TabControl.TabPageCollection.IndexOf(TabPage) Methode

  • Referenz

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll

Gibt den Index der angegebenen Registerkarte in der Auflistung zurück.

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

Parameter

page
TabPage

Die TabPage, die in der Auflistung gesucht werden soll.

Gibt zurück

Int32

Der nullbasierte Index der Registerkarte. -1, wenn sie nicht gefunden werden kann.

Ausnahmen

ArgumentNullException

Der Wert von page ist null.

Beispiele

Im folgenden Codebeispiel wird eine mit einer TabControl TabPageerstellt. In diesem Beispiel wird die IndexOf Methode zum Abrufen des tabPage1 Indexwerts verwendet. Eine QuickInfo wird verwendet, um diesen Wert anzuzeigen.

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

Gilt für

Siehe auch