FileMode.Open : FileMode « System.IO « C# / C Sharp by API

1. C# / C Sharp by API
2. System.IO
3. FileMode

FileMode.Open

  
using System; 
using System.IO;  
 
class MainClass { 
  public static void Main(string[] args) { 
    int i; 
    FileStream fin; 
    FileStream fout; 
 
    try { 
      fin = new FileStream("inputFile.txt", FileMode.Open); 
    } catch(FileNotFoundException exc) { 
      Console.WriteLine(exc.Message + "\nInput File Not Found"); 
      return; 
    } 
 
    try { 
      fout = new FileStream("outputFile.txt", FileMode.Create); 
    } catch(IOException exc) { 
      Console.WriteLine(exc.Message + "\nError Opening Output File"); 
      return; 
    } 
 
    try { 
      do { 
        i = fin.ReadByte(); 
        if(i != -1) 
           fout.WriteByte((byte)i); 
      } while(i != -1); 
    } catch(IOException exc) { 
      Console.WriteLine(exc.Message + "File Error"); 
    } 
 
    fin.Close(); 
    fout.Close(); 
  } 
}

   
    
  

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