using System.Text;
public class Example
{
public static void Main()
{
PrintAuthorInfo(typeof(FirstClass));
PrintAuthorInfo(typeof(SecondClass));
PrintAuthorInfo(typeof(ThirdClass));
}
private static void PrintAuthorInfo(System.Type t)
{
// 리플렉션을 사용하여 속성정보가져오기.
System.Attribute[] attrs = System.Attribute.GetCustomAttributes(t); // Reflection.
// 속정정보 출력하기.
foreach (System.Attribute attr in attrs)
{
if (attr is Author)
{
Author a = (Author)attr;
System.Console.WriteLine(" {0}, version {1:f}", a.GetName(), a.version);
}
}
}
}
[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Struct, AllowMultiple = true /* 멀티 속정을 지원*/) ]
public class Author : System.Attribute
{
string name;
public double version;
public Author(string name)
{
this.name = name;
version = 1.0;
}
public string GetName()
{
return name;
}
}
[Author("codekiller")]
public class FirstClass
{
}
public class SecondClass
{
}
[Author("codekiller"), Author("codekiller2", version = 2.0)]
public class ThirdClass
{
}