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TabControl.TabPageCollection.IndexOf(TabPage) Método

Definición

Devuelve el índice de la página de ficha especificada en la colección.

public:
 int IndexOf(System::Windows::Forms::TabPage ^ page);
public int IndexOf (System.Windows.Forms.TabPage page);
member this.IndexOf : System.Windows.Forms.TabPage -> int
Public Function IndexOf (page As TabPage) As Integer

Parámetros

page
TabPage

TabPage que se va a buscar en la colección.

Devoluciones

Int32

El índice de base cero de la página de ficha; es -1 si no se encuentra.

Excepciones

El valor de page es null.

Ejemplos

En el ejemplo de código siguiente se crea un TabControl con uno TabPage. En este ejemplo se usa el IndexOf método para recuperar el valor de tabPage1 índice. Se usa una información sobre herramientas para mostrar este valor.

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

public:
   Form1()
   {
      this->tabControl1 = gcnew TabControl;
      this->tabPage1 = gcnew TabPage( "myTabPage" );
      this->tabControl1->TabPages->Add( tabPage1 );
      this->tabControl1->ShowToolTips = true;
      this->tabControl1->Location = Point(25,25);
      this->tabControl1->Size = System::Drawing::Size( 250, 250 );
      this->tabPage1->ToolTipText = System::String::Concat( "TabIndex = ", (tabControl1->TabPages->IndexOf( tabPage1 )).ToString() );
      
      // Gets the tabPage1 TabIndex value from the tabControl1 controls collection.
      // Converts the tabPage1 TabIndex value to a string.
      this->ClientSize = System::Drawing::Size( 300, 300 );
      this->Controls->Add( tabControl1 );
   }

};

int main()
{
   Application::Run( gcnew Form1 );
}
using System.Drawing;
using System.Windows.Forms;

public class Form1 : Form
{
    private TabControl tabControl1;
    private TabPage tabPage1;

    public Form1()
    {
        this.tabControl1 = new TabControl();
        this.tabPage1 = new TabPage("myTabPage");

        this.tabControl1.TabPages.Add(tabPage1);
        this.tabControl1.ShowToolTips = true;
        this.tabControl1.Location = new Point(25, 25);
        this.tabControl1.Size = new Size(250, 250);

        this.tabPage1.ToolTipText = "TabIndex = " +
            
            // Gets the tabPage1 TabIndex value from the tabControl1 controls collection.
            // Converts the tabPage1 TabIndex value to a string.
            (tabControl1.TabPages.IndexOf(tabPage1)).ToString();

        this.ClientSize = new Size(300, 300);
        this.Controls.Add(tabControl1);
    }

    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

    Public Sub New()
        Me.tabControl1 = New TabControl()
        Me.tabPage1 = New TabPage("myTabPage")

        Me.tabControl1.Controls.Add(tabPage1)
        Me.tabControl1.ShowToolTips = True
        Me.tabControl1.Location = New Point(25, 25)
        Me.tabControl1.Size = New Size(250, 250)

        ' Gets the tabPage1 TabIndex value from the tabControl1 controls collection.
        ' Converts the tabPage1 TabIndex value to a string.

        Me.tabPage1.ToolTipText = "TabIndex = " + tabControl1.TabPages.IndexOf(tabPage1).ToString()

        Me.ClientSize = New Size(300, 300)
        Me.Controls.Add(tabControl1)
    End Sub

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

Se aplica a

Consulte también