Csharp/C Sharp/File Stream/File Info

Copying A File

/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 * Version: 1
 */
using System;
using System.IO;
namespace Client.Chapter_11___File_and_Streams
{
  public class CopyingAFile {
    static void Main(string[] args)
    {
      FileInfo MyFile = new FileInfo(@"c:\Projects\Testing.txt");
      MyFile.Create();
      MyFile.CopyTo(@"c:\Projects\MyFolder\Moved Testing.txt");
      //or
      MyFile.CopyTo(@"c:\Projects\MyFolder\Moved Testing.txt", true);
    }
  }
}

Create DriveInfo object from FullName of FileInfo

using System;
using System.IO;
class MainClass {
    static void Main(string[] args) {
        FileInfo file = new FileInfo("c:\\a.txt");
        // Display drive information.
        DriveInfo drv = new DriveInfo(file.FullName);
        Console.Write("Drive: ");
        Console.WriteLine(drv.Name);
    }
}

Create FileStream from FileInfo

using System;
using System.IO;
class FileFileInfoApp
{
    static void Main(string[] args)
    {
        FileInfo f = new FileInfo("Bar.txt");
        FileStream fs = f.Create();
   
        StreamWriter w = new StreamWriter(fs);
        w.Write("Hello World");
        w.Close();
   
        fs = f.Open(FileMode.Open, FileAccess.Read, FileShare.None);
        StreamReader r = new StreamReader(fs);
        string t;
        while ((t = r.ReadLine()) != null){
            Console.WriteLine(t);
        }
        w.Close();
        fs.Close();
        f.Delete();
    }
}

Create Stream from FileInfo from OpenText method

using System;
using System.IO;
public class LicenseViewer {
    public static void Main() {
        FileInfo license = new FileInfo("c:\\LICENSE.txt");
        StreamReader txtIn = license.OpenText();
        String line;
        do {
            line = txtIn.ReadLine();
            Console.WriteLine(line);
        } while (line != null);
    }
}

Creating Files

/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 * Version: 1
 */
using System;
using System.IO;
namespace Client.Chapter_11___File_and_Streams
{
  public class CreatingFiles {
    public CreatingFiles()
    {
      FileInfo MyFile = new FileInfo(@"c:\Projects\Testing.txt");
      MyFile.Create();
    }
  }
}

Deleting Files

/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 * Version: 1
 */
using System;
using System.IO;
namespace Client.Chapter_11___File_and_Streams
{
  public class DeletingFiles {
    static void Main(string[] args)
    {
      FileInfo MyFile = new FileInfo(@"c:\Projects\Testing.txt");
      MyFile.Create();
      MyFile.Delete();
    }
  }
}

Get Directory information from FileInfo

using System;
using System.IO;
class MainClass {
    static void Main(string[] args) {
        FileInfo file = new FileInfo("c:\\a.txt");
        // Display directory information.
        DirectoryInfo dir = file.Directory;
        Console.WriteLine("Checking directory: " + dir.Name);
        Console.WriteLine("In directory: " + dir.Parent.Name);
        Console.Write("Directory exists: ");
        Console.WriteLine(dir.Exists.ToString());
    }
}

Get File Attributes from FileInfo

using System;
using System.IO;
class Class1 {
    static void Main(string[] args) {
        string[] cla = Environment.GetCommandLineArgs();
        if (cla.GetUpperBound(0) == 1) {
            FileInfo fi = new FileInfo(cla[1]);
            fi.Delete();
            Console.WriteLine("File      : " + cla[1]);
            Console.WriteLine("Attributes: " + fi.Attributes.ToString());
            Console.WriteLine("File Deleted...");
        } else
            Console.WriteLine("Usage: rm <filename>");
    }
}

Get file Creation time from FileInfo

using System;
using System.IO;
class Class1 {
    static void Main(string[] args) {
        string[] cla = Environment.GetCommandLineArgs();
        if (cla.GetUpperBound(0) == 2) {
            FileInfo fi = new FileInfo(cla[1]);
            fi.MoveTo(cla[2]);
            Console.WriteLine("File Created : " + fi.CreationTime.ToString());
            Console.WriteLine("Moved to     : " + cla[2]);
        } else
            Console.WriteLine("Usage: mv <source file> <destination file>");
    }
}

Get Last updated, accessed and write time

using System;
using System.IO;
class MainClass {
    static void Main(string[] args) {
        FileInfo file = new FileInfo("c:\\a.txt");
        Console.WriteLine("Checking file: " + file.Name);
        Console.WriteLine("File exists: " + file.Exists.ToString());
        if (file.Exists) {
            Console.Write("File created: ");
            Console.WriteLine(file.CreationTime.ToString());
            Console.Write("File last updated: ");
            Console.WriteLine(file.LastWriteTime.ToString());
            Console.Write("File last accessed: ");
            Console.WriteLine(file.LastAccessTime.ToString());
            Console.Write("File size (bytes): ");
            Console.WriteLine(file.Length.ToString());
            Console.Write("File attribute list: ");
            Console.WriteLine(file.Attributes.ToString());
        }
    }
}

Moving A Files

/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 * Version: 1
 */
using System;
using System.IO;
namespace Client.Chapter_11___File_and_Streams
{
  public class MovingAFiles {
    static void Main(string[] args)
    {
      FileInfo MyFile = new FileInfo(@"c:\Projects\Testing.txt");
      MyFile.Create();
      MyFile.MoveTo(@"c:\Projects\MyFolder\Moved Testing.txt");
      MyFile.MoveTo(@"C:|projects\MyFolder");
    }
  }
}

Open Existing File

/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 * Version: 1
 */
using System;
using System.IO;
namespace Client.Chapter_11___File_and_Streams
{
  public class OpenExistingFile {
    static void Main(string[] args)
    {
      FileInfo MyFile = new FileInfo(@"c:\Projects\Testing.txt");
      FileStream MyStream;
      MyStream = MyFile.Open(FileMode.Open, FileAccess.Read, FileShare.None);
    }
  }
}