【茶包射手日記】專案編譯出現「缺少ExtensionAttribute ctor」錯誤 2015-01-09 09:49 PM 1 7,038 用Visual Studio 2013開啟某個古老VS2010專案,編譯時爆出以下錯誤: Missing compiler required member System.Runtime.CompilerServices.ExtensionAttribute..ctor 爬文找到一些討論(...