OA系统

开发平台：
ASP/ASPX

Default2.aspx.cs：源码内容
							﻿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;
public partial class web_pos_c_Default2 : System.Web.UI.Page
{
    string StrFilePath = "~/web/oa_upload";
    protected void Page_Load(object sender, EventArgs e)
    {
        int flag = 0;
        Button3.Attributes.Add("onclick","return confirm('確定要刪除該文件嗎？')");
        string filePath = Server.MapPath(StrFilePath);
        if (Directory.Exists(filePath))
        {
            DirectoryInfo[] arrfile = new DirectoryInfo(filePath).GetDirectories(); 
            foreach (DirectoryInfo s in arrfile)
            {
                flag = 0;
                for (int i = 0; i < DropDownList1.Items.Count;i++ )
                {
                    if (s.Name.Equals(Convert.ToString(DropDownList1.Items[i].Text)))
                    {
                        flag = flag + 1;
                    }
                }
                if (flag == 0)
                {
                    DropDownList1.Items.Add(s.Name);
                }
            }
        }
        string str = StrFilePath + "/" + DropDownList1.Text;
        InitFolderInfo(str);
    }
    private void InitFolderInfo(string s)
    {
        int count = 0;
        //将虚拟路径转换为物理路径
        string strFilePath = Server.MapPath(s);
        //声明文件夹已经使用的容量
        double iFolderCurrentSize = 0;
        //获取文件夹中的所有文件
        FileInfo[] arrFiles = new DirectoryInfo(strFilePath).GetFiles();
        //循环文件获已经使用的容量
        foreach (FileInfo fi in arrFiles)
        {
            iFolderCurrentSize += Convert.ToInt32(fi.Length / 1024);
            count = count + 1;
        }
        //把文件夹容量和以用文件夹容量赋值给标签
        lbl_FolderInfo.Text = string.Format("文件夹文件数目：{0}个，已用容量：{1}KB", count, iFolderCurrentSize);
    }
    protected void ShowMessageBox(string strMessage)
    {
        Response.Write(string.Format("<script>alert('{0}')</script>", strMessage));
    }
    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        TextBox1.Text = "";
        ListBox1.Items.Clear();
        string str = StrFilePath + "/" + DropDownList1.Text;
        string filePath = Server.MapPath(StrFilePath + "/" + DropDownList1.Text);
        if (Directory.Exists(filePath))
        {
            FileInfo[] arrfile = new DirectoryInfo(filePath).GetFiles();
            foreach (FileInfo s in arrfile)
            {
                ListBox1.Items.Add(s.Name);
            }
        }
        InitFolderInfo(str);
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string filepath = StrFilePath + "/" + DropDownList1.Text;
        string filename = ListBox1.SelectedValue;
        string fullfilename = Server.MapPath(filepath + "/") + filename;
        FileInfo DowloadFile = new FileInfo(fullfilename);
        Response.Clear();
        Response.ClearHeaders();
        Response.Buffer = false;
        Response.ContentType = "application/octet-stream";
        Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(DowloadFile.FullName, System.Text.Encoding.UTF8));
        Response.AppendHeader("Content-Length", DowloadFile.Length.ToString());
        Response.WriteFile(DowloadFile.FullName);
        Response.Flush();
        Response.End();
    }
    protected void Button3_Click(object sender, EventArgs e)
    {
        string filepath = StrFilePath + "/" + DropDownList1.Text;
        string filename = ListBox1.SelectedValue;
        string strFilePhysicalPath = Server.MapPath(filepath + "/") + filename;
        File.Delete(strFilePhysicalPath);
        ListBox1.Items.Remove(ListBox1.Items.FindByText(filename));
        InitFolderInfo(filepath);
        TextBox1.Text = "";
        ShowMessageBox("删除成功!");
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        string filepath = StrFilePath + "/" + DropDownList1.Text;
        string filename = ListBox1.SelectedValue;
        string filenewname = TextBox1.Text;
        string FilePhysicalPath = Server.MapPath(filepath + "/") + filename;
        string FileNewPhysicalPath = Server.MapPath(filepath + "/") + filenewname;
        File.Move(FilePhysicalPath, FileNewPhysicalPath);
        ListItem li = ListBox1.Items.FindByText(filename);
        li.Text = filenewname;
        li.Value = filenewname;
        ShowMessageBox("文件覆盖成功!");
    }
    #region 列表框事件 ListBox1_SelectedIndexChanged()
    protected void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (!DropDownList1.Text.Equals(""))
        {
            string filepath = StrFilePath + "/" + DropDownList1.Text;
            string filename = ListBox1.SelectedValue;
            string FilePhysicalPath = Server.MapPath(filepath + "/") + filename;
            //根据物理路径实例化文件信息类
            if (!filename.Equals(""))
            {
                FileInfo fi = new FileInfo(FilePhysicalPath);
                //或得文件大小和创建日期赋值给标签
                lbl_FileDescription.Text = string.Format("文件大小：{0}字节<br><br>上传时间：{1}<br>", fi.Length, fi.CreationTime);
                //把文件名赋值给重命名文件框
                TextBox1.Text = filename;
            }
        }
    }
    #endregion
}

						