C# BinaryWriter

C# BinaryWriter class is used to write binary information into stream. It is found in System.IO namespace. It also supports writing string in specific encoding.

Example

Let's see the simple example of BinaryWriter class which writes data into dat file.

snippet

using System;
using System.IO;
namespace BinaryWriterExample
{
    class Program
    {
        static void Main(string[] args)
        {
            string fileName = "e:\\binaryfile.dat";
            using (BinaryWriter writer = new BinaryWriter(File.Open(fileName, FileMode.Create)))
            {
                writer.Write(2.5);
                writer.Write("this is string data");
                writer.Write(true);
            }
            Console.WriteLine("Data written successfully...");  
        }
    }
}

Output

Data written successfully...