asp.net文件夹操作类FileInfo类和DirectoryInfo类的使用

FileInfo类和DirectoryInfo类的使用

 

.NET内建类型中提供了FileInfo和DirectoryInfo俩个类型，分别用来操作文件和文件夹，有别于File和Directory类型，FileInfo和DirectoryInfo主要功能在于操作文件和文件夹在文件系统中的结构，完成诸如：创建，复制，读取信息，移动，判断是否存在，删除等功能。public class UseFileInfo
    {
        //static void Main(string[] arg)
        //{
        //    Processfile();
        //    Console.Read();
        //}

        static void Processfile()
        {
            FileInfo info = null;
            FileInfo newInfo = null;
            //创建文件
            info = new FileInfo("c:\\test1.txt");
            using (FileStream fs = info.Create())
            { }
            Console.WriteLine("原始文件：");
            ReadFileInfo(info);
            //移动文件
            info.MoveTo("c:\\test2.txt");
            Console.WriteLine("移动后的新文件：");
            ReadFileInfo(info);
            //复制文件
            newInfo = info.CopyTo("c:\\test3.txt");
            Console.WriteLine("复制后的新文件:");
            ReadFileInfo(newInfo);
            
        
            
        }

        static void ReadFileInfo(FileInfo fi)
        {
            Console.WriteLine("文件名为："+fi.Name);
            Console.WriteLine("文件在:"+fi.DirectoryName);
            Console.WriteLine("文件的长度："+fi.Length);
            Console.WriteLine("文件创建于："+fi.CreationTime);
            Console.WriteLine("文件的最后访问时间:" + fi.LastAccessTime);
            Console.WriteLine("文件的最后修改时间：" + fi.LastWriteTime);
            Console.WriteLine("文件全名是：" + fi.FullName);
            Console.WriteLine("文件的扩展名是：" + fi.Extension);
        }
    }

 

 

 

 

public class UseDirectoryInfo
    {
        static void Main(string[] args)
        {
            ProcessDirectoryInfo();
            Console.Read();
        }

        static void ProcessDirectoryInfo()
        {
            DirectoryInfo di = null;
            di = new DirectoryInfo("c:\\text");
            di.Create();
            di.CreateSubdirectory("subidc");

            FileInfo info = new FileInfo("c:\\text\\subidc\\text.txt");
            using (FileStream fs = info.Create()) { }
            ReadDirectoryInfo(di);
            di.MoveTo("c:\\test2");
        }

        static void ReadDirectoryInfo(DirectoryInfo di)
        {
            Console.WriteLine("文件夹名为："+di.Name);
            Console.WriteLine("父文件夹为："+di.Parent.Name);
            Console.WriteLine("文件夹创建于："+di.CreationTime);
            Console.WriteLine("文件夹的最后修改时间:" + di.LastWriteTime);
            Console.WriteLine("文件夹的最后访问时间：" + di.LastAccessTime);
            Console.WriteLine("文件夹的全名是：" + di.FullName);
            Console.WriteLine("文件夹中的文件：");
            FileInfo[] fis = di.GetFiles();
            foreach (FileInfo fi in fis)
            {
                ReadFileInfo(fi);
            }
            Console.WriteLine("文件夹中的子文件夹:");
            DirectoryInfo[] dis = di.GetDirectories();
            foreach (DirectoryInfo dd in dis)//递归获取所有子文件夹
            {
                ReadDirectoryInfo(dd);
            }
        }

        static void ReadFileInfo(FileInfo fi)
        {
            Console.WriteLine("文件名为：" + fi.Name);
            Console.WriteLine("文件在:" + fi.DirectoryName);
            Console.WriteLine("文件的长度：" + fi.Length);
            Console.WriteLine("文件创建于：" + fi.CreationTime);
            Console.WriteLine("文件的最后访问时间:" + fi.LastAccessTime);
            Console.WriteLine("文件的最后修改时间：" + fi.LastWriteTime);
            Console.WriteLine("文件全名是：" + fi.FullName);
            Console.WriteLine("文件的扩展名是：" + fi.Extension);
        }
    }