https://orotiyamatano.hatenablog.com/entry/2019/01/15/The_type_or_namespace_name_%27xxxxxxx%27_could_not_be_found_%28are_you_missing_a_using_directive_or_an_assembly_reference%3F%29_%E3%81%A8%E3%81%84%E3%81%86%E3%82%A8%E3%83%A9%E3%83%BC2019-01-15T22:07:14+09:00https://orotiyamatano.hatenablog.com/entry/2019/01/04/2018%E5%B9%B4%E3%81%AE%E6%8C%AF%E3%82%8A%E8%BF%94%E3%82%8A%E3%81%A82019%E5%B9%B4%E3%81%AE%E6%8A%B1%E8%B2%A02019-01-17T21:45:15+09:00