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 禁用viewstate在web.config里
- asp.net 虚方法、抽象方法、接口疑问
- c# 操作符?? null coalescing operator
- .net 反序题目的详细解答
- implicitly convert type ''int'' to ''short''的原因与解决方法
- 比较完整的 asp.net 学习流程
- 官网 Ext direct包中.NET版的问题
- C# XML操作 代码大全(读XML,写XML,更新,删除节点,与dataset结合等)
- c# 连接字符串数据库服务器端口号 .net状态服务器端口号
- ASP.NET 路径问题的解决方法
- asp.net TemplateField模板中的Bind方法和Eval方法
- asp.net Web.config 详细配置说明
- asp.net 2个日期之间的整月数的算法
- ASP.Net PlaceHolder、Panel等控件未实现INamingContainer，导致FindControl无效
- Request.RawUrl 属性的应用收
- .net 读取项目AssemblyInfo.cs属性值
- asp.net URL 显示乱码 解决方法
- asp.net 页面之间传递参数的几种方法
- asp.net 一个封装比较完整的FTP类
- C# FTP,GetResponse(),远程服务器返回错误
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: 92 ::
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
