Reflecting on Attributes : Attributes Reflection « Attribute « C# / CSharp Tutorial

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C# / CSharp Tutorial » Attribute » Attributes Reflection 
10. 5. 1. Reflecting on Attributes
//Code revised from 
//A Programmer's Introduction to C# 2.0, Third Edition

using System;
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);
        }
    }
}
Reviewer: Name2
Date: 01-01-2012
Comment: comment2
Reviewer: Name1
Date: 01-12-2000
Comment: comment1
10. 5. Attributes Reflection
10. 5. 1. Reflecting on Attributes
10. 5. 2. Retrieve Attribute by using reflection
10. 5. 3. Use Reflection to get the Attribute
10. 5. 4. Use the GetCustomAttributes method
10. 5. 5. Load class method by Attribute
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