TabControl.TabPageCollection.Count 属性

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

获取集合中选项卡页的数目。

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

[System.ComponentModel.Browsable(false)]
public int Count { get; }

[<System.ComponentModel.Browsable(false)>]
member this.Count : int

Public ReadOnly Property Count As Integer

属性值

Int32

集合中选项卡页的数目。

实现

Count

属性

BrowsableAttribute

示例

下面的代码示例创建具有三TabPage个 TabControl 的 。 属性Count获取控件集合中的tabControl1对象数TabPage。

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 );
}

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());
    }
}

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