Use FileStream to write/read a file byte by byte : FileStream : File Directory Stream C# Examples

Use FileStream to write/read a file byte by byte

    
using  System;
using  System.Windows.Forms;
using  System.IO;

class  MainClass
{
    public  static  void  Main()  
    {
        OpenFileDialog  dlgOpen  =  new  OpenFileDialog();
        dlgOpen.Title="Select  file  to  back  up";

        if  (dlgOpen.ShowDialog()  ==  DialogResult.OK)
        {
            FileStream  inStream  =  File.OpenRead(dlgOpen.FileName);
            FileStream  outStream  =    File.OpenWrite(dlgOpen.FileName  +  ".bak");
            int  b;

            while  ((b  =  inStream.ReadByte())  >  -1)
                outStream.WriteByte(  (byte)  b);

            outStream.Flush();
            outStream.Close();
            inStream.Close();
        }
    }
}
    
   
  
   

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• Open a file with exception handling
• Demonstrate random access file
• Read every other value using FileSeek
• Open an existing file
• Read file stream on a per byte basis
• Read file stream as an array of bytes
• Write data to file through FileStream per byte
• Write data to file through FileStream via an array
• Reset internal position for a FileStream
• Write/read bytes using FileStream
• Use FileStream to read a file selected from OpenFileDialog
• Use FileStream to read a file byte by byte
• Is a stream seekable
• Binary File Reading through FileStream