C ＃ learning notes: structure of CS documents

1. The first line of the program using System; using Keyword is used to include... In the program System Namespace . A program usually has more than one using sentence

2. The next line is namespace Statement . One namespace Is a series of classes . WebApplication1  Namespace contains classes Program.

3. The next line is class Statement . class Program Contains the data and method statements used by the program . class - General contains multiple methods . Method defines the behavior of the class . ad locum ,Program Class has only one individual Main Method .

4. The next line defines Main Method , It's all C# The entry point of the program .Main Method describes what action the class will do when executing .

5. Main Method specifies its behavior through statements in the method body .