Numeric constants in enum (c#)

Question

I\'m creating this selectbox in a SharePoint web part and need to have a drop down with the current version so I need to use an Enum.

public enum SelectVersionEn         


        

Answer 1

One way you could have numeric values associated with enums is by using the description attribute. For example you might have the enum:

[Serializable]
public enum SelectVersionEnum
{
    [Description("2007")]
    v2007,
    [Description("2010")]
    v2010
}

You could then write an extension method to get the numeric value you are looking for.

public static string Description(this Enum value)
{
    var type = value.GetType();

    var name = Enum.GetName(type, value);

    if (name != null)
    {
        if (type.GetField(name) != null)
        {
            var attr = Attribute.GetCustomAttribute(type.GetField(name), typeof(DescriptionAttribute)) as DescriptionAttribute;

            return attr != null ? attr.Description : name;
        }
    }

    return null;

} // end

You would use it like this:

var version = SelectVersionEnum.v2007.Description();