原文地址(點擊打開鏈接)
//創建文件夾
Directory.CreateDirectory(Server.MapPath("a"));
Directory.CreateDirectory(Server.MapPath("b"));
Directory.CreateDirectory(Server.MapPath("c"));
//移動b到a
Directory.Move(Server.MapPath("b"), Server.MapPath("a\\b"));
//刪除c
Directory.Delete(Server.MapPath("c"));
//2.---------文件創建、複製、移動、刪除---------
//創建文件
//使用File.Create創建再複製/移動/刪除時會提示:文件正由另一進程使用,因此該進程無法訪問該文件
//改用 FileStream 獲取 File.Create 返回的 System.IO.FileStream 再進行關閉就無此問題
FileStream fs;
fs = File.Create(Server.MapPath("a.txt"));
fs.Close();
fs = File.Create(Server.MapPath("b.txt"));
fs.Close();
fs = File.Create(Server.MapPath("c.txt"));
fs.Close();
//複製文件
File.Copy(Server.MapPath("a.txt"), Server.MapPath("a\\a.txt"));
//移動文件
File.Move(Server.MapPath("b.txt"), Server.MapPath("a\\b.txt"));
File.Move(Server.MapPath("c.txt"), Server.MapPath("a\\c.txt"));
//刪除文件
File.Delete(Server.MapPath("a.txt"));
//3.---------遍歷文件夾中的文件和子文件夾並顯示其屬性---------
if(Directory.Exists(Server.MapPath("a")))
{
//所有子文件夾
foreach(string item in Directory.GetDirectories(Server.MapPath("a")))
{
Response.Write("<b>文件夾:" + item + "</b><br/>");
DirectoryInfo directoryinfo = new DirectoryInfo(item);
Response.Write("名稱:" + directoryinfo.Name + "<br/>");
Response.Write("路徑:" + directoryinfo.FullName + "<br/>");
Response.Write("創建時間:" + directoryinfo.CreationTime + "<br/>");
Response.Write("上次訪問時間:" + directoryinfo.LastAccessTime + "<br/>");
Response.Write("上次修改時間:" + directoryinfo.LastWriteTime + "<br/>");
Response.Write("父文件夾:" + directoryinfo.Parent + "<br/>");
Response.Write("所在根目錄:" + directoryinfo.Root + "<br/>");
Response.Write("<br/>");
}
//所有子文件
foreach (string item in Directory.GetFiles(Server.MapPath("a")))
{
Response.Write("<b>文件:" + item + "</b><br/>");
FileInfo fileinfo = new FileInfo(item);
Response.Write("名稱:" + fileinfo.Name + "<br/>");
Response.Write("擴展名:" + fileinfo.Extension +"<br/>");
Response.Write("路徑:" + fileinfo.FullName +"<br/>");
Response.Write("大小:" + fileinfo.Length +"<br/>");
Response.Write("創建時間:" + fileinfo.CreationTime +"<br/>");
Response.Write("上次訪問時間:" + fileinfo.LastAccessTime +"<br/>");
Response.Write("上次修改時間:" + fileinfo.LastWriteTime +"<br/>");
Response.Write("所在文件夾:" + fileinfo.DirectoryName +"<br/>");
Response.Write("文件屬性:" + fileinfo.Attributes +"<br/>");
Response.Write("<br/>");
}
}
//4.---------文件讀寫---------
if (File.Exists(Server.MapPath("a\\a.txt")))
{
StreamWriter streamwrite = new StreamWriter(Server.MapPath("a\\a.txt"));
streamwrite.WriteLine("木子屋");
streamwrite.WriteLine("http://www.mzwu.com/");
streamwrite.Write("2008-04-13");
streamwrite.Close();
StreamReader streamreader = new StreamReader(Server.MapPath("a\\a.txt"));
Response.Write(streamreader.ReadLine());
Response.Write(streamreader.ReadToEnd());
streamreader.Close();
}
下篇
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 Default3 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
ShowPic.Visible = false;//初始化不顯示
ShowText.Visible = false;//初始化不顯示
}
protected void Button1_Click(object sender, EventArgs e)
{
if (Directory.Exists(Server.MapPath("~/upimg/hufu")) == false)//如果不存在就創建file文件夾
{
Directory.CreateDirectory(Server.MapPath("~/upimg/hufu"));
}
//Directory.Delete(Server.MapPath("~/upimg/hufu"), true);//刪除文件夾以及文件夾中的子目錄,文件
//判斷文件的存在
if (File.Exists(Server.MapPath("~/upimg/Data.html")))
{
Response.Write("Yes");
//存在文件
}
else
{
Response.Write("No");
//不存在文件
File.Create(MapPath("~/upimg/Data.html"));//創建該文件
}
string name = GetFiles.FileName;//獲取已上傳文件的名字
string size = GetFiles.PostedFile.ContentLength.ToString();//獲取已上傳文件的大小
string type = GetFiles.PostedFile.ContentType;//獲取已上傳文件的MIME
string postfix = name.Substring(name.LastIndexOf(".") + 1);//獲取已上傳文件的後綴
string ipath = Server.MapPath("upimg") +"\\"+ name;//獲取文件的實際路徑
string fpath = Server.MapPath("upfile") + "\\" + name;
string dpath = "upimg\\" + name;//判斷寫入數據庫的虛擬路徑
ShowPic.Visible = true;//激活
ShowText.Visible = true;//激活
//判斷文件格式
if (name == "") {
Response.Write("<script>alert('上傳文件不能爲空')</script>");
}
else{
if (postfix == "jpg" || postfix == "gif" || postfix == "bmp" || postfix == "png")
{
GetFiles.SaveAs(ipath);
ShowPic.ImageUrl = dpath;
ShowText.Text = "你上傳的圖片名稱是:" + name + "<br>" + "文件大小:" + size + "KB" + "<br>" + "文件類型:" + type + "<br>" + "存放的實際路徑爲:" + ipath;
}
else
{
ShowPic.Visible = false;//隱藏圖片
GetFiles.SaveAs(fpath);//由於不是圖片文件,因此轉存在upfile這個文件夾
ShowText.Text = "你上傳的文件名稱是:" + name + "<br>" + "文件大小:" + size + "KB" + "<br>" + "文件類型:" + type + "<br>" + "存放的實際路徑爲:" + fpath;
}
}
}
}