浅析C#静态类,静态构造函数,静态变量

public class Cow
{
public static int count;
private int id;
public Cow()
{
id = ++count;
}
}

static void Main(string[] args)
{
Console.WriteLine(Cow.count);
Cow cow1 = new Cow();
Cow cow2 = new Cow();
Console.WriteLine(Cow.count);
} 

public class Cow
{
public static int count;
private int id;
public Cow()
{
id = ++count;
}
static Cow()
{
count = new Random().Next(100);
}
}

static void Main(string[] args) { Cow cow1 = new Cow(); Console.WriteLine("创建第一个Cow实例后count为："+ Cow.count); Cow cow2 = new Cow(); Console.WriteLine("创建第二个Cow实例后count为：" + Cow.count); }

public class Cow
{
public static int count;
private int id;
public static int whatever;
public Cow()
{
id = ++count;
}
static Cow()
{
count = new Random().Next(100);
whatever = count + 10;
Console.WriteLine("静态构造函数被触发后count为：" + Cow.count);
Console.WriteLine("静态构造函数被触发后whatever为：" + Cow.whatever);
}
}

static void Main(string[] args)
{
Cow.count = 100;
Cow cow1 = new Cow();
Console.WriteLine("创建第一个Cow实例后count为："+ Cow.count);
Cow cow2 = new Cow();
Console.WriteLine("创建第二个Cow实例后count为：" + Cow.count); 
} 

public class Logger
{ private static int logNumber = 0;
static public void InitializeLogging()
{
Console.WriteLine("日志初始化");
}
static public void CloseLog()
{
Console.WriteLine("日志关闭");
}
static public void LogMsg(string msg)
{
Console.WriteLine("日志编号为：" + logNumber + ":" + msg);
}
public void DoSth()
{
Console.WriteLine("我不是静态方法~~");
}
}

static void Main(string[] args)
{
Logger.InitializeLogging();
Logger.LogMsg("日志被记录下了~~");
Logger.CloseLog();
Logger logger = new Logger();
logger.DoSth();
}

public static class Logger
{
private static int logNumber = 0;
static public void InitializeLogging()
{
Console.WriteLine("日志初始化");
}
static public void CloseLog()
{
Console.WriteLine("日志关闭");
}
static public void LogMsg(string msg)
{
Console.WriteLine("日志编号为：" + logNumber + ":" + msg);
}
}

static void Main(string[] args)
{
Logger.InitializeLogging();
Logger.LogMsg("日志被记录下了~~");
Logger.CloseLog();
}