A custom attribute based on bool value : Attribute Definition : Attribute C# Examples

    
using  System;

public  class  TrueFalseAttribute  :  Attribute
{
    bool  bWritten;

    public  bool  Written()
    {
        return  bWritten;
    }

    public  TrueFalseAttribute(bool  Written)
    {
        bWritten  =  Written;
    }
}

[TrueFalseAttribute(true)]
public  class  Class1
{
}

[TrueFalseAttribute(false)]
public  class  Class2
{
}

class  MainClass
{
    public  static  void  Main()  
    {
        TrueFalseAttribute  u;
        Console.Write("Class1  TrueFalseAttribute  attribute:  ");
        u  =  (TrueFalseAttribute)  Attribute.GetCustomAttribute(typeof(Class1),  typeof(TrueFalseAttribute));
        Console.WriteLine(u.Written());
        Console.Write("Class2  TrueFalseAttribute  attribute:  ");
        u  =  (TrueFalseAttribute)  Attribute.GetCustomAttribute(typeof(Class2),  typeof(TrueFalseAttribute));
        Console.WriteLine(u.Written());
    }
}