027 C# File Handleing Part 3

Directoryinfo : Directoryinfo class comes under the namespace System.IO. Directory info class cannot be used directly as there is no static method defined in it . To use Directoryinfo class, you need to create an instance of the directory info. The instance method help to manipulate directory like create,delete, existence check ect.Here are some commonly used methods.

• Attributes :  Returns attribute of a directory. 
• CreationTime : Return file/ directory creation time. 
• Exists : Return Boolean indicating that directory/ file physically exist or not. 
• FullName : Return file /directory full path. 
• LastAccessTime : Return file /directory last access time. 
• Name : Return instance of the name of file /directory. 
• Create : Used for creation a directory. 
• Delete : Delete empty directory info. 
• GetFiles : Return collection of filename of current directory. 

using System;

using System.IO;

namespace student

{

        class student

       {

            static void Main(string[] args)

            {

                 DirectoryInfo fI = new DirectoryInfo("c:\\drirectory1");

 

          //Create

                fI.Create();

               Console.WriteLine("test.txt file created");

              //Attributes

              FileAttributes att = fI.Attributes;

              Console.WriteLine(fI.Attributes);

             //Output:-1

 

           //Exists

            if (fI.Exists)

            {

                Console.WriteLine(fI.Exists);

            }

           //Output:True or False

 

       //Delete

          fI.Delete();

          Console.WriteLine("test.txt file Deleted");

         //CreationTime

         string dt = fI.CreationTime.ToShortDateString();

        Console.WriteLine("Creation time is :"+ dt);

        //FullName

        string fpath = fI.FullName.ToString();

       Console.WriteLine("Full Path is :" + fpath);

       //LastAccessTime

       string dt2 = fI.LastAccessTime.ToShortDateString();

       Console.WriteLine("Last Acess On :" + dt2);

       }

   }

}

Fileinfo : Fileinfo comes under the namespace System.IO. You will not get static method in Fileinfo class , you cannot call them directly. To use Fileinfo class , you need to  create an instance of that class. The instance method help us to manipulate file , such as  create, delete, existence check.Here are some commonly used methods.

• Attributes : Get or Set current file or directory attribute. 
• CreationTime  : Return file creation time. 
• Exists : Return Boolean indicator, indicating the file physically exist or not. 
• FullName  : Return full path of a file. 
• LastAccessTime  : Return time when the file was last accessed. 
• Name : Return name of the file. 
• Create : Used to create a file : 
• Delete : Delete a file.

using System;

using System.IO;

namespace student

{

       class student

      {

              public static void main()

              {

                 FileInfo fI = new FileInfo("c:\\drirectory1\\test.txt");

                //Create

                fI.Create();

                Console.WriteLine("test.txt file created");

               //Attributes

               FileAttributes att = fI.Attributes;

              Console.WriteLine(fI.Attributes);

              //Output:-1

 

              //Exists

              if (fI.Exists)

              {

                   Console.WriteLine(fI.Exists);

              }

             //Output:True or False

            //Delete

            fI.Delete();

           Console.WriteLine("test.txt file Deleted");

           //CreationTime

           string dt = fI.CreationTime.ToShortDateString();

          Console.WriteLine("Creation time is :"+ dt);

         //FullName

         string fpath = fI.FullName.ToString();

        Console.WriteLine("Full Path is :" + fpath);

         //LastAccessTime

         string dt2 = fI.LastAccessTime.ToShortDateString();

         Console.WriteLine("Last Acess On :" + dt2);

              }

       }

}

Directory :Directory class comes under the namespace System.IO. Directory class have some static method to manipulate directory. Create, delete, existence check, the file from the directory can be  obtained from this class.Here are some commonly used methods.

• GetCreationTime : Get creation date and time of a directory. 
• Exists: Return Boolean indicating that file or directory physically exist or not. 
• GetLastAccessTime : Return datetime of the specific directory when last accessed. 
• CreateDirectory : Create a directory. 
• Delete: Delete a directory. 
• GetFiles: Return the collection of the file object of the current directory.

using System;

using System.IO;

namespace student

{

          class student

         {

               public static void Main()

             {

                 //CreateDirectory

                  Directory.CreateDirectory("c:\\drirectory1");

                  Console.WriteLine("drirectory1 created.");

               //Exists

              if (Directory.Exists("c:\\drirectory1"))

             {

               Console.WriteLine("drirectory1 exists.");

             }

 

             //Delete

             Directory.Delete("c:\\drirectory1");

            Console.WriteLine("drirectory1 deleted.");

            //GetLastAccessTime

           //Directory.GetLastAccessTime("c:\\drirectory1");

          Console.WriteLine(Directory.GetLastAccessTime("c:\\drirectory1").ToString());

        //GetCreationTime

         Directory.GetCreationTime("c:\\drirectory1");

         Console.WriteLine(Directory.GetCreationTime("c:\\drirectory1").ToString());

       

    //GetFiles

     string[] arr=Directory.GetFiles("c:\\drirectory1");

      foreach (string name in arr)

     {

          Console.WriteLine(name);

     }

    }

}

}