C# BinaryReader

C# BinaryReader class is used to read binary information from stream. It is found in System.IO namespace. It also supports reading string in specific encoding.

C# BinaryReader Example

Let's see the simple example of BinaryReader class which reads data from dat file.

1. using System;  
2. using System.IO;  
3. namespace BinaryWriterExample  
4. {  
5.     class Program  
6.     {  
7.         static void Main(string[] args)  
8.         {  
9.             WriteBinaryFile();  
10.             ReadBinaryFile();  
11.             Console.ReadKey();  
12.         }  
13.         static void WriteBinaryFile()  
14.         {  
15.             using (BinaryWriter writer = new BinaryWriter(File.Open("e:\\binaryfile.dat", FileMode.Create)))  
16.             {  
17.                  
18.                 writer.Write(12.5);  
19.                 writer.Write("this is string data");  
20.                 writer.Write(true);  
21.             }  
22.         }  
23.         static void ReadBinaryFile()  
24.         {  
25.             using (BinaryReader reader = new BinaryReader(File.Open("e:\\binaryfile.dat", FileMode.Open)))  
26.             {  
27.                 Console.WriteLine("Double Value : " + reader.ReadDouble());  
28.                 Console.WriteLine("String Value : " + reader.ReadString());  
29.                 Console.WriteLine("Boolean Value : " + reader.ReadBoolean());  
30.             }  
31.         }  
32.     }  
33. }  

Output:

Double Value : 12.5
String Value : this is string data
Boolean Value : true