垃圾回收器

指定垃圾回收代数

1GC.Collect(1); 
2GC.Collect(2);

强制立即进行垃圾回收

1GC.Collect(0, GCCollectionMode.Forced);

1// 在托管堆上分配标准对象
2object first = new object();
3object second = new object();
4object third = new object();
5object fourth = new object();
6
7// 这些将输出 '0'
8Console.WriteLine(GC.GetGeneration(first));
9Console.WriteLine(GC.GetGeneration(second));
10Console.WriteLine(GC.GetGeneration(third));
11Console.WriteLine(GC.GetGeneration(fourth));
12
13// 移除引用以使对象不可达
14second = null;
15fourth = null;
16
17// 强制收集第 0 代
18GC.Collect(0, GCCollectionMode.Forced);
19GC.WaitForPendingFinalizers();
20
21// 现在这些将输出 '1'，因为它们存活于本次回收
22Console.WriteLine(GC.GetGeneration(first));
23Console.WriteLine(GC.GetGeneration(third));