enumeration extensions helpers

PlayGround/Program.cs

@@ -10,6 +10,12 @@
     new(1, "Lucas", FooType.Foo1), new(2, "Teles", FooType.Foo2)
 };
 
+var values = Enum.GetValues(typeof(FooType)).GetEnumerator().ToEnumerable().ToArray();
+
+var foo = EnumerationExtensions.GetDescription(values[0]!);
+var bar = EnumerationExtensions.GetEnumMemberValue(values[1]!);
+Console.WriteLine($"{foo} and {bar}");
+
 var json = JsonSerializer.Serialize(persons);
 Console.WriteLine(json);
 

src/EnumerablePlus/LinqEnumerablePlus.cs

@@ -1,3 +1,4 @@
+using System.Collections;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 
@@ -271,4 +272,13 @@ public static IEnumerable<T> ToEnumerable<T>(this IEnumerator<T> enumerator)
         while (enumerator.MoveNext())
             yield return enumerator.Current;
     }
+
+    /// <summary>
+    /// Creates an IEnumerable from an IEnumerator
+    /// </summary>
+    public static IEnumerable<object?> ToEnumerable(this IEnumerator enumerator)
+    {
+        while (enumerator.MoveNext())
+            yield return enumerator.Current;
+    }
 }

src/EnumerationExtensions.cs

@@ -8,14 +8,30 @@
 /// </summary>
 public static class EnumerationExtensions
 {
+    static object? GetAttribute(Type enumType, Type attributeType, string? value) =>
+        value is null || !enumType.IsEnum
+            ? null
+            : enumType
+                .GetMember(value)
+                .SelectMany(p => p.GetCustomAttributes(attributeType, true))
+                .FirstOrDefault();
+
     static TAttr? GetAttribute<TEnum, TAttr>(this TEnum value)
         where TEnum : Enum
         where TAttr : Attribute =>
-        value
-            .GetType()
-            .GetMember(value.ToString())
-            .SelectMany(p => p.GetCustomAttributes(typeof(TAttr), true))
-            .FirstOrDefault() as TAttr;
+        GetAttribute(value.GetType(), typeof(TAttr), value.ToString()) as TAttr;
+
+    /// <summary>
+    /// Get description from EnumMember.Value Attribute
+    /// </summary>
+    public static string? GetEnumMemberValue(object @enum) =>
+        GetAttribute(@enum.GetType(), typeof(EnumMemberAttribute), @enum.ToString()) is
+            EnumMemberAttribute
+        {
+            Value: { } description,
+        }
+            ? description
+            : @enum.ToString();
 
     /// <summary>
     /// Get enum description from EnumMember.Value Attribute
@@ -41,6 +57,18 @@ public static class EnumerationExtensions
         : @enum.ToString();
 
 
+    /// <summary>
+    /// Get description from DescriptionAttribute
+    /// </summary>
+    public static string? GetDescription(object @enum) =>
+        GetAttribute(@enum.GetType(), typeof(DescriptionAttribute), @enum.ToString()) is
+            DescriptionAttribute
+        {
+            Description: { } description,
+        }
+            ? description
+            : @enum.ToString();
+
     static TEnum? GetEnumByString<TEnum>(
         string enumDescription,
         Func<TEnum, string> getString,