回答編集履歴
2
見直しキャンペーン中
test
CHANGED
@@ -1,203 +1,102 @@
|
|
1
1
|
horaihoraiさんのほうではすでに解決されていますが、第三者視点ではわかりにくいところもあるのでまとめさせていただきます。
|
2
2
|
|
3
|
+
```xml:Left.xaml
|
4
|
+
<UserControl
|
5
|
+
x:Class="Questions348249.Left"
|
6
|
+
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
|
7
|
+
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
|
8
|
+
<StackPanel Name="Width">
|
9
|
+
<Button Command="{Binding Command}" Content="Button" />
|
10
|
+
<StackPanel Width="{Binding LeftWidth}">
|
11
|
+
<Rectangle Height="30" Fill="Red" />
|
12
|
+
</StackPanel>
|
13
|
+
</StackPanel>
|
14
|
+
</UserControl>
|
15
|
+
```
|
3
16
|
|
17
|
+
```xml:Right.xaml
|
18
|
+
<UserControl
|
19
|
+
x:Class="Questions348249.Right"
|
20
|
+
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
|
21
|
+
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
|
22
|
+
<StackPanel Name="Width">
|
23
|
+
<Button Command="{Binding LeftRight.Command}" Content="Button" />
|
24
|
+
<StackPanel Width="{Binding LeftRight.RightWidth}">
|
25
|
+
<Rectangle Height="30" Fill="Blue" />
|
26
|
+
</StackPanel>
|
27
|
+
</StackPanel>
|
28
|
+
</UserControl>
|
29
|
+
```
|
4
30
|
|
5
|
-
```xaml
|
31
|
+
```xml:MainWindow.xaml
|
32
|
+
<Window
|
33
|
+
x:Class="Questions348249.MainWindow"
|
34
|
+
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
|
35
|
+
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
|
36
|
+
xmlns:userControls="clr-namespace:Questions348249"
|
37
|
+
Width="800"
|
38
|
+
Height="450">
|
39
|
+
<StackPanel HorizontalAlignment="Center" Orientation="Horizontal">
|
6
40
|
|
7
|
-
<
|
41
|
+
<!-- こうしてもいいし -->
|
42
|
+
<userControls:Left DataContext="{Binding LeftRight}" />
|
8
43
|
|
44
|
+
<!-- こうするならRightで Width="{Binding LeftRight.RightWidth}" となる -->
|
9
|
-
|
45
|
+
<userControls:Right />
|
46
|
+
</StackPanel>
|
47
|
+
</Window>
|
48
|
+
```
|
10
49
|
|
50
|
+
```cs
|
11
|
-
|
51
|
+
using CommunityToolkit.Mvvm.ComponentModel;
|
52
|
+
using CommunityToolkit.Mvvm.Input;
|
53
|
+
using System.Windows;
|
54
|
+
using System.Windows.Input;
|
12
55
|
|
56
|
+
namespace Questions348249
|
57
|
+
{
|
58
|
+
class LeftRightViewModel : ObservableObject
|
59
|
+
{
|
13
|
-
|
60
|
+
public double LeftWidth { get => leftWidth; set => SetProperty(ref leftWidth, value); }
|
61
|
+
private double leftWidth;
|
62
|
+
public double RightWidth { get => rightWidth; set => SetProperty(ref rightWidth, value); }
|
63
|
+
private double rightWidth;
|
64
|
+
public ICommand Command { get; }
|
14
65
|
|
66
|
+
public LeftRightViewModel()
|
67
|
+
{
|
15
|
-
|
68
|
+
Command = new RelayCommand(() =>
|
69
|
+
{
|
70
|
+
