A class that uses generics to parse and get a value from an enumerator member with a StringValueAttribute.

StringEnum.cs

/// <summary>
/// Provides the tools needed to get in a easy, fast way
/// the string value of an enumerator member assigned
/// with <see cref="StringValueAttribute"/>.
/// </summary>
/// <typeparam name="E">The type of the enumerator.</typeparam>
public static class StringEnum<E>
{
    /// <summary>
    /// Gets the enumerator member's string value.
    /// </summary>
    /// <param name="e">The enumerator member to get its string value.</param>
    /// <returns>The argument's string value..</returns>
    public static string Value(E e)
    {
        StringValueAttribute[] attrs = typeof(E).GetField(e.ToString()).GetCustomAttributes(typeof(StringValueAttribute), false) as StringValueAttribute[];
        if (attrs != null && attrs.Length > 0)
            return attrs[0].Value;
        else
            return Enum.GetName(e.GetType(), e);
    }

    /// <summary>
    /// Returns the enumerator member that matches a given
    /// string value.
    /// </summary>
    /// <param name="value">The string value to get its enumerator member.</param>
    /// <returns>The matching enumerator member.</returns>
    public static E Parse(string value)
    {
        return (E)Enum.Parse(typeof(E), value);
    }
}