回答編集履歴
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見直しキャンペーン中
answer
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@@ -1,71 +1,71 @@
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YAmaGNZさんの言っていることをコードにしただけですが^^;
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```
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using System;
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using System.Linq;
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using System.Windows.Forms;
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namespace Questions269084
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{
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public partial class Form1 : Form
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{
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private readonly ListBox listBox;
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private readonly TextBox textBox;
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public Form1()
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{
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InitializeComponent();
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textBox = new TextBox
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{
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Dock = DockStyle.Fill,
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Multiline = true,
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};
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Controls.Add(textBox);
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listBox = new ListBox
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{
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Dock = DockStyle.Left,
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SelectionMode = SelectionMode.MultiSimple,
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Width = 50,
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};
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listBox.Items.AddRange(new string[] { "A", "B", "C", "D", "E", "A", "A", });
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listBox.SelectedIndexChanged += ListBox_SelectedIndexChanged;
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Controls.Add(listBox);
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}
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private void ListBox_SelectedIndexChanged(object sender, EventArgs e)
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{
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var text = "選択された\r\n";
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foreach(var item in listBox.SelectedItems)
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{
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text += item + "\r\n";
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}
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text += "選択されていない\r\n";
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for(var i = 0; i < listBox.Items.Count; i++)
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{
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if(!listBox.GetSelected(i))
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{
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text += listBox.Items[i] + "\r\n";
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}
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}
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textBox.Text = text;
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}
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// 大体同じ
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//private void ListBox_SelectedIndexChanged(object sender, EventArgs e)
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//{
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// var text = "選択された\r\n";
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// text += string.Join("\r\n", listBox.SelectedItems.Cast<object>());
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// text += "\r\n選択されていない\r\n";
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// var unSelected = listBox.Items.Cast<object>().Where((x, i) => !listBox.GetSelected(i));
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// text += string.Join("\r\n", unSelected);
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// textBox.Text = text;
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//}
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}
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}
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1
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YAmaGNZさんの言っていることをコードにしただけですが^^;
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2
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3
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```cs
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4
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using System;
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5
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+
using System.Linq;
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6
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+
using System.Windows.Forms;
|
|
7
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+
|
|
8
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+
namespace Questions269084
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9
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+
{
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10
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public partial class Form1 : Form
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11
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+
{
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12
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private readonly ListBox listBox;
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13
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+
private readonly TextBox textBox;
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14
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+
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15
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public Form1()
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16
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{
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InitializeComponent();
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+
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textBox = new TextBox
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20
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{
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21
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Dock = DockStyle.Fill,
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22
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Multiline = true,
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23
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};
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Controls.Add(textBox);
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listBox = new ListBox
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{
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Dock = DockStyle.Left,
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SelectionMode = SelectionMode.MultiSimple,
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Width = 50,
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};
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listBox.Items.AddRange(new string[] { "A", "B", "C", "D", "E", "A", "A", });
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listBox.SelectedIndexChanged += ListBox_SelectedIndexChanged;
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Controls.Add(listBox);
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35
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}
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36
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+
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private void ListBox_SelectedIndexChanged(object sender, EventArgs e)
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38
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{
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39
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var text = "選択された\r\n";
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40
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foreach(var item in listBox.SelectedItems)
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{
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text += item + "\r\n";
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}
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44
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+
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text += "選択されていない\r\n";
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46
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for(var i = 0; i < listBox.Items.Count; i++)
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47
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{
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48
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if(!listBox.GetSelected(i))
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49
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{
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text += listBox.Items[i] + "\r\n";
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}
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}
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textBox.Text = text;
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55
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}
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56
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+
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57
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+
// 大体同じ
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58
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//private void ListBox_SelectedIndexChanged(object sender, EventArgs e)
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59
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//{
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60
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// var text = "選択された\r\n";
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// text += string.Join("\r\n", listBox.SelectedItems.Cast<object>());
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// text += "\r\n選択されていない\r\n";
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// var unSelected = listBox.Items.Cast<object>().Where((x, i) => !listBox.GetSelected(i));
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65
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// text += string.Join("\r\n", unSelected);
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66
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// textBox.Text = text;
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//}
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}
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}
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71
71
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```
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