繁體中文当前位置: 首页 > 图文教程 > 网络编程 > ASP.NET > ASP.NET FileUpload 上传图片实例
- ASP.NET
- asp.net Linq TO Sql 分页方法
- asp.net 用XML生成放便扩展的自定义树
- asp.ent下合并两个结构相同的DataTable
- asp.net 遍历repeater中的控件的几种方式
- asp.net 处理原文件中过长的viewstate代码
- asp.net下遍历页面中所有的指定控件的代码
- 获取创建Membership的数据库创建脚本
- asp.net AJAX注册类
- asp.net 处理F5刷新页面重复提交页面的一个思路
- ASP.NET 缓存分析和实践浅析提高运行效率
- asp.net 读取并显示excel数据的实现代码
- ASP.NET中常用的用来输出JS脚本的类
- ASP.NET中内嵌页面代码的一个问题
- asp.net(C#)操作excel（上路篇）
- 一个基于Asp.Net MVC的权限方案
- ASP.NET实例教程:51job网站地区选择功能
- ASP.NET教程:友好的Html和JS适合SEO
- ASP.NET教程:使用.ashx文件去除重复内容
- ASP.NET做SEO：制作架构清晰和更新及时的网站地图
- ASP.NET优化:Sql注入和Html注入的黑帽SEO
ASP.NET FileUpload 上传图片实例
出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-09-13 浏览: 102 ::
收藏到网摘: n/a
Add a FileUpload control to the aspx page
复制代码 代码如下:
<table style="width: 100%">
<tr>
<td>
<asp:ValidationSummary ID="ValidationSummary1" runat="server" />
<br />
<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:Button ID="btn_upload" runat="server" OnClick="btn_upload_Click"
Text="Upload" />
<asp:CustomValidator ID="CustomValidator1" runat="server"
ControlToValidate="FileUpload1" Display="Static"
ErrorMessage="You should only can upload image file such as files with .jpg or gif extension"
OnServerValidate="Image_validate">*</asp:CustomValidator>
</td>
</tr>
</table>
Add to code behind cs file
复制代码 代码如下:
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;
using System.Drawing;
public partial class practice_FileUpload : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btn_upload_Click(object sender, EventArgs e)
{
if (Page.IsValid)
{
string path = @Page.MapPath("User_Edit.aspx").Replace("User_Edit.aspx", "") + "Documents\\";
string s = path + Session["UserName"].ToString();
if (!System.IO.Directory.Exists(path + Session["UserName"].ToString()))
{
System.IO.Directory.CreateDirectory(path + Session["UserName"].ToString());
}
if (FileUpload1.HasFile)
{
FileUpload1.SaveAs(Server.MapPath("~/Seeker/Documents/" + Session["UserName"].ToString() + "/" + this.FileUpload1.FileName));
}
}
}
protected void Image_validate(object source, ServerValidateEventArgs args)
{
string fileExt = Path.GetExtension(FileUpload1.FileName).ToLower();
string fileName = Path.GetFileName(FileUpload1.FileName);
if (fileExt != ".jpg" && fileExt != ".gif")
{
args.IsValid = false;
}
}
protected void CustomValidator2_ServerValidate(object source, ServerValidateEventArgs args)
{
Bitmap bmIP = new Bitmap(FileUpload1.PostedFile.InputStream);
if (bmIP.Width > 100 | bmIP.Height > 100)
{
args.IsValid = false;
}
else
{
args.IsValid = true;
}
}
}
The default size of files uploaded by the FileUpload control is 4MB. This solution was found from the Internet。
值得注意的是，FileUpload 默认上传文件最大为4MB。这是在网上找到的。
如果要增加，则可以在Machine.config里面进行修改
复制代码 代码如下:
<httpRuntime
executionTimeout = "110" [in Seconds][number
maxRequestLength = "4096" [number]
requestLengthDiskThreshold = "80" [number]
useFullyQualifiedRedirectUrl = "false" [true|false]
minFreeThreads = "8" [number]
minLocalRequestFreeThreads = "4" [number]
appRequestQueueLimit = "5000" [number]
enableKernelOutputCache = "true" [true|false]
enableVersionHeader = "true" [true|false]
apartmentThreading = "false" [true|false]
requireRootedSaveAsPath = "true" [true|false]
enable = "true" [true|false]
sendCacheControlHeader = "true" [true|false]
shutdownTimeout = "90" [in Seconds][number]
delayNotificationTimeout = "5" [in Seconds][number]
waitChangeNotification = "0" [number]
maxWaitChangeNotification = "0" [number]
enableHeaderChecking = "true" [true|false]
/>
评论 (0) All
