break 语句 static void Main(string[] args) { int i = 0; while (true) { if (i == args.Length) break; Console.WriteLine(args[i++]); }}
continue 语句 static void Main(string[] args) { int i = 0; while (true) { Console.WriteLine(args[i++]); if (i < args.Length) continue; break; }}
return 语句 static int F(int a, int b) { return a + b;}static void Main() { Console.WriteLine(F(1, 2)); return;}
throw 语句和 try 语句 static int F(int a, int b) { if (b == 0) throw new Exception("Divide by zero"); return a / b;}static void Main() { try { Console.WriteLine(F(5, 0)); } catch(Exception e) { Console.WriteLine("Error"); }}
checked 和 unchecked 语句 static void Main() { int x = Int32.MaxValue; Console.WriteLine(x + 1); // Overflow checked { Console.WriteLine(x + 1); // Exception } unchecked { Console.WriteLine(x + 1); // Overflow }}
lock 语句 static void Main() { A a = ...; lock(a) { a.P = a.P + 1; }}
using 语句 static void Main() { using (Resource r = new Resource()) { r.F(); }}
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