TabControl.TabPageCollection.Count プロパティ

.NET Framework クラス ライブラリ リファレンス

TabControl.TabPageCollection.Count プロパティ

コレクション内のタブ ページの数を取得します。

名前空間: System.Windows.Forms
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文

Visual Basic (宣言)

Public ReadOnly Property
 Count As Integer

Visual Basic (使用法)

Dim instance As TabPageCollection
Dim value As Integer

value = instance.Count

C#

public int Count { get;
 }

C++

public:
virtual property int Count {
    int get () sealed;
}

J#

/** @property */
public final int get_Count ()

JScript

public final function get
 Count () : int

プロパティ値
コレクション内のタブ ページの数。

使用例

3 つの TabPage を持つ TabControl を作成するコード例を次に示します。Count プロパティは、tabControl1 コントロール コレクション内の TabPage オブジェクトの数を取得します。

この例では、System.Drawing 名前空間と System.Windows.Forms 名前空間を使用します。

Visual Basic

Imports System.Drawing
Imports System.Windows.Forms

Public Class Form1
    Inherits Form
    Private tabControl1 As TabControl
    Private tabPage1 As TabPage
    Private tabPage2 As TabPage
    Private tabPage3 As TabPage
    Private label1 As Label

    Public Sub New()
        Me.tabControl1 = New TabControl()
        Me.tabPage1 = New TabPage()
        Me.tabPage2 = New TabPage()
        Me.tabPage3 = New TabPage()
        Me.label1 = New Label()

        Me.tabControl1.TabPages.AddRange(New
 TabPage() {tabPage1, tabPage2, tabPage3})
        Me.tabControl1.Location = New Point(25,
 75)
        Me.tabControl1.Size = New Size(250,
 200)

        ' Gets the number of TabPage objects in the tabControl1 controls
 collection.  
        Dim tabCount As Integer
 = tabControl1.TabPages.Count

        Me.label1.Location = New Point(25,
 25)
        Me.label1.Size = New Size(250, 25)
        Me.label1.Text = "The TabControl below
 has " + tabCount.ToString() + _
            " TabPage objects in its controls collection."

        Me.ClientSize = New Size(300, 300)
        Me.Controls.AddRange(New Control()
 {tabControl1, label1})
    End Sub

    Shared Sub Main()
        Application.Run(New Form1())
    End Sub
End Class

C#

using System.Drawing;
using System.Windows.Forms;

public class Form1 : Form
{
    private TabControl tabControl1;
    private TabPage tabPage1;
    private TabPage tabPage2;
    private TabPage tabPage3;
    private Label label1;

    public Form1()
    {
        this.tabControl1 = new TabControl();
        this.tabPage1 = new TabPage();
        this.tabPage2 = new TabPage();
        this.tabPage3 = new TabPage();
        this.label1 = new Label();

        this.tabControl1.TabPages.AddRange(new
 TabPage[] {
            tabPage1, tabPage2, tabPage3});

        this.tabControl1.Location = new Point(25,
 75);
        this.tabControl1.Size = new Size(250,
 200);

        // Gets the number of TabPage objects in the tabControl1 controls
 collection.  
        int tabCount = tabControl1.TabPages.Count;

        this.label1.Location = new Point(25,
 25);
        this.label1.Size = new Size(250, 25);
        this.label1.Text = "The TabControl below has "
 + tabCount.ToString() +
            " TabPage objects in its controls collection.";

        this.ClientSize = new Size(300, 300);
        this.Controls.AddRange(new Control[]
 {tabControl1, label1});
    }

    static void Main() 
    {
        Application.Run(new Form1());
    }
}

C++

using namespace System::Drawing;
using namespace System::Windows::Forms;
public ref class Form1: public
 Form
{
private:
   TabControl^ tabControl1;
   TabPage^ tabPage1;
   TabPage^ tabPage2;
   TabPage^ tabPage3;
   Label^ label1;

public:
   Form1()
   {
      this->tabControl1 = gcnew TabControl;
      this->tabPage1 = gcnew TabPage;
      this->tabPage2 = gcnew TabPage;
      this->tabPage3 = gcnew TabPage;
      this->label1 = gcnew Label;
      array<TabPage^>^tabPages = {tabPage1,tabPage2,tabPage3};
      this->tabControl1->TabPages->AddRange( tabPages
 );
      this->tabControl1->Location = Point(25,75);
      this->tabControl1->Size = System::Drawing::Size( 250,
 200 );
      
      // Gets the number of TabPage objects in the tabControl1 controls
 collection.  
      int tabCount = tabControl1->TabPages->Count;
      this->label1->Location = Point(25,25);
      this->label1->Size = System::Drawing::Size( 250, 25
 );
      this->label1->Text = System::String::Concat( "The
 TabControl below has ", tabCount, " TabPage objects in
 its controls collection." );
      this->ClientSize = System::Drawing::Size( 300, 300 );
      array<Control^>^formControls = {tabControl1,label1};
      this->Controls->AddRange( formControls );
   }

};

int main()
{
   Application::Run( gcnew Form1 );
}

プラットフォーム

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0
.NET Compact Framework
サポート対象 : 2.0、1.0

参照

関連項目
TabControl.TabPageCollection クラス
TabControl.TabPageCollection メンバ
System.Windows.Forms 名前空間