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トップC#に関する質問WPFのコンボボックスなどのアイテムを非表示にする方法

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回答編集履歴

4

111

2017/05/12 00:48

投稿

dn315
dn315

スコア201

test CHANGED
@@ -1,6 +1,6 @@
1
1
  こんな感じでしょうか
2
2
 
3
- CollectionViewSource.Filterを使います
3
+ CollectionViewSource.View.Filterを使います
4
4
 
5
5
 
6
6
 

3

コメント

2017/05/12 00:48

投稿

dn315
dn315

スコア201

test CHANGED
@@ -1,4 +1,6 @@
1
1
  こんな感じでしょうか
2
+
3
+ CollectionViewSource.Filterを使います
2
4
 
3
5
 
4
6
 

2

アイテム

2017/05/12 00:40

投稿

dn315
dn315

スコア201

test CHANGED
@@ -1,3 +1,121 @@
1
- これでしょうか
1
+ こんな感じでしょうか
2
2
 
3
+
4
+
5
+ ```XAML
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+
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+ <Window x:Class="WpfApplication1.MainWindow"
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+
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+ xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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+
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+ xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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+
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+ xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
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+
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+ xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
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+
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+ xmlns:local="clr-namespace:WpfApplication30"
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+
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+ mc:Ignorable="d"
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+
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+ Title="MainWindow" Height="350" Width="525">
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+
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+ <Grid>
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+
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+ <ComboBox x:Name="comboBox" HorizontalAlignment="Left" VerticalAlignment="Top" Width="120" DisplayMemberPath="Name" SelectedValuePath="Id"/>
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+
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+ </Grid>
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+
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+ </Window>
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+
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+ ```
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+
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+
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+
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+ ```C#
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+
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+ using System.Collections.ObjectModel;
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+
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+ using System.Windows;
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+
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+ using System.Windows.Data;
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+
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+
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+
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+ namespace WpfApplication1
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+
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+ {
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+
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+ /// <summary>
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+
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+ /// MainWindow.xaml の相互作用ロジック
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+
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+ /// </summary>
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+
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+ public partial class MainWindow : Window
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+
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+ {
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+
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+ private class Hoge
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+
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+ {
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+
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+ public int ID { get; set; }
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+
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+ public string Name { get; set; }
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+
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+ }
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+
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+
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+
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+ private ObservableCollection<Hoge> HogeItems { get; set; }
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+
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+ private CollectionViewSource HogeViewSource { get; set; }
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+
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+
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+
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+ public MainWindow()
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+
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+ {
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+
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+ InitializeComponent();
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+
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+
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+
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+ this.HogeItems = new ObservableCollection<Hoge>();
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+
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+ this.HogeViewSource = new CollectionViewSource() { Source = this.HogeItems };
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+
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- comboBox.Visibility = Visibility.Collapsed;
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+ this.comboBox.ItemsSource = this.HogeViewSource.View;
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+
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+
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+
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+ this.HogeItems.Add(new Hoge { ID = 1, Name = "A" });
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+
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+ this.HogeItems.Add(new Hoge { ID = 2, Name = "B" });
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+
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+ this.HogeItems.Add(new Hoge { ID = 3, Name = "C" });
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+
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+ this.HogeItems.Add(new Hoge { ID = 4, Name = "D" });
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+
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+ this.HogeItems.Add(new Hoge { ID = 5, Name = "E" });
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+
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+
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+
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+ this.HogeViewSource.View.Filter = (n) =>
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+
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+ {
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+
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+ var item = n as Hoge;
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+
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+ return item.ID > 2;
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+
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+ };
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+
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+ }
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+
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+ }
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+
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+ }
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+
121
+ ```

1

非表示

2017/05/12 00:39

投稿

dn315
dn315

スコア201

test CHANGED
@@ -1,129 +1,3 @@
1
- こんにちは
1
+ これでしょうか
2
2
 
3
- CollectionViewSourceを使います
4
-
5
-
6
-
7
-
8
-
9
-
10
-
11
- ```XAML
12
-
13
- <Window x:Class="WpfApplication1.MainWindow"
14
-
15
- xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
16
-
17
- xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
18
-
19
- xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
20
-
21
- xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
22
-
23
- xmlns:local="clr-namespace:WpfApplication30"
24
-
25
- mc:Ignorable="d"
26
-
27
- Title="MainWindow" Height="350" Width="525">
28
-
29
- <Grid>
30
-
31
- <ComboBox x:Name="comboBox" HorizontalAlignment="Left" VerticalAlignment="Top" Width="120" DisplayMemberPath="Name" SelectedValuePath="Id"/>
32
-
33
- </Grid>
34
-
35
- </Window>
36
-
37
- ```
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-
39
-
40
-
41
- ```C#
42
-
43
- using System.Collections.ObjectModel;
44
-
45
- using System.Windows;
46
-
47
- using System.Windows.Data;
48
-
49
-
50
-
51
- namespace WpfApplication1
52
-
53
- {
54
-
55
- /// <summary>
56
-
57
- /// MainWindow.xaml の相互作用ロジック
58
-
59
- /// </summary>
60
-
61
- public partial class MainWindow : Window
62
-
63
- {
64
-
65
- private class Hoge
66
-
67
- {
68
-
69
- public int ID { get; set; }
70
-
71
- public string Name { get; set; }
72
-
73
- }
74
-
75
-
76
-
77
- private ObservableCollection<Hoge> HogeItems { get; set; }
78
-
79
- private CollectionViewSource HogeViewSource { get; set; }
80
-
81
-
82
-
83
- public MainWindow()
84
-
85
- {
86
-
87
- InitializeComponent();
88
-
89
-
90
-
91
- this.HogeItems = new ObservableCollection<Hoge>();
92
-
93
- this.HogeViewSource = new CollectionViewSource() { Source = this.HogeItems };
94
-
95
- this.comboBox.ItemsSource = this.HogeViewSource.View;
3
+ comboBox.Visibility = Visibility.Collapsed;
96
-
97
-
98
-
99
- this.HogeItems.Add(new Hoge { ID = 1, Name = "A" });
100
-
101
- this.HogeItems.Add(new Hoge { ID = 2, Name = "B" });
102
-
103
- this.HogeItems.Add(new Hoge { ID = 3, Name = "C" });
104
-
105
- this.HogeItems.Add(new Hoge { ID = 4, Name = "D" });
106
-
107
- this.HogeItems.Add(new Hoge { ID = 5, Name = "E" });
108
-
109
-
110
-
111
- this.HogeViewSource.View.Filter = (n) =>
112
-
113
- {
114
-
115
- var item = n as Hoge;
116
-
117
- return item.ID > 2;
118
-
119
- };
120
-
121
- }
122
-
123
- }
124
-
125
- }
126
-
127
-
128
-
129
- ```