Module Module1

    Sub Main()
        ' The line below causes the compiler to issue a warning:
        ' 'App.SomeDeprecatedMethod()' is obsolete: 'Do not call this method.'
        SomeDeprecatedMethod()

    End Sub
    ' The method below is marked with the ObsoleteAttribute. 
    ' Any code that attempts to call this method will get a warning.
    <Obsolete("Do not call this method.")> Private Sub SomeDeprecatedMethod()

    End Sub
End Module

using System;

public sealed class App {
   static void Main() {      
      // The line below causes the compiler to issue a warning:
      // 'App.SomeDeprecatedMethod()' is obsolete: 'Do not call this method.'
      SomeDeprecatedMethod();
   }

   // The method below is marked with the ObsoleteAttribute. 
   // Any code that attempts to call this method will get a warning.
   [Obsolete("Do not call this method.")]
   private static void SomeDeprecatedMethod() { }
}

using namespace System;


// The method below is marked with the ObsoleteAttribute.
// Any code that attempts to call this method will get a warning.
[Obsolete("Do not call this method.")]
void SomeDeprecatedMethod()
{
}

int main()
{
    // The line below causes the compiler to issue a warning:
    // 'SomeDeprecatedMethod()': marked as obsolete
    // Message: 'Do not call this method.'
    SomeDeprecatedMethod();
}