How to mark a class as Obsolete or Deprecated in C# ?

Sometimes , you may want to mark a class or method as deprecated so that the you dont want to use the class any more and also want to let know , other developers that the class is obsolete .

You can do that by using the Obsolete attribute as shown below . The Obsolete attribute also includes 2nd parameter (boolean) . When this valus is false , only a warning is shown when building the project . When this valus is true , it shows an compiler error.

How to mark a class as Obsolete or Deprecated in C# ?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AbundantcodeConsole
{

    class Program
    {
        static void Main(string[] args)
        {
            Employee emp = new Employee();

            Console.WriteLine("Welcome to Abundantcode.com");
            Console.ReadLine();
        }
    }
    [Obsolete("This class is deprecated", true)]
    public class Employee
    {
        public string Name { get; set; }
    }
}

C#
​x
 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
​
namespace AbundantcodeConsole
{
​
    class Program
    {
        static void Main(string[] args)
        {
            Employee emp = new Employee();
​
            Console.WriteLine("Welcome to Abundantcode.com");
            Console.ReadLine();
        }
    }
    [Obsolete("This class is deprecated", true)]
    public class Employee
    {
        public string Name { get; set; }
    }
}

How to mark a class as Obsolete or Deprecated in C# ?

Tags : attributes, C#, deprecated, Obsolete, tutorials

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How to mark a class as Obsolete or Deprecated in C# ?

How to mark a class as Obsolete or Deprecated in C# ?

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How to mark a class as Obsolete or Deprecated in C# ?

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