C# | Byte.GetHashCode() Method

This method is used to return the hash code for the given byte.
Syntax:

public override int GetHashCode ();

Return Value: This method returns a hash code for the current Byte.
Below programs illustrate the use of Byte.GetHashCode() Method:
Example 1:

CSHARP

// C# program to demonstrate
// Byte.GetHashCode Method
using System;

class GFG {

    // Main Method
    public static void Main()
    {

        // Declaring and initializing val
        long val = 83935;

        // converting long array into bytes
        byte[] bytes = BitConverter.GetBytes(val);

        // getting hashcode
        // using GetHashCode() method
        for (int i = 0; i < bytes.Length; i++) {

            // getting hash code of a single byte
            int j = bytes[i].GetHashCode();

            Console.WriteLine("Hashcode: {0}", j);
        }
    }
}

Output:

Hashcode: 223
Hashcode: 71
Hashcode: 1
Hashcode: 0
Hashcode: 0
Hashcode: 0
Hashcode: 0
Hashcode: 0

Example 2:

CSHARP

// C# program to demonstrate
// Byte.GetHashCode Method
using System;

class GFG {

    // Main Method
    public static void Main()
    {

        check((long)8543, "long");
        check((int)8543, "int");
        check((byte)85, "byte");
    }

    // Defining the check method
    public static void check(long val, string name)
    {

        // converting long array into bytes
        byte[] bytes = BitConverter.GetBytes(val);

        // getting hashcode
        // using GetHashCode() method
        Console.Write(name + " hashcode:- ");
        for (int i = 0; i < bytes.Length; i++) {

            // getting hash code of a single byte
            int j = bytes[i].GetHashCode();
            Console.Write("{0} ", j);
        }
        Console.WriteLine("");
    }

    // Defining the check method
    public static void check(int val, string name)
    {

        // converting long array into bytes
        byte[] bytes = BitConverter.GetBytes(val);

        // getting hashcode
        // using GetHashCode() method
        Console.Write(name + " Hashcode: ");
        for (int i = 0; i < bytes.Length; i++) {

            // getting hash code of a single byte
            int j = bytes[i].GetHashCode();
            Console.Write("{0} ", j);
        }
        Console.WriteLine("");
    }

    // Defining the check method
    public static void check(byte val, string name)
    {

        // converting long array into bytes
        byte[] bytes = BitConverter.GetBytes(val);

        // getting hashcode
        // using GetHashCode() method
        Console.Write(name + " hashcode:- ");
        for (int i = 0; i < bytes.Length; i++) {

            // getting hash code of a single byte
            int j = bytes[i].GetHashCode();
            Console.Write("{0} ", j);
        }
        Console.WriteLine("");
    }
}

Output:

long hashcode:- 95 33 0 0 0 0 0 0 
int Hashcode: 95 33 0 0 
byte hashcode:- 85 0

Reference:

• https://docs.microsoft.com/en-us/dotnet/api/system.byte.gethashcode?view=netframework-4.7.2