The c enumeration value increase feature illustrates the of recommendation

Adds a string description to each value of an enumeration type through attributes for printing or display.

Custom print characteristics

[AttributeUsage(AttributeTargets.Field)]
public class EnumDisplayAttribute : Attribute
{
 public EnumDisplayAttribute(string displayStr)
 {
  Display = displayStr;
 }
 public string Display
 {
  get;
  private set;
 }
}

The print attribute definition is simple and contains only one string attribute.

Define 1 enumeration

public enum TestEnum
{
 [EnumDisplay("1")]
 one,
 [EnumDisplay("2")]
 two,
 three
}

Enumeration types one and two both add one printing feature.

Adding enumeration expansion method to obtain printing characteristic value

public static class TestEnumExtentions
{
 public static string Display(this TestEnum t)
 {
  var fieldName = Enum.GetName(typeof(TestEnum), t);
  var attributes = typeof(TestEnum).GetField(fieldName).GetCustomAttributes(false);
  var enumDisplayAttribute = attributes.FirstOrDefault(p => p.GetType().Equals(typeof(EnumDisplayAttribute))) as EnumDisplayAttribute;
  return enumDisplayAttribute == null ? fieldName : enumDisplayAttribute.Display;
 }
}

Gets the enumeration filed string corresponding to the enumeration value var fieldName = Enum.GetName(typeof(TestEnum), t);

Get all custom feature sets corresponding to filed var attributes = typeof(TestEnum).GetField(fieldName).GetCustomAttributes(false);

Get EnumDisplayAttribute features var enumDisplayAttribute = attributes.FirstOrDefault(p => p.GetType().Equals(typeof(EnumDisplayAttribute))) as EnumDisplayAttribute ;

Returns its Display value if there is an EnumDisplayAttribute attribute, otherwise returns an filed string return enumDisplayAttribute == null ? fieldName : enumDisplayAttribute.Display;

Use sample

class Program
{
 static void Main(string[] args)
 {
  TestEnum e = TestEnum.one;
  Console.WriteLine(e.Display());
  TestEnum e1 = TestEnum.three;
  Console.WriteLine(e1.Display());
  Console.ReadKey();
 }
}

Output:

1 
three
 Extended description 

This method can not only add descriptive attributes to enumerated types, but also add custom attributes to attributes and methods of custom types. .

When using reflection to make GetField(string name) GetMethod(string name) GetProperty(string name) Equivalent requires a string

You can use nameof when getting a custom type property or method name string

public class T
{
 public void Get()
 { }
 public int Num { get; set; }
}
T tt = new T();
Console.WriteLine(nameof(tt.Num));
Console.WriteLine(nameof(tt.Get));