Csharp/CSharp Tutorial/File Directory Stream/FileInfo

Create FileStream from FileInfo for reading

<source lang="csharp">using System; using System.IO; public class MainClass {

 static void Main(string[] args)
 {
   FileInfo MyFiles = new FileInfo(@"c:\Testing.txt");
   FileStream MyFileStream1 = MyFiles.OpenRead();
   int MyBytes = MyFileStream1.ReadByte();
   MyFileStream1.Close();    
 }

}</source>

Create FileStream from FileInfo for writing

<source lang="csharp">using System; using System.IO; public class MainClass {

 static void Main(string[] args)
 {
   FileInfo MyFiles = new FileInfo(@"c:\Testing.txt");
   FileStream MyFileStream1 = MyFiles.OpenWrite();
   byte MyWriteByte = 100;
   MyFileStream1.WriteByte(MyWriteByte);
   
   MyFileStream1.Close();    
 }

}</source>

Create StreamWriter from FileInfo

<source lang="csharp">using System; using System.IO; public class MainClass {

 static void Main(string[] args)
 {
   FileInfo MyFile = new FileInfo(@"c:\Testing.txt");
   StreamWriter MyStreamWriter = MyFile.CreateText();
   MyStreamWriter.Write("a string");
   MyStreamWriter.Close();
   
 }

}</source>

File Sorter

<source lang="csharp">using System; using System.IO; using System.ruponentModel;

   class FileSorter{
       static void SortAndShowFiles(string title,Comparison<FileInfo> sortOrder){
           FileInfo[] files = new DirectoryInfo("C:\\").GetFiles();
           Array.Sort(files, sortOrder);
           Console.WriteLine(title);
           foreach (FileInfo file in files){
               Console.WriteLine("  {0} ({1} bytes)",file.Name, file.Length);
           }
       }
       static void Main(){
           SortAndShowFiles("Sorted by name:",delegate(FileInfo first, FileInfo second)
               { return first.Name.rupareTo(second.Name); }
           );
       }
   }</source>

Open an existing file and return a FileStream

<source lang="csharp">using System; using System.IO; public class MainClass {

 static void Main(string[] args)
 {
   FileInfo MyFile = new FileInfo(@"c:\Testing.txt");
   FileStream MyStream;
   MyStream = MyFile.Open(FileMode.Open, FileAccess.Read, FileShare.None);
 }

}</source>

Show info on image types

<source lang="csharp">using System; using System.Collections.Generic; using System.Text; using System.IO; using System.Linq;

 class Program
 {
   static void Main(string[] args)
   {
     DirectoryInfo dir = new DirectoryInfo(@"C:\Windows\Web\Wallpaper");
     FileInfo[] imageFiles = dir.GetFiles("*.jpg");
     Console.WriteLine("Found {0} *.jpg files\n", imageFiles.Length);
     foreach (FileInfo f in imageFiles)
     {
       Console.WriteLine("File name: {0}", f.Name);
       Console.WriteLine("File size: {0}", f.Length);
       Console.WriteLine("Creation: {0}", f.CreationTime);
       Console.WriteLine("Attributes: {0}", f.Attributes);
     }
   }
 }</source>