Enum - NotIn
A T extension method to determines whether the object is not equal to any of the provided values.
private static void Display(Color color) { // C# Extension Method: Enum - NotIn if (color.NotIn(Color.DarkSeaGreen, Color.RosyBrown, Color.RosyBrown)) { Console.WriteLine("{0} doesn't exists in the list.", color); } else { Console.WriteLine("{0} exists in the list.", color); } } public static void Main() { Display(Color.BlanchedAlmond); Display(Color.RosyBrown); } } public enum Color { [Description("Blanched Almond Color")] BlanchedAlmond = 1, [Description("Dark Sea Green Color")] DarkSeaGreen = 2, [Description("Deep Sky Blue Color")] DeepSkyBlue = 3, [Description("Rosy Brown Color")] RosyBrown = 4
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using System; public static partial class Extensions { /// <summary> /// A T extension method to determines whether the object is not equal to any of the provided values. /// </summary> /// <param name="this">The object to be compared.</param> /// <param name="values">The value list to compare with the object.</param> /// <returns>true if the values list doesn't contains the object, else false.</returns> public static bool NotIn(this Enum @this, params Enum[] values) { return Array.IndexOf(values, @this) == -1; } }