Roger Luo

摘要： 1. Show current time 2. Calculate execution time Use StopWatch classs, which locates in System.Diagnostics namespace. static void Main(string[] args){ Stopwatch s1 = new Stopwatch(... 阅读全文

摘要： OSI model The Open Systems Interconnection (OSI) model (ISO/IEC 7498-1) is a product of the Open Systems Interconnection effort at the International Organization for Standardization. It is a prescrip... 阅读全文