is c# obsolete code example

Example 1: c# mark as deprecated

[Obsolete("Method1 is deprecated, please use Method2 instead.")]
public void Method1()
{ … }

Example 2: c# obsolete class

//The last parameter (true|false) determine if the use of class, property,
//function, etc is considered as error or not

[ObsoleteAttribute("Here you say why this class is obsolete", false)]
public class MyClass
{
   [ObsoleteAttribute("Here you say why this property is obsolete", false)]
   public string MyProperty
   {
       get {}
       set {}
   }
}