BinaryWirter

BinaryWriter is a class in the System.IO namespace that provides a way to write binary data to a stream. It can write primitive types, such as integers and floating-point numbers, as well as strings and arrays of bytes.

BinaryWriter is typically used in conjunction with BinaryReader, which provides a way to read binary data from a stream.

Here are some of the most commonly used methods of BinaryWriter:

Write: Writes a single byte to the output stream.

WriteBoolean: Writes a Boolean value to the output stream.

WriteInt32: Writes a 32-bit integer to the output stream.

WriteString: Writes a string to the output stream.

Here's an example that demonstrates how to use BinaryWriter to write binary data to a file:

using System;

using System.IO;

class Program

{

    static void Main(string[] args)

    {

        string path = @"C:\example.bin";

        using (BinaryWriter writer = new BinaryWriter(File.Open(path, FileMode.Create)))

        {

            writer.Write(42);

            writer.Write("Hello, world!");

            writer.Write(new byte[] { 0x01, 0x02, 0x03 });

        }

    }

}

In this example, we create a new BinaryWriter object that writes to a new file at the specified path. We then use the Write method to write an integer, a string, and an array of bytes to the file. The using statement ensures that the writer is properly disposed of when we're finished with it.