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Исходный код вики Dispose

Версия 1.3 от Alexandr Fokin на 2023/02/15 23:08
Последние авторы
1 Реализация метода Dispose
2 [[https:~~/~~/learn.microsoft.com/ru-ru/dotnet/standard/garbage-collection/implementing-dispose>>https://learn.microsoft.com/ru-ru/dotnet/standard/garbage-collection/implementing-dispose]]
3
4 ----
5
6 |(% style="width:465px" %)Отчистка неуправляемых и управляемых ресурсов|(% style="width:1030px" %){{code language="C#"}}class BaseClassWithFinalizer : IDisposable
7 {
8 // To detect redundant calls
9 private bool _disposedValue;
10
11 ~BaseClassWithFinalizer() => Dispose(false);
12
13 // Public implementation of Dispose pattern callable by consumers.
14 public void Dispose()
15 {
16 Dispose(true);
17 GC.SuppressFinalize(this);
18 }
19
20 // Protected implementation of Dispose pattern.
21 protected virtual void Dispose(bool disposing)
22 {
23 if (!_disposedValue)
24 {
25 if (disposing)
26 {
27 // TODO: dispose managed state (managed objects)
28 }
29
30 // TODO: free unmanaged resources (unmanaged objects) and override finalizer
31 // TODO: set large fields to null
32 _disposedValue = true;
33 }
34 }
35 }{{/code}}
36 |(% style="width:465px" %)Отчистка управляемых ресурсов|(% style="width:1030px" %){{code language="C#"}}public sealed class Foo : IDisposable
37 {
38 private readonly IDisposable _disposable1;
39 private readonly IDisposable _disposable2;
40
41 public Foo()
42 {
43 _disposable1 = new Bar();
44 _disposable2 = new Bar();
45 }
46
47 public void Dispose()
48 {
49 _disposable1.Dispose();
50 _disposable2.Dispose();
51 }
52 }{{/code}}
53 |(% style="width:465px" %)Наследование. Отчистка неуправляемых и управляемых ресурсов.|(% style="width:1030px" %){{code language="C#"}}class DerivedClassWithFinalizer : BaseClassWithFinalizer
54 {
55 // To detect redundant calls
56 private bool _disposedValue;
57
58 ~DerivedClassWithFinalizer() => this.Dispose(false);
59
60 // Protected implementation of Dispose pattern.
61 protected override void Dispose(bool disposing)
62 {
63 if (!_disposedValue)
64 {
65 if (disposing)
66 {
67 // TODO: dispose managed state (managed objects).
68 }
69
70 // TODO: free unmanaged resources (unmanaged objects) and override a finalizer below.
71 // TODO: set large fields to null.
72 _disposedValue = true;
73 }
74
75 // Call the base class implementation.
76 base.Dispose(disposing);
77 }
78 }{{/code}}