https://docs.microsoft.com/en-us/dyn...considerations
Цитата:
Some methods will be attributed as obsolete to signal that they will be fully deprecated in the future. Any compiler warning that is generated due to the calling or wrapping of an obsolete method should be investigated to ensure that the expected code path still exists. In some cases, Microsoft code will directly call the new method in place of the obsolete method. When this happens, the code built around the obsolete method will not execute when expected.