How to use reflection to get information about an attribute

using System;//from ww  w . ja v a2s . c  o m
using System.Reflection;

[AttributeUsage(AttributeTargets.Class, AllowMultiple=true)]

public class CodeReviewAttribute: System.Attribute
{
    public CodeReviewAttribute(string reviewer, string date)
    {
        this.reviewer = reviewer;
        this.date = date;
    }
    public string Comment
    {
        get
        {
            return(comment);
        }
        set
        {
            comment = value;
        }
    }
    public string Date
    {
        get
        {
            return(date);
        }
    }
    public string Reviewer
    {
        get
        {
            return(reviewer);
        }
    }
    string reviewer;
    string date;
    string comment;
}

[CodeReview("Name1", "01-12-2000", Comment="comment1")]
[CodeReview("Name2", "01-01-2012", Comment="comment2")]
class Complex
{
}

class MainClass
{
    public static void Main()
    {
        Type type = typeof(Complex);
        foreach (CodeReviewAttribute att in
        type.GetCustomAttributes(typeof(CodeReviewAttribute), false))
        {
            Console.WriteLine("Reviewer: {0}", att.Reviewer);
            Console.WriteLine("Date: {0}", att.Date);
            Console.WriteLine("Comment: {0}", att.Comment);
        }
    }
}

using System;//w  w  w  .  jav a 2  s  .  com
using System.Reflection;

[AttributeUsage(AttributeTargets.Class)]
public class ClassTarget : Attribute
{
  public ClassTarget()
  {
  }
}

[AttributeUsage(AttributeTargets.Method )]
public class MethodTarget : Attribute
{
  public MethodTarget()
  {
  }
}

public class MyClass
{
  [MethodTarget]
  public int MyMethod()
  {
    return 5;
  }
}


class MainClass 
{
  public static void Main(string[] args) 
  {

    ClassTarget rs;
    MethodTarget rm;

    Assembly a = Assembly.LoadFrom("MyClass");

    foreach(Type t in a.GetTypes())
    {
      rs = (ClassTarget) Attribute.GetCustomAttribute(t, typeof(ClassTarget));
      if(rs != null)
      {
        foreach(MethodInfo m in t.GetMethods())
        {
          rm = (MethodTarget) Attribute.GetCustomAttribute(m, typeof(MethodTarget));
          if(rm != null)
          {
            Object o = Activator.CreateInstance(t);
            Object[] aa = new Object[0];
            int i = (int) m.Invoke(o, aa);
          }

        }
      }
    }


  }

}