本文实例讲述了C#进行文件读写、创建、复制、移动、删除的方法。分享给大家供大家参考。具体分析如下：
1.文件夹创建、移动、删除
//创建文件夹
Directory.CreateDirectory(Server.MapPath("a"));
Directory.CreateDirectory(Server.MapPath("b"));
Directory.CreateDirectory(Server.MapPath("c"));
//移动b到a
Directory.Move(Server.MapPath("b"), Server.MapPath("a//b"));
//删除c
Directory.Delete(Server.MapPath("c"));
2.文件创建、复制、移动、删除
//创建文件
//使用File.Create创建再复制/移动/删除时会提示：
//文件正由另一进程使用,因此该进程无法访问该文件
//改用 FileStream 获取 File.Create
//返回的 System.IO.FileStream再进行关闭就无此问题
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();
//复制文件
File.Copy(Server.MapPath("a.txt"),Server.MapPath("a//a.txt"));
//移动文件
File.Move(Server.MapPath("b.txt"),Server.MapPath("a//b.txt"));
File.Move(Server.MapPath("c.txt"),Server.MapPath("a//c.txt"));
//删除文件
File.Delete(Server.MapPath("a.txt"));
3.遍历文件夹中的文件和子文件夹并显示其属性
if(Directory.Exists(Server.MapPath("a")))
{
//所有子文件夹
foreach(string item inDirectory.GetDirectories(Server.MapPath("a")))
{
Response.Write("<b>文件夹：" + item +"</b><br/>");
DirectoryInfo directoryinfo = new DirectoryInfo(item);
Response.Write("名称："+directoryinfo.Name +"<br/>");
Response.Write("路径："+directoryinfo.FullName +"<br/>");
Response.Write("创建时间："+directoryinfo.CreationTime +"<br/>");
Response.Write("上次访问时间："+directoryinfo.LastAccessTime+"<br/>");
Response.Write("上次修改时间："+directoryinfo.LastWriteTime+"<br/>");
Response.Write("父文件夹："+directoryinfo.Parent+"<br/>");
Response.Write("所在根目录："+directoryinfo.Root+"<br/>");
Response.Write("<br/>");
}
//所有子文件
foreach (string item inDirectory.GetFiles(Server.MapPath("a")))
{
Response.Write("<b>文件：" + item +"</b><br/>");
FileInfo fileinfo = new FileInfo(item);
Response.Write("名称：" + fileinfo.Name +"<br/>");
Response.Write("扩展名：" + fileinfo.Extension+"<br/>");
Response.Write("路径：" + fileinfo.FullName+"<br/>");
Response.Write("大小：" + fileinfo.Length+"<br/>");
Response.Write("创建时间：" + fileinfo.CreationTime+"<br/>");
Response.Write("上次访问时间：" + fileinfo.LastAccessTime+"<br/>");
Response.Write("上次修改时间：" + fileinfo.LastWriteTime+"<br/>");
Response.Write("所在文件夹：" + fileinfo.DirectoryName+"<br/>");
Response.Write("文件属性：" + fileinfo.Attributes+"<br/>");
Response.Write("<br/>");
}
}
4.文件读写
if (File.Exists(Server.MapPath("a//a.txt")))
{
StreamWriter streamwrite = newStreamWriter(Server.MapPath("a//a.txt"));
streamwrite.WriteLine("木子屋");
streamwrite.WriteLine("http://www.phpstudy.net/");
streamwrite.Write("2008-04-13");
streamwrite.Close();
StreamReader streamreader = newStreamReader(Server.MapPath("a//a.txt"));
Response.Write(streamreader.ReadLine());
Response.Write(streamreader.ReadToEnd());
streamreader.Close();
}
希望本文所述对大家的C#程序设计有所帮助。