C#檔案和檔案夾操作
來源:互聯網
上載者:User
//1.檔案夾建立、移動、刪除---------
//建立檔案夾
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.檔案建立、複製、移動、刪除---------
//建立檔案
//使用File.Create建立再複製/移動/刪除時會提示:檔案正由另一進程使用,因此該進程無法訪問該檔案
//改用 FileStream 擷取 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();
//複製檔案
File.Copy(Server.MapPath("a.txt"), Server.MapPath("a\\a.txt"));
//移動檔案
File.Move(Server.MapPath("b.txt"), Server.MapPath("a\\b.txt"));
File.Move(Server.MapPath("c.txt"), Server.MapPath("a\\c.txt"));
//刪除檔案
File.Delete(Server.MapPath("a.txt"));
//3.遍曆檔案夾中的檔案和子檔案夾並顯示其屬性---------
if(Directory.Exists(Server.MapPath("a")))
{
//所有子檔案夾
foreach(string item in Directory.GetDirectories(Server.MapPath("a")))
{
Response.Write("<b>檔案夾:" + item + "</b><br/>");
DirectoryInfo directoryinfo = new DirectoryInfo(item);
Response.Write("名稱:" + directoryinfo.Name + "<br/>");
Response.Write("路徑:" + directoryinfo.FullName + "<br/>");
Response.Write("建立時間:" + 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("父資料夾:" + directoryinfo.Parent + "<br/>");
Response.Write("所在根目錄:" + directoryinfo.Root + "<br/>");
Response.Write("<br/>");
}
//所有子檔案
foreach (string item in Directory.GetFiles(Server.MapPath("a")))
{
Response.Write("<b>檔案:" + item + "</b><br/>");
FileInfo fileinfo = new FileInfo(item);
Response.Write("名稱:" + fileinfo.Name + "<br/>");
Response.Write("副檔名:" + fileinfo.Extension +"<br/>");
Response.Write("路徑:" + fileinfo.FullName +"<br/>");
Response.Write("大小:" + fileinfo.Length +"<br/>");
Response.Write("建立時間:" + 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("所在檔案夾:" + fileinfo.DirectoryName +"<br/>");
Response.Write("檔案屬性:" + fileinfo.Attributes +"<br/>");
Response.Write("<br/>");
}
}
//4.檔案讀寫---------
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();
}