using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Drawing;
using System.Drawing.Design;
namespace Yingnet.Common
{
///
/// FileUpload 的摘要说明。E:\program\Common\FileUpload.bmp
///
[ToolboxBitmap(typeof(Yingnet.Common.FileUpload), "FileUpload.bmp"),
DefaultProperty("Text"), DefaultEvent("Click"),
ToolboxData("<{0}:FileUpload runat=server>")]
public class FileUpload : System.Web.UI.WebControls.WebControl {
///
/// 上传按钮
///
private Button button=new Button();
///
/// 上传文件个数
///
private int filenum=1;
///
/// File对象
///
private HtmlInputFile[] file;
///
/// 保存路径，默认为系统的临时目录
///
private string path=System.IO.Path.GetTempPath();
///
/// 上传的文件名组
///
private string[] filename;
///
/// 后缀文件名组
///
private string[] suffix;
///
///过滤器，写法是.txt;.abc
///
private string filter="";
///
/// 限制文件上传大小，为0是不限制，单位是字节
///
private int size=0;//System.ComponentModel.DefaultEventAttribute
///
/// 上传事件
///
[Bindable(true),Category("事件"),Description("上传后激发的事件")
]
public event EventHandler Click;
///
/// 上传文件数
///
[Bindable(true),
Category("参数"),Description("设定上传文件的个数"),
DefaultValue("1")]
public int FileNum{
set{
if(value<1){
value=1;
}
filenum=value;
this.Controls.Clear();
file=new HtmlInputFile[filenum];
filename=new string[filenum];
suffix=new string[filenum];
for(int i=0;i file[i]=new HtmlInputFile(); this.Controls.Add(file[i]); } this.Controls.Add(button); } get{ return filenum; } } /// /// 上传按钮的文本 /// [Bindable(true), Category("参数"), Description("设定上传文件的路径"), DefaultValue("1")] /// /// 上传路径 /// public string UploadPath { set{ if("".Equals(value)||value==null){ value=System.IO.Path.GetTempPath(); } path=value; } get{ return path; } } /// /// 得到文件名 /// public string[] Filename{ get{ return filename; } } /// /// 得到后缀 /// public string[] Suffix{ get{ return suffix; } } /// /// 过滤器 /// public string Filter{ set{ filter=value; } get{ return filter; } } /// /// 限制大小 /// public int FileSize{ set{ size=value; } get{ return size; } } /// /// 快捷键 /// public override string AccessKey{ get{ return button.AccessKey; } set{ button.AccessKey=value; } } /// /// 背景 /// public override System.Drawing.Color BackColor{ get{ return button.BackColor; } set{ button.BackColor=value; } } /// /// 边框颜色 /// public override System.Drawing.Color BorderColor{ get{ return button.BorderColor; } set{ button.BorderColor=value; } } /// /// 边框风格 /// public override BorderStyle BorderStyle{ get{ return button.BorderStyle; } set{ button.BorderStyle=value; } } /// /// 文本 /// [Bindable(true), Category("Appearance"), DefaultValue("")] public string Text { get { return button.Text; } set { button.Text = value; } } public FileUpload():base(){ FileNum=1; button.Click+=new EventHandler(this.button_Click); this.Controls.Add(button); } /// /// 按钮事件 /// /// /// private void button_Click(object sender, EventArgs e){ Upload(); ///添加你的代码 if(Click!=null) Click(sender,e); ///抛处事件 } /// /// 上传 /// private void Upload(){ System.Web.HttpPostedFile postedFile; for(int i=0;i try{ postedFile=file[i].PostedFile; if(postedFile!=null) { if(postedFile.ContentLength>size && size!=0){ break; } string suf=GetSuffix(postedFile.FileName); if(filter!=null && filter.IndexOf(suf)>-1){ break; } filename[i]=DateTime.Now.Ticks.ToString(); suffix[i]=suf; postedFile.SaveAs(System.IO.Path.Combine(path,filename[i]+suf)); } }finally{ filename[i]=""; } } } /// /// 获取后缀名 /// /// 文件名 /// private string GetSuffix(string filename){ int index=filename.LastIndexOf("."); if(index>0){ return filename.Substring(index); } return ""; } }<