LeftWidth += 10;
|
71
|
+
RightWidth += 5;
|
72
|
+
});
|
73
|
+
}
|
74
|
+
}
|
16
75
|
|
76
|
+
class MainViewModel
|
77
|
+
{
|
78
|
+
public LeftRightViewModel LeftRight { get; }
|
17
|
-
|
79
|
+
= new LeftRightViewModel { LeftWidth = 100, RightWidth = 100, };
|
80
|
+
}
|
18
81
|
|
19
|
-
|
82
|
+
public partial class MainWindow : Window
|
83
|
+
{
|
84
|
+
public MainWindow()
|
85
|
+
{
|
86
|
+
InitializeComponent();
|
20
87
|
|
88
|
+
// 「AllのDataContext(ViewModel)自体」 に設定した場合
|
21
|
-
|
89
|
+
//DataContext = new LeftRightViewModel();
|
22
90
|
|
23
|
-
</StackPanel>
|
24
|
-
|
25
|
-
</StackPanel>
|
26
|
-
|
27
|
-
|
91
|
+
// 「そのプロパティのひとつに設定」 した場合
|
28
|
-
|
92
|
+
DataContext = new MainViewModel();
|
93
|
+
}
|
94
|
+
}
|
95
|
+
}
|
29
96
|
```
|
30
97
|
|
31
98
|
|
32
|
-
|
33
|
-
```xaml
|
34
|
-
|
35
|
-
<UserControl
|
36
|
-
|
37
|
-
x:Class="Questions348249.Right"
|
38
|
-
|
39
|
-
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
|
40
|
-
|
41
|
-
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
|
42
|
-
|
43
|
-
<StackPanel Name="Width">
|
44
|
-
|
45
|
-
<Button Command="{Binding LeftRight.Command}" Content="Button" />
|
46
|
-
|
47
|
-
<StackPanel Width="{Binding LeftRight.RightWidth}">
|
48
|
-
|
49
|
-
<Rectangle Height="30" Fill="Blue" />
|
50
|
-
|
51
|
-
</StackPanel>
|
52
|
-
|
53
|
-
</StackPanel>
|
54
|
-
|
55
|
-
</UserControl>
|
56
|
-
|
57
|
-
```
|
58
|
-
|
59
|
-
|
60
|
-
|
61
|
-
```xaml
|
62
|
-
|
63
|
-
<Window
|
64
|
-
|
65
|
-
x:Class="Questions348249.MainWindow"
|
66
|
-
|
67
|
-
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
|
68
|
-
|
69
|
-
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
|
70
|
-
|
71
|
-
xmlns:userControls="clr-namespace:Questions348249"
|
72
|
-
|
73
|
-
Width="800"
|
74
|
-
|
75
|
-
Height="450">
|
76
|
-
|
77
|
-
<StackPanel HorizontalAlignment="Center" Orientation="Horizontal">
|
78
|
-
|
79
|
-
|
80
|
-
|
81
|
-
<!-- こうしてもいいし -->
|
82
|
-
|
83
|
-
<userControls:Left DataContext="{Binding LeftRight}" />
|
84
|
-
|
85
|
-
|
86
|
-
|
87
|
-
<!-- こうするならRightで Width="{Binding LeftRight.RightWidth}" となる -->
|
88
|
-
|
89
|
-
<userControls:Right />
|
90
|
-
|
91
|
-
</StackPanel>
|
92
|
-
|
93
|
-
</Window>
|
94
|
-
|
95
|
-
```
|
96
|
-
|
97
|
-
|
98
|
-
|
99
|
-
```C#
|
100
|
-
|
101
|
-
using CommunityToolkit.Mvvm.ComponentModel;
|
102
|
-
|
103
|
-
using CommunityToolkit.Mvvm.Input;
|
104
|
-
|
105
|
-
using System.Windows;
|
106
|
-
|
107
|
-
using System.Windows.Input;
|
108
|
-
|
109
|
-
|
110
|
-
|
111
|
-
namespace Questions348249
|
112
|
-
|
113
|
-
{
|
114
|
-
|
115
|
-
class LeftRightViewModel : ObservableObject
