上传文件用户控件

 

代码

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;

public   partial   class  Admin_UploadFile : System.Web.UI.UserControl
{
    private string uppaths = "../uploads";//必须存在
    private int uptype = 2;
    private int uplimite = 100;
    private string filetype = "jpg|gif|png|bmp";
    private string cssclass = "";
    private string filepath = "";

    // 上传路径
    public string upPaths
    {
        get { return uppaths; }
        set { uppaths = value; }
    }
    //上传类型(1:原文件名 2:日期时间)
    public string upType
    {
        get { return uptype.ToString(); }
        set { uptype = Convert.ToInt32(value); }
    }
    //限制大小(KB)
    public string upLimite
    {
        get { return uplimite.ToString(); }
        set { uplimite = Convert.ToInt32(value);}
    }
    //可上传文件类型(扩展名)
    public string fileType
    {
        get { return filetype; }
        set { filetype = value; }
    }
    public string CssClass
    {
        get { return cssclass; }
        set { cssclass = value; }
    }
    public string filePath
    {
        get { return PicPath.Text; }
        set
        {
            filepath = value;
            PicPath.Text = filepath;
        }
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            UploadBox.CssClass = cssclass;
        }
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        string fullname;
        fullname = FileUpload1.FileName.ToString();
        string url = FileUpload1.PostedFile.FileName.ToString();//这个是以前2003用的，先取得全部的上传文件路径个名字，然后再利用SubString方法来得到用户名，现在看来是没有必要了
        string typ = FileUpload1.PostedFile.ContentType.ToString();//获取文件MIME内容类型
        string typ2 = fullname.Substring(fullname.LastIndexOf(".") + 1);//获取文件名字 . 后面的字符作为文件类型
        long size = FileUpload1.PostedFile.ContentLength / 1024;
        int i = 0;
        if (uptype != 1)
        {
            fullname = System.DateTime.Now.ToString("yyyyMMddhhmmss") + "." + typ2;
        }
        string[] sArray = filetype.Split('|');
        foreach (string s in sArray)
        {
            if (s == typ2)
            {
                i = i + 1;
            }
        }
        if (i > 0)
        {
            if (uplimite >= size)
            {
                FileUpload1.SaveAs(Server.MapPath(uppaths) + "\\" + fullname);//将文件保存在跟目录的UP文件夹下
                PicPath.Text = uppaths + @"/" + fullname;
                Utility.jsUtility.Alert("上传成功！");
            }
            else
            {

                Utility.jsUtility.Alert("您上传的文件不能超过 " + uplimite.ToString() + " KB！");
            }
        }
        else
        {
            Utility.jsUtility.Alert("文件类型错误！支持类型：" + filetype);
        }
    }
}

界面

<% @ Control Language = " C# "  AutoEventWireup = " true "  CodeFile = " UploadFile.ascx.cs "  Inherits = " Admin_UploadFile "   %>
< asp:Panel ID = " UploadBox "  runat = " server " >
上传图片： < asp:FileUpload ID = " FileUpload1 "  runat = " server "   />& nbsp;
< asp:Button ID = " Button1 "  runat = " server "  Text = " 开始上传 "  OnClick = " Button1_Click "   />
< br  />
图片路径： < asp:TextBox ID = " PicPath "  runat = " server "  Width = " 280px "   />
</ asp:Panel >