Write and read back binary data : BinaryWriter : File Directory Stream C# Examples

    
using  System;  
using  System.IO;    
  
class  MainClass  {  
    public  static  void  Main()  {  
        BinaryWriter  dataOut;  
        BinaryReader  dataIn;  
  
        int  i  =  10;  
        double  d  =  1.56;  
        bool  b  =  true;  
  
        try  {  
            dataOut  =  new  BinaryWriter(new  FileStream("testdata",  FileMode.Create));  
        }  
        catch(IOException  exc)  {  
            Console.WriteLine(exc.Message  +  "\nCannot  open  file.");  
            return;  
        }  
  
        try  {  
            Console.WriteLine("Writing  "  +  i);  
            dataOut.Write(i);    
  
            Console.WriteLine("Writing  "  +  d);  
            dataOut.Write(d);  
  
            Console.WriteLine("Writing  "  +  b);  
            dataOut.Write(b);  
  
            Console.WriteLine("Writing  "  +  12.2  *  7.4);  
            dataOut.Write(12.2  *  7.4);  
  
        }  
        catch(IOException  exc)  {  
            Console.WriteLine(exc.Message  +  "\nWrite  error.");  
        }  
  
        dataOut.Close();  
  
        Console.WriteLine();  
  
        try  {  
            dataIn  =  new  BinaryReader(new  FileStream("testdata",  FileMode.Open));  
        }  
        catch(FileNotFoundException  exc)  {  
            Console.WriteLine(exc.Message  +  "\nCannot  open  file.");  
            return;  
        }  
  
        try  {  
            i  =  dataIn.ReadInt32();  
            Console.WriteLine("Reading  "  +  i);  
  
            d  =  dataIn.ReadDouble();  
            Console.WriteLine("Reading  "  +  d);  
  
            b  =  dataIn.ReadBoolean();  
            Console.WriteLine("Reading  "  +  b);  
  
            d  =  dataIn.ReadDouble();  
            Console.WriteLine("Reading  "  +  d);  
        }  
        catch(IOException  exc)  {  
            Console.WriteLine(exc.Message  +  "Read  error.");  
        }  
  
        dataIn.Close();    
    }  
}