.Write(uperr);
26.    }
27.
28.
29.    //上传文件
30.    private string upSingleFile(HttpPostedFile file, String theFileName)
31.    {
32.        string infos = "";
33.        bool fileOK = false;
34.
35.        string fileName, fileExtension ;
36.        fileName = System.IO.Path.GetFileName(file.FileName);
37.        if (fileName != "")
38.        {
39.            if (file.ContentLength >= 1024 * 1024 * 2)
40.            {
41.                infos = "上传文件太大，目前仅支持2M以内的图片上传！";
42.            }
43.            else
44.            {
45.                fileExtension = System.IO.Path.GetExtension(fileName).ToLower();
46.                String[] allowedExtensions = { ".jpg", ".jpeg", ".gif", ".bmp", ".png", ".icon" };
47.                for (int i = 0; i < allowedExtensions.Length; i++)
48.                {
49.                    if (fileExtension == allowedExtensions[i])
50.                    {
51.                        fileOK = true;
52.                        break;
53.                    }
54.                }
55.                if (!fileOK)
56.                {
57.                    infos = "不支持上传此类型文件！目前支持的图片格式有：jpg|jpeg|gif|bmp|png|icon";
58.                }
59.                else
60.                {
61.                    file.SaveAs(System.Web.HttpContext.Current.Request.MapPath("~/books/BookPic/") + theFileName);
62.                    infos = "ok" + theFileName;
63.                }
64.            }
65.        }
66.        else
67.        {
68.            infos = "没有读取到文件！";
69.        }
70.        return infos;
71.    }
72.}

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/duanbukui/archive/2009/06/14/4265575.aspx