How to mark a method as obsolete or deprecated

Question

How do I mark a method as obsolete or deprecated using C

User · Answer

With ObsoleteAttribute you can to show the deprecated method  Obsolete attribute has three constructor          Obsolete   is a no parameter constructor and is a default using this attribute     Obsolete string message    in this format you can get message of why this method is deprecated     Obsolete string message  bool error    in this format message is very explicit but error means  in compilation time  compiler must be showing error and cause to fail compiling or not

User · Answer

Add an annotation to the method using the keyword Obsolete  Message argument is optional but a good idea to communicate why the item is now obsolete and or what to use instead  Example    System Obsolete  use myMethodB instead    void myMethodA

User · Answer

To mark as obsolete with a warning    Obsolete  private static void SomeMethod     You get a warning when you use it     And with IntelliSense     If you want a message    Obsolete  My message    private static void SomeMethod     Here s the IntelliSense tool tip     Finally if you want the usage to be flagged as an error    Obsolete  My message   true   private static void SomeMethod     When used this is what you get     Note  Use the message to tell people what they should use instead  not why it is obsolete

User · Answer

The shortest way is by adding the ObsoleteAttribute as an attribute to the method  Make sure to include an appropriate explanation    Obsolete  Method1 is deprecated  please use Method2 instead     public void Method1             You can also cause the compilation to fail  treating the usage of the method as an error instead of warning  if the method is called from somewhere in code like this    Obsolete  Method1 is deprecated  please use Method2 instead    true

[c#] How to mark a method as obsolete or deprecated?

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