TabControl.TabCount 属性

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

获取选项卡条中选项卡的数目。

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

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

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

Public ReadOnly Property TabCount As Integer

属性值

Int32

选项卡条中选项卡的数目。

属性

BrowsableAttribute

示例

下面的代码示例创建包含五TabPage个 TabControl 对象的 。 此示例使用 TabCount 属性获取当前在选项卡条带中的 tabControl1 选项卡数。

using namespace System::Drawing;
using namespace System::Windows::Forms;
public ref class Form1: public Form
{
public:
   Form1()
   {
      TabControl^ tabControl1 = gcnew TabControl;
      TabPage^ tabPage1 = gcnew TabPage;
      TabPage^ tabPage2 = gcnew TabPage;
      TabPage^ tabPage3 = gcnew TabPage;
      TabPage^ tabPage4 = gcnew TabPage;
      TabPage^ tabPage5 = gcnew TabPage;
      Label^ label1 = gcnew Label;
      tabControl1->Multiline = true;
      tabControl1->SizeMode = TabSizeMode::FillToRight;
      tabControl1->Padding = Point(15,5);
      array<Control^>^tabControls = {tabPage1,tabPage2,tabPage3,tabPage4,tabPage5};
      tabControl1->Controls->AddRange( tabControls );
      tabControl1->Location = Point(35,65);
      tabControl1->Size = System::Drawing::Size( 220, 180 );
      
      // Gets the number of tabs currently in the tabControl1 tab strip.
      // Assigns int value to the tabsInTabStrip variable.
      int tabsInTabStrip = tabControl1->TabCount;
      label1->Text = System::String::Concat( "There are ", tabsInTabStrip, " tabs in the tabControl1 tab strip." );
      label1->Location = Point(35,25);
      label1->Size = System::Drawing::Size( 220, 30 );
      Size = System::Drawing::Size( 300, 300 );
      array<Control^>^formControls = {label1,tabControl1};
      Controls->AddRange( formControls );
   }

};

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

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

public class Form1 : Form
{
    public Form1()
    {
        TabControl tabControl1 = new TabControl();
        TabPage tabPage1 = new TabPage();
        TabPage tabPage2 = new TabPage();
        TabPage tabPage3 = new TabPage();
        TabPage tabPage4 = new TabPage();
        TabPage tabPage5 = new TabPage();
        Label label1= new Label();

        tabControl1.Multiline = true;
        tabControl1.SizeMode = TabSizeMode.FillToRight;
        tabControl1.Padding = new Point(15, 5);
        tabControl1.Controls.AddRange(new Control[] {
            tabPage1, tabPage2, tabPage3, tabPage4, tabPage5});
        tabControl1.Location = new Point(35, 65);
        tabControl1.Size = new Size(220, 180);    

        // Gets the number of tabs currently in the tabControl1 tab strip.
        // Assigns int value to the tabsInTabStrip variable.
        int tabsInTabStrip = tabControl1.TabCount;

        label1.Text = "There are " + tabsInTabStrip.ToString() + 
            " tabs in the tabControl1 tab strip.";
        label1.Location = new Point(35, 25);
        label1.Size = new Size(220, 30);

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

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

Imports System.Drawing
Imports System.Windows.Forms

Public Class Form1
    Inherits Form

    Public Sub New()
        Dim tabControl1 As New TabControl()
        Dim tabPage1 As New TabPage()
        Dim tabPage2 As New TabPage()
        Dim tabPage3 As New TabPage()
        Dim tabPage4 As New TabPage()
        Dim tabPage5 As New TabPage()
        Dim label1 As New Label()

        tabControl1.Multiline = True
        tabControl1.SizeMode = TabSizeMode.FillToRight
        tabControl1.Padding = New Point(15, 5)
        tabControl1.Controls.AddRange(New Control() {tabPage1, tabPage2, tabPage3, tabPage4, tabPage5})
        tabControl1.Location = New Point(35, 65)
        tabControl1.Size = New Size(220, 180)

        ' Gets the number of tabs currently in the tabControl1 tab strip.
        ' Assigns int value to the tabsInTabStrip variable.
        Dim tabsInTabStrip As Integer = tabControl1.TabCount

        label1.Text = "There are " + tabsInTabStrip.ToString() + " tabs in the tabControl1 tab strip."
        label1.Location = New Point(35, 25)
        label1.Size = New Size(220, 30)

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

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