打造无刷新文件上传控件


在做一个信息管理平台时用到了图片,就像做一个上传的

  正好用的是asp.net ajax

  就试着做了一个

  不很好

  自定义用户控件文件 PicUpload.ascx

1<%@ control language="C#" autoeventwireup="true" inherits="Admin_PicUpload, App_Web_mboefw14" %>
2&nbsp;<asp:Image ID="EP_Image" runat="server" Height="160px" ImageUrl='<%# Bind("EP_Pic") %>'
3  Width="314px" />
4<br />
5<asp:FileUpload ID="FileUpload1" runat="server" />
6<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="上传" />

  自定义用户控件文件 PicUpload.ascx.cs

1using System;
2using System.Data;
3using System.Configuration;
4using System.Collections;
5using System.Web;
6using System.Web.Security;
7using System.Web.UI;
8using System.Web.UI.WebControls;
9using System.Web.UI.WebControls.WebParts;
10using System.Web.UI.HtmlControls;
11
12public partial class Admin_PicUpload : System.Web.UI.UserControl
13{
14  protected void Page_Load(object sender, EventArgs e)
15  {
16
17  }
18  protected void Button1_Click(object sender, EventArgs e)
19  {
20    bool fileOK = false;
21    //获取根文件绝对路径
22    string path = Server.MapPath("~/UpLoad/");
23    //如上传了文件,就判断文件格式
24    FileUpload FU = FileUpload1;
25    if (FU.HasFile)
26    {
27      string fileExtension = System.IO.Path.GetExtension(FU.FileName).ToLower();
28      string[] allowedExtensions ={ ".gif", ".jpg", ".png", ".bmp", };
29      for (int i = 0; i < allowedExtensions.Length; i++)
30      {
31        if (fileExtension == allowedExtensions[i])
32        {
33          fileOK = true;
34        }
35      }
36    }
37    //调用saveas方法,实现上传文件
38    if (fileOK)
39    {
40      try
41      {
42        FileUpload1.SaveAs(path + System.DateTime.Now.ToString("yyyyMMddhhmmss")+FU.FileName);
43        EP_Image.ImageUrl = "../Upload/" + System.DateTime.Now.ToString("yyyyMMddhhmmss") + FU.FileName;
44        Button1.Text = "上传成功";
45      }
46      finally
47      {
48      }
49    }
50    else
51    {
52      Button1.Text = "上传失败,格式不允许";
53    }
54  }
55}
56

  逐步完成...

 

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