Исходный код вики Change notify

Редактировал(а) Alexandr Fokin 2024/08/25 18:10
Последние авторы
1 |(% style="width:81px" %) |(% style="width:1356px" %)(((
2 C# - Intercepting property changes in subclasses
3 [[https:~~/~~/stackoverflow.com/questions/6078859/c-sharp-intercepting-property-changes-in-subclasses>>https://stackoverflow.com/questions/6078859/c-sharp-intercepting-property-changes-in-subclasses]]
4
5 ObservableObject
6 [[https:~~/~~/learn.microsoft.com/ru-ru/dotnet/communitytoolkit/mvvm/observableobject>>https://learn.microsoft.com/ru-ru/dotnet/communitytoolkit/mvvm/observableobject]]
7 )))
8 |(% style="width:81px" %) |(% style="width:1356px" %)[[Привязка>>doc:Разработка.NET.Frameworks and Apps.GUI.WPF.Механизмы.Привязка.WebHome]]
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10 |{{code language="c#"}}/// <summary>
11 /// Контейнер с INotifyPropertyChanged
12 /// </summary>
13 public class ObservableContainer<T>
14 : INotifyPropertyChanged,
15 IEquatable<ObservableContainer<T>>,
16 IEquatable<T>
17 {
18 #region prop
19
20 private T _data;
21
22 public event PropertyChangedEventHandler PropertyChanged;
23
24 public T Data
25 {
26 get => _data;
27 set
28 {
29 _data = value;
30 PropertyChanged?.Invoke(
31 this,
32 new PropertyChangedEventArgs(nameof(Data))
33 );
34 }
35 }
36
37 #endregion
38
39
40 #region ctor
41
42 public ObservableContainer() { }
43 public ObservableContainer(T data)
44 {
45 _data = data;
46 }
47
48 #endregion
49
50
51 #region override
52
53 public override string ToString()
54 {
55 return _data?.ToString() ?? "null";
56 }
57
58 public override int GetHashCode()
59 {
60 return _data?.GetHashCode() ?? 0;
61 }
62
63 public override bool Equals(object obj)
64 {
65 if (obj is ObservableContainer<T> o1)
66 {
67 return Equals(other: o1);
68 }
69 else if (obj is T o2)
70 {
71 return Equals(other: o2);
72 }
73
74 return false;
75 }
76
77 public bool Equals(ObservableContainer<T> other)
78 {
79 if (other.Data == null && Data == null)
80 {
81 return true;
82 }
83 if (other.Data != null)
84 {
85 other.Data.Equals(Data);
86 }
87 if (Data != null)
88 {
89 Data.Equals(other.Data);
90 }
91
92 return false;
93 }
94
95 public bool Equals(T other)
96 {
97 if (other == null && Data == null)
98 {
99 return true;
100 }
101 if (other != null)
102 {
103 other.Equals(Data);
104 }
105 if (Data != null)
106 {
107 Data.Equals(other);
108 }
109
110 return false;
111 }
112
113 #endregion
114
115 #region operator
116
117 public static implicit operator ObservableContainer<T>(T x)
118 {
119 return new ObservableContainer<T>(x);
120 }
121 public static implicit operator T(ObservableContainer<T> x)
122 {
123 return x.Data;
124 }
125
126 #endregion
127 }{{/code}}
128 |{{code language="c#"}}public class TestModel2
129 {
130 public ObservableContainer<string> Property1 { get; set; }
131 = new ObservableContainer<string>();
132 public ObservableContainer<string> Property2 { get; set; }
133 = new ObservableContainer<string>();
134 }{{/code}}
135 |{{code language="xml"}}<UniformGrid Rows="2" Columns="2">
136 <TextBox Text="Prop1.Data"></TextBox>
137 <TextBox Text="{Binding Path=Property1.Data, Mode=OneWay}"></TextBox>
138 <Button Content="Right Bottom" ></Button>
139
140 <TextBox Text="Prop2.Data"></TextBox>
141 <TextBox Text="{Binding Path=Property2.Data, Mode=TwoWay}"></TextBox>
142 <Button Content="Right Bottom" Click="Button_Click" ></Button>
143 </UniformGrid>{{/code}}
144 )))
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