GetEnumFromString.cs

using System;

class Program
{
    enum PetType
    {
        None,
        Cat = 1,
        Dog = 2
    }

    static void Main()
    {
        // A.
        // Possible user input:
        string value = "Dog";

        // B.
        // Try to convert the string to an enum:
        PetType pet = (PetType)Enum.Parse(typeof(PetType), value);

        // C.
        // See if the conversion succeeded:
        if (pet == PetType.Dog)
        {
            Console.WriteLine("Equals dog.");
        }
    }
}