C# - How 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#? By Nidhi Last updated : March 29, 2023

Get the Hash-Code of Enum Constants

To get the hash code of Enum constants, we use GetTypeCode() method.

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

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# - How 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); } }

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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.

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