C# | Type.GetEnumValues() Method

Type.GetEnumValues() Method is used to return an array of the values of the constants in the current enumeration type.
Syntax:

public virtual Array GetEnumValues ();

Return Value: This method returns an array which contains the values. The elements of the array are sorted by the binary values i.e. the unsigned values of the enumeration constants.
Exception: This method will give ArgumentException if the current type is not an enumeration.
Below programs illustrate the use of the above-discussed method:
Example 1:

csharp

// C# program to demonstrate the
// Type.GetEnumValues() Method
using System;
using System.Globalization;
using System.Reflection;

class GFG {

    // Defining enum ABC
    enum ABC { A,
               B,
               C,
               D,
               E,
               F }

    // Main Method
    public static void Main()
    {

        // try-catch block to
        // handle exceptions
        try {

            // Creating and initializing object
            // of ABC with instance of enum ABC
            ABC a = ABC.A;

            // Declaring and initializing
            // object of Type
            Type type = a.GetType();

            // Getting an array of the values
            // of the constants
            // By using GetEnumValues() method
            Array obj = type.GetEnumValues();

            // Display values of the constants
            Console.Write("Values of the constants is : {0} ", obj);
        }

        // catch ArgumentException here
        catch (ArgumentException e)
        {
            Console.WriteLine("The current type is not an enumeration.");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

Output:

Values of the constants is : GFG+ABC[] 

Example 2: For ArgumentException

csharp

// C# program to demonstrate the
// Type.GetEnumValues() Method
using System;
using System.Globalization;
using System.Reflection;

class GFG {

    // Defining enum ABC
    enum ABC { A,
               B,
               C,
               D,
               E,
               F }

    // Main Method
    public static void Main()
    {

        // try-catch block to
        // handle exceptions
        try {

            // Creating and initializing object
            // of ABC with instance of enum ABC
            ABC a = ABC.A;

            // Declaring and initializing
            // object of Type
            Type type = typeof(int);

            // Getting an array of the values
            // of the constants
            // By using GetEnumValues() method
            Array obj = type.GetEnumValues();

            // Display values of the constants
            Console.Write("Values of the constants is : {0} ", obj);
        }

        // catch ArgumentException here
        catch (ArgumentException e)
        {
            Console.WriteLine("The current type is not an enumeration.");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

Output:

The current type is not an enumeration.
Exception Thrown: System.ArgumentException

Reference:

• https://docs.microsoft.com/en-us/dotnet/api/system.type.getenumvalues?view=netframework-4.8