Compiler Error CS0619

'member' is obsolete: 'text'

A class member was marked with the Obsolete attribute, such that an error will be issued when the class member is referenced.

Example

The following sample generates CS0619:

using System;

public class C
{
    [Obsolete("Use NewMethod instead", true)] // generates an error on use
    public static void OldMethod()
    {
    }

    // this is the method you should be using
    public static void NewMethod()
    {
    }  
}

class MyClass
{
   public static void Main()
   {
      C.OldMethod();   // CS0619
   }
}