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January 4, 2016 05:19
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Missing enum BCL extensions
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using System; | |
using System.Collections.Generic; | |
using System.Globalization; | |
using System.Linq; | |
namespace iFX.Core | |
{ | |
public static class EnumExtensions | |
{ | |
public static T FromString<T>(this Enum e, string value) | |
{ | |
return (T)Enum.Parse(typeof(T), value); | |
} | |
/// <summary> | |
/// Gets all items for an enum value. | |
/// </summary> | |
/// <typeparam name="T"></typeparam> | |
/// <param name="value">The value.</param> | |
/// <returns></returns> | |
public static IEnumerable<T> GetAllItems<T>(this Enum value) | |
{ | |
foreach (object item in Enum.GetValues(typeof (T))) | |
{ | |
yield return (T) item; | |
} | |
} | |
/// <summary> | |
/// Gets all items for an enum type. | |
/// </summary> | |
/// <typeparam name="T"></typeparam> | |
/// <param name="value">The value.</param> | |
/// <returns></returns> | |
public static IEnumerable<T> GetAllItems<T>() where T : struct | |
{ | |
foreach (object item in Enum.GetValues(typeof (T))) | |
{ | |
yield return (T) item; | |
} | |
} | |
/// <summary> | |
/// Gets all combined items from an enum value. | |
/// </summary> | |
/// <typeparam name="T"></typeparam> | |
/// <param name="value">The value.</param> | |
/// <returns></returns> | |
/// <example> | |
/// Displays ValueA and ValueB. | |
/// <code> | |
/// EnumExample dummy = EnumExample.Combi; | |
/// foreach (var item in dummy.GetAllSelectedItems<EnumExample>()) | |
/// { | |
/// Console.WriteLine(item); | |
/// } | |
/// </code> | |
/// </example> | |
public static IEnumerable<T> GetAllSelectedItems<T>(this Enum value) | |
{ | |
int valueAsInt = Convert.ToInt32(value, CultureInfo.InvariantCulture); | |
foreach (object item in Enum.GetValues(typeof (T))) | |
{ | |
int itemAsInt = Convert.ToInt32(item, CultureInfo.InvariantCulture); | |
if (itemAsInt == (valueAsInt & itemAsInt)) | |
{ | |
yield return (T) item; | |
} | |
} | |
} | |
/// <summary> | |
/// Determines whether the enum value contains a specific value. | |
/// </summary> | |
/// <param name="value">The value.</param> | |
/// <param name="request">The request.</param> | |
/// <returns> | |
/// <c>true</c> if value contains the specified value; otherwise, <c>false</c>. | |
/// </returns> | |
/// <example> | |
/// <code> | |
/// EnumExample dummy = EnumExample.Combi; | |
/// if (dummy.Contains<EnumExample>(EnumExample.ValueA)) | |
/// { | |
/// Console.WriteLine("dummy contains EnumExample.ValueA"); | |
/// } | |
/// </code> | |
/// </example> | |
public static bool Contains<T>(this Enum value, T request) | |
{ | |
int valueAsInt = Convert.ToInt32(value, CultureInfo.InvariantCulture); | |
int requestAsInt = Convert.ToInt32(request, CultureInfo.InvariantCulture); | |
if (requestAsInt == (valueAsInt & requestAsInt)) | |
{ | |
return true; | |
} | |
return false; | |
} | |
} | |
} |
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