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C# program to get the hash-code of enum constants

Here, we are going to learn how to get the hash-code of enum constants in C#?
Submitted by Nidhi, on November 08, 2020

Here, we will print the hashcode of enum constants using GetTypeCode() method and then print them on the console screen.

Program:

The source code to get the hash-code of enum constants is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

//C# program to get the hash-code of enum constants.

using System;

enum COLOR
{
    RED, GREEN, YELLOW, BLACK, WHITE, BLUE
}

class EnumDemo
{
    static void PrintHashCode(COLOR color)
    {
        switch (color)
        {
            case COLOR.RED:
                Console.WriteLine("Color is Red,    hashcode: " + COLOR.RED.GetHashCode());
                break;
            case COLOR.GREEN:
                Console.WriteLine("Color is Green,  hashcode: " + COLOR.GREEN.GetHashCode());
                break;
            case COLOR.YELLOW:
                Console.WriteLine("Color is Yellow, hashcode: " + COLOR.YELLOW.GetHashCode());
                break;
            case COLOR.BLACK:
                Console.WriteLine("Color is Black,  hashcode: " + COLOR.BLACK.GetHashCode());
                break;
            case COLOR.WHITE:
                Console.WriteLine("Color is White,  hashcode: " + COLOR.WHITE.GetHashCode());
                break;
            case COLOR.BLUE:
                Console.WriteLine("Color is Blue,   hashcode: " + COLOR.BLUE.GetHashCode());
                break;
        }
    }
    static void Main(string[] args)
    {
        PrintHashCode(COLOR.RED);
        PrintHashCode (COLOR.GREEN);
        PrintHashCode (COLOR.BLUE);
    }
}

Output:

Color is Red,    hashcode: 0
Color is Green,  hashcode: 1
Color is Blue,   hashcode: 5
Press any key to continue . . .

Explanation:

In the above program, we created an enum COLOR that contain constants with color names. Here, we also created a class EnumDemo that contains two static methods PrintHashCode() and Main().

In the PrintHashCode() method, we created a switch block, here we printed the hash-code of color constants based on enum constant passed into the method.

In the Main() method, we called the PrintHashCode() method with different values of a COLOR enum.

C# Enum Class Programs »


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