摘要：
https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/is 原来的版本 优化后的版本 涉及到的新知识点 Type pattern When using the type pattern to perfor 阅读全文
摘要：
https://blogs.msdn.microsoft.com/wenlong/2006/01/11/how-to-initialize-hosted-wcf-services/ Using AppInitialize The above global.asax does not work for 阅读全文