|
116
|
-
|
117
|
-
{
|
118
|
-
|
119
|
-
public double LeftWidth { get => leftWidth; set => SetProperty(ref leftWidth, value); }
|
120
|
-
|
121
|
-
private double leftWidth;
|
122
|
-
|
123
|
-
public double RightWidth { get => rightWidth; set => SetProperty(ref rightWidth, value); }
|
124
|
-
|
125
|
-
private double rightWidth;
|
126
|
-
|
127
|
-
public ICommand Command { get; }
|
128
|
-
|
129
|
-
|
130
|
-
|
131
|
-
public LeftRightViewModel()
|
132
|
-
|
133
|
-
{
|
134
|
-
|
135
|
-
Command = new RelayCommand(() =>
|
136
|
-
|
137
|
-
{
|
138
|
-
|
139
|
-
LeftWidth += 10;
|
140
|
-
|
141
|
-
RightWidth += 5;
|
142
|
-
|
143
|
-
});
|
144
|
-
|
145
|
-
}
|
146
|
-
|
147
|
-
}
|
148
|
-
|
149
|
-
|
150
|
-
|
151
|
-
class MainViewModel
|
152
|
-
|
153
|
-
{
|
154
|
-
|
155
|
-
public LeftRightViewModel LeftRight { get; }
|
156
|
-
|
157
|
-
= new LeftRightViewModel { LeftWidth = 100, RightWidth = 100, };
|
158
|
-
|
159
|
-
}
|
160
|
-
|
161
|
-
|
162
|
-
|
163
|
-
public partial class MainWindow : Window
|
164
|
-
|
165
|
-
{
|
166
|
-
|
167
|
-
public MainWindow()
|
168
|
-
|
169
|
-
{
|
170
|
-
|
171
|
-
InitializeComponent();
|
172
|
-
|
173
|
-
|
174
|
-
|
175
|
-
// 「AllのDataContext(ViewModel)自体」 に設定した場合
|
176
|
-
|
177
|
-
//DataContext = new LeftRightViewModel();
|
178
|
-
|
179
|
-
|
180
|
-
|
181
|
-
// 「そのプロパティのひとつに設定」 した場合
|
182
|
-
|
183
|
-
DataContext = new MainViewModel();
|
184
|
-
|
185
|
-
}
|
186
|
-
|
187
|
-
}
|
188
|
-
|
189
|
-
}
|
190
|
-
|
191
|
-
```
|
192
|
-
|
193
|
-
|
194
|
-
|
195
|
-
|
196
|
-
|
197
99
|
`INotifyPropertyChanged`・`ICommand`実装は↓を使用。
|
198
|
-
|
199
100
|
[NuGet Gallery | CommunityToolkit.Mvvm 7.0.3](https://www.nuget.org/packages/CommunityToolkit.Mvvm/)
|
200
101
|
|
201
|
-
|
202
|
-
|
203
102
|
[Introduction to the MVVM Toolkit - Windows Community Toolkit | Microsoft Docs](https://docs.microsoft.com/ja-jp/windows/communitytoolkit/mvvm/introduction)
|
1
余計なStackPanel
test
CHANGED
@@ -74,25 +74,19 @@
|
|
74
74
|
|
75
75
|
Height="450">
|
76
76
|
|
77
|
-
<StackPanel>
|
78
|
-
|
79
|
-
|
80
|
-
|
81
|
-
|
77
|
+
<StackPanel HorizontalAlignment="Center" Orientation="Horizontal">
|
82
|
-
|
83
|
-
|
84
|
-
|
78
|
+
|
79
|
+
|
80
|
+
|
85
|
-
|
81
|
+
<!-- こうしてもいいし -->
|
86
|
-
|
82
|
+
|
87
|
-
|
83
|
+
<userControls:Left DataContext="{Binding LeftRight}" />
|
88
|
-
|
89
|
-
|
90
|
-
|
84
|
+
|
85
|
+
|
86
|
+
|
91
|
-
|
87
|
+
<!-- こうするならRightで Width="{Binding LeftRight.RightWidth}" となる -->
|
92
|
-
|
88
|
+
|
93
|
-
|
89
|
+
<userControls:Right />
|
94
|
-
|
95
|
-
</StackPanel>
|
96
90
|
|
97
91
|
</StackPanel>
|
98
92
|
|