The System.Enum Type: see if a specific value is a defined enum member : System.Enum « Data Type « C# / CSharp Tutorial

using System;

enum Color
{
    red,
    green,
    yellow
}

public class MainClass
{
    public static void Main()
    {

        
        
        bool defined = Enum.IsDefined(typeof(Color), 5);
        Console.WriteLine("5 is a defined value for Color: {0}", defined);    
        
    }
}

5 is a defined value for Color: False

2.41.System.Enum
	2.41.1.	The System.Enum Type: GetValues, GetName and GetType
	2.41.2.	The System.Enum Type: GetNames
	2.41.3.	The System.Enum Type: enum value from a string, ignore case
	2.41.4.	The System.Enum Type: see if a specific value is a defined enum member
	2.41.5.	Get underlying type of an enum: Enum.GetUnderlyingType()
	2.41.6.	Get an enum's type, hex and value: Enum.Format()
	2.41.7.	Parse a string to an enum: Enum.Parse
	2.41.8.	Get all stats for an enum: Enum.GetValues()
	2.41.9.	Loop through an enum data type
	2.41.10.	Enum.IsDefined()
	2.41.11.	Enum elements compare