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.

C# BinaryWriter Example

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

Example


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:

Output


Data written successfully...

C# BinaryWriter Example

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