TabPage.ImageIndex Propriété

public:
 property int ImageIndex { int get(); void set(int value); };

[System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.ImageIndexConverter))]
public int ImageIndex { get; set; }

[<System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.ImageIndexConverter))>]
member this.ImageIndex : int with get, set

Public Property ImageIndex As Integer

Valeur de propriété

Int32

Index de base zéro de l’image dans l’onglet ImageList . La valeur par défaut est -1, ce qui signifie aucune image.

Attributs

TypeConverterAttribute

Exceptions

Exemples

L’exemple de code suivant crée un TabControl avec un TabPage. Cet exemple utilise la propriété pour spécifier l’image ImageIndex à partir de laquelle s’affiche myImages l’onglet tabPage1.

using namespace System::Drawing;
using namespace System::ComponentModel;
using namespace System::Windows::Forms;
using namespace System::Resources;
public ref class Form1: public Form
{
public:
   Form1()
   {
      IContainer^ components = gcnew System::ComponentModel::Container;
      ResourceManager^ resources = gcnew ResourceManager( Form1::typeid );
      TabControl^ tabControl1 = gcnew TabControl;
      TabPage^ tabPage1 = gcnew TabPage;
      ImageList^ myImages = gcnew ImageList( components );
      tabControl1->Controls->Add( tabPage1 );
      
      // Displays images from myImages on the tabs of tabControl1.
      tabControl1->ImageList = myImages;
      
      // Specifies which image to display (on the tab of tabPage1) by its index.
      tabPage1->ImageIndex = 0;
      tabPage1->Text = "tabPage1";
      myImages->ImageStream = (dynamic_cast<ImageListStreamer^>(resources->GetObject( "myImages.ImageStream" )));
      myImages->ColorDepth = ColorDepth::Depth8Bit;
      myImages->ImageSize = System::Drawing::Size( 16, 16 );
      myImages->TransparentColor = Color::Transparent;
      this->Controls->Add( tabControl1 );
   }

};

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

using System.Drawing;
using System.ComponentModel;
using System.Windows.Forms;
using System.Resources;

public class Form1 : Form
{
    public Form1()
    {
        IContainer components = new Container();
        ResourceManager resources = new ResourceManager(typeof(Form1));
        TabControl tabControl1 = new TabControl();
        TabPage tabPage1 = new TabPage();
        ImageList myImages = new ImageList(components);

        tabControl1.Controls.Add(tabPage1);

        // Displays images from myImages on the tabs of tabControl1.
        tabControl1.ImageList = myImages;

        // Specifies which image to display (on the tab of tabPage1) by its index.
        tabPage1.ImageIndex = 0;

        tabPage1.Text = "tabPage1";

        myImages.ImageStream = ((ImageListStreamer)(resources.GetObject("myImages.ImageStream")));
        myImages.ColorDepth = ColorDepth.Depth8Bit;
        myImages.ImageSize = new Size(16, 16);
        myImages.TransparentColor = Color.Transparent;

        this.Controls.Add(tabControl1);
    }

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

Imports System.Drawing
Imports System.ComponentModel
Imports System.Windows.Forms
Imports System.Resources

Public Class Form1
    Inherits Form

    Public Sub New()
        Dim components = New Container()
        Dim resources As New ResourceManager(GetType(Form1))
        Dim tabControl1 As New TabControl()
        Dim tabPage1 As New TabPage()
        Dim myImages As New ImageList(components)

        tabControl1.Controls.Add(tabPage1)

        ' Displays images from myImages on the tabs of tabControl1.
        tabControl1.ImageList = myImages

        ' Specifies which image to display (on the tab of tabPage1) by its index.
        tabPage1.ImageIndex = 0

        tabPage1.Text = "tabPage1"

        myImages.ImageStream = CType(resources.GetObject("myImages.ImageStream"), ImageListStreamer)
        myImages.ColorDepth = ColorDepth.Depth8Bit
        myImages.ImageSize = New Size(16, 16)
        myImages.TransparentColor = Color.Transparent

        Me.Controls.Add(tabControl1)
    End Sub

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

Remarques

Les ImageIndex points vers une image dans l’associé ImageList du TabControl.

ImageKey et ImageIndex sont mutuellement exclusifs, ce qui signifie que si l’un est défini, l’autre est défini sur une valeur non valide et ignoré. Si vous définissez la ImageKey propriété, la ImageIndex propriété est automatiquement définie sur -1. Sinon, si vous définissez la ImageIndex propriété, celle-ci ImageKey est automatiquement définie sur une chaîne vide («  »).

S’applique à

Voir aussi

• ImageList