How to get enum value by string or int

Question

How can I get the enum value if I have the enum string or enum int value. eg: If i have an enum as follows:

public enum TestEnum
{
    Value1 = 1,
    Value         


        

Answer 1

Could be much simpler if you use TryParse or Parse and ToObject methods.

public static class EnumHelper
{
    public static  T GetEnumValue(string str) where T : struct, IConvertible
    {
        Type enumType = typeof(T);
        if (!enumType.IsEnum)
        {
            throw new Exception("T must be an Enumeration type.");
        }
        T val;
        return Enum.TryParse(str, true, out val) ? val : default(T);
    }

    public static T GetEnumValue(int intValue) where T : struct, IConvertible
    {
        Type enumType = typeof(T);
        if (!enumType.IsEnum)
        {
            throw new Exception("T must be an Enumeration type.");
        }

        return (T)Enum.ToObject(enumType, intValue);
    }
}

As noted by @chrfin in comments, you can make it an extension method very easily just by adding this before the parameter type which can be handy.