C# 获取名字的几种方法

static void Main(string[] args)
{
    Console.WriteLine(nameof(Program)); //编译时动作
    Console.WriteLine(typeof(Program).Name);
    Console.WriteLine(new Program().GetType().Name);
    Console.WriteLine(new StackTrace().GetFrame(0).GetMethod().Name);
    Console.WriteLine(System.Reflection.MethodBase.GetCurrentMethod().Name);


    Console.Read();
}

还可以从表达式中取名字

  Console.WriteLine(GetPropertyName<Persion>(p => p.Age));

 private static string GetPropertyName<T>(Expression<Func<T, object>> expr)
{
  switch (expr.Body)
  {
      case MemberExpression memberExpression:
          return memberExpression.Member.Name;
      case UnaryExpression unaryExpression:
          if (unaryExpression.Operand is MemberExpression expression)
          {
              return expression.Member.Name;
          }

          break;
      default:
          break;
  }

  return "";
}  

CallerMemberName 特性

CallerMemberName 也是一个编译时的操作
编写

static void SetProperty([CallerMemberName] string propertyName = null)
        {
            Console.WriteLine(propertyName);
        }

        static void Main(string[] args)
        {
            SetProperty();
        }

编译后

private static void SetProperty([CallerMemberName] string propertyName = null)
	{
		Console.WriteLine(propertyName);
	}

	private static void Main(string[] args)
	{
		SetProperty("Main");
	}