1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
using System.ComponentModel;
namespace TestDataGridView
{
internal static class Program
{
[STAThread]
static void Main()
{
ApplicationConfiguration.Initialize();
Application.Run(new MyForm());
}
}
public class MyForm : Form
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
components = new System.ComponentModel.Container();
nameTextBox = new TextBox();
firstNameTextBox = new TextBox();
nameLabel = new Label();
firstNameLabel = new Label();
personListDataGridView = new DataGridView();
nameDataGridViewTextBoxColumn = new DataGridViewTextBoxColumn();
firstNameDataGridViewTextBoxColumn = new DataGridViewTextBoxColumn();
personBindingSource = new BindingSource(components);
newPersonButton = new Button();
((System.ComponentModel.ISupportInitialize)personListDataGridView).BeginInit();
((System.ComponentModel.ISupportInitialize)personBindingSource).BeginInit();
SuspendLayout();
//
// nameTextBox
//
nameTextBox.Location = new Point(78, 24);
nameTextBox.Name = "nameTextBox";
nameTextBox.Size = new Size(174, 23);
nameTextBox.TabIndex = 0;
//
// firstNameTextBox
//
firstNameTextBox.Location = new Point(78, 53);
firstNameTextBox.Name = "firstNameTextBox";
firstNameTextBox.Size = new Size(174, 23);
firstNameTextBox.TabIndex = 1;
//
// nameLabel
//
nameLabel.AutoSize = true;
nameLabel.Location = new Point(12, 27);
nameLabel.Name = "nameLabel";
nameLabel.Size = new Size(37, 15);
nameLabel.TabIndex = 2;
nameLabel.Text = "name";
//
// firstNameLabel
//
firstNameLabel.AutoSize = true;
firstNameLabel.Location = new Point(12, 56);
firstNameLabel.Name = "firstNameLabel";
firstNameLabel.Size = new Size(60, 15);
firstNameLabel.TabIndex = 3;
firstNameLabel.Text = "first name";
//
// personListDataGridView
//
personListDataGridView.AllowUserToResizeColumns = false;
personListDataGridView.AllowUserToResizeRows = false;
personListDataGridView.AutoGenerateColumns = false;
personListDataGridView.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;
personListDataGridView.Columns.AddRange(new DataGridViewColumn[] { nameDataGridViewTextBoxColumn, firstNameDataGridViewTextBoxColumn });
personListDataGridView.DataSource = personBindingSource;
personListDataGridView.Location = new Point(12, 82);
personListDataGridView.Name = "personListDataGridView";
personListDataGridView.RowTemplate.Height = 25;
personListDataGridView.Size = new Size(409, 284);
personListDataGridView.TabIndex = 4;
//
// nameDataGridViewTextBoxColumn
//
nameDataGridViewTextBoxColumn.AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
nameDataGridViewTextBoxColumn.DataPropertyName = "Name";
nameDataGridViewTextBoxColumn.HeaderText = "Name";
nameDataGridViewTextBoxColumn.Name = "nameDataGridViewTextBoxColumn";
//
// firstNameDataGridViewTextBoxColumn
//
firstNameDataGridViewTextBoxColumn.AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
firstNameDataGridViewTextBoxColumn.DataPropertyName = "FirstName";
firstNameDataGridViewTextBoxColumn.HeaderText = "FirstName";
firstNameDataGridViewTextBoxColumn.Name = "firstNameDataGridViewTextBoxColumn";
//
// personBindingSource
//
personBindingSource.DataSource = typeof(Person);
//
// newPersonButton
//
newPersonButton.Location = new Point(12, 372);
newPersonButton.Name = "newPersonButton";
newPersonButton.Size = new Size(121, 23);
newPersonButton.TabIndex = 5;
newPersonButton.Text = "new person";
newPersonButton.UseVisualStyleBackColor = true;
newPersonButton.Click += newPersonButton_Click;
//
// Form1
//
AutoScaleDimensions = new SizeF(7F, 15F);
AutoScaleMode = AutoScaleMode.Font;
AutoSize = true;
ClientSize = new Size(433, 407);
Controls.Add(newPersonButton);
Controls.Add(personListDataGridView);
Controls.Add(firstNameLabel);
Controls.Add(nameLabel);
Controls.Add(firstNameTextBox);
Controls.Add(nameTextBox);
Name = "Form1";
Text = "Form1";
((System.ComponentModel.ISupportInitialize)personListDataGridView).EndInit();
((System.ComponentModel.ISupportInitialize)personBindingSource).EndInit();
ResumeLayout(false);
PerformLayout();
}
#endregion
private TextBox nameTextBox;
private TextBox firstNameTextBox;
private Label nameLabel;
private Label firstNameLabel;
private DataGridView personListDataGridView;
private Button newPersonButton;
private BindingSource personBindingSource;
private DataGridViewTextBoxColumn nameDataGridViewTextBoxColumn;
private DataGridViewTextBoxColumn firstNameDataGridViewTextBoxColumn;
private static int _counter = 0;
private IList<Person> _persons;
public MyForm()
{
InitializeComponent();
// Remplacer ici la création de la liste par une List<Person>, et on perd le two-way binding
//_persons = new List<Person>(this.GetPersons());
_persons = new BindingList<Person>(this.GetPersons());
this.personBindingSource.DataSource = _persons;
this.firstNameTextBox.DataBindings.Add(new Binding("Text", this.personBindingSource, "FirstName", true));
this.nameTextBox.DataBindings.Add(new Binding("Text", this.personBindingSource, "Name", true));
}
private List<Person> GetPersons()
{
return new List<Person>
{
new Person() { Name = "John", FirstName = "Doe" },
new Person() { Name = "Jane", FirstName = "Doe" },
new Person() { Name = "John", FirstName = "Smith" },
new Person() { Name = "Jane", FirstName = "Smith" },
};
}
public Person NewPerson()
{
_counter++;
return new Person() { FirstName = $"TATA {_counter}", Name = "TOTO" };
}
private void newPersonButton_Click(object sender, EventArgs e)
{
// Ici, on ajoute un nouvel élément à la liste source du BindingSource
// et pas au BindingSource lui-même. Le BindingSource se charge de mettre
// à jour la liste des éléments affichés dans le DataGridView.
// C'est possible car la liste source est implémente l'interface IBindingList<T>
Person person = NewPerson();
_persons.Add(person);
}
}
} |
Nouvel enregistrement pas retrouvé d'un formulaire à l'autre
Répondre avec citation
Partager