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ComboBox, classe (System.Windows.Forms)

Bibliothèque de classes .NET Framework 
ComboBox, classe 

Représente un contrôle de zone de liste déroulante Windows.

Espace de noms : System.Windows.Forms
Assembly : System.Windows.Forms (dans system.windows.forms.dll)

SyntaxeSyntaxe


Visual Basic (Déclaration)
<ClassInterfaceAttribute(ClassInterfaceType.AutoDispatch)> _
<ComVisibleAttribute(True)> _
Public Class ComboBox
    Inherits ListControl


Visual Basic (Utilisation)
Dim instance As ComboBox


C#
[ClassInterfaceAttribute(ClassInterfaceType.AutoDispatch)] 
[ComVisibleAttribute(true)] 
public class ComboBox : ListControl


C++
[ClassInterfaceAttribute(ClassInterfaceType::AutoDispatch)] 
[ComVisibleAttribute(true)] 
public ref class ComboBox : public ListControl


J#
/** @attribute ClassInterfaceAttribute(ClassInterfaceType.AutoDispatch) */ 
/** @attribute ComVisibleAttribute(true) */ 
public class ComboBox extends ListControl


JScript
ClassInterfaceAttribute(ClassInterfaceType.AutoDispatch) 
ComVisibleAttribute(true) 
public class ComboBox extends ListControl
NotesNotes

Un ComboBox affiche un champ d'édition de texte associé à un ListBox, permettant à l'utilisateur de sélectionner des éléments dans la liste ou d'entrer du texte. Par défaut, ComboBox affiche un champ d'édition avec une liste déroulante masquée. La propriété DropDownStyle détermine le style de la zone de liste déroulante à afficher. Vous pouvez entrer une valeur qui fournit une liste déroulante simple dans laquelle la liste est toujours affichée, une zone de liste déroulante dans laquelle la partie de texte n'est pas modifiable et vous devez appuyer sur une flèche pour afficher la zone de liste déroulante, ou la zone de liste déroulante par défaut dans laquelle la partie de texte est modifiable et l'utilisateur doit appuyer sur la touche de direction pour afficher la liste. Pour afficher une liste que l'utilisateur ne peut pas modifier, utilisez un contrôle ListBox.

Pour ajouter des objets à la liste au moment de l'exécution, assignez un tableau de références d'objets avec la méthode AddRange. La liste affiche ensuite la valeur de chaîne par défaut pour chaque objet. Vous pouvez ajouter des objets individuels avec la méthode Add.

Outre les fonctionnalités d'affichage et de sélection, ComboBox fournit des fonctionnalités qui permettent d'ajouter efficacement des éléments à ComboBox et de rechercher du texte dans les éléments de la liste. Les méthodes BeginUpdate et EndUpdate vous permettent d'ajouter un grand nombre d'éléments au ComboBox sans repeindre le contrôle chaque fois qu'un élément est ajouté à la liste. Les méthodes FindString et FindStringExact vous permettent de rechercher dans la liste un élément qui contient une chaîne spécifique.

Vous pouvez utiliser ces propriétés pour gérer l'élément actuellement sélectionné dans la liste, la propriété Text pour spécifier la chaîne affichée dans le champ d'édition, la propriété SelectedIndex pour obtenir ou définir l'élément en cours, et la propriété SelectedItem pour obtenir ou définir une référence à l'objet.

RemarqueRemarque

Si vous avez un ListBox, ComboBox ou CheckedListBox sur une page Windows Forms de base et souhaitez modifier les collections de chaînes de ces contrôles dans un formulaire dérivé, les collections de chaînes de ces contrôles dans le formulaire de base doivent être vides. Si les collections de chaînes ne sont pas vides, elles sont mises en lecture seule lorsque vous dérivez un autre formulaire.

ExempleExemple

L'exemple de code suivant est une application complète illustrant comment utiliser la méthode Add pour ajouter des éléments à un ComboBox, la méthode FindString pour rechercher des éléments dans un ComboBox, et les méthodes BeginUpdate et EndUpdate pour ajouter un grand nombre d'éléments à un ComboBox de manière efficace.



Visual Basic
Imports System
Imports System.Windows.Forms

Namespace ComboBoxSampleNamespace

    Public Class ComboBoxSample
        Inherits System.Windows.Forms.Form

        Private addButton As System.Windows.Forms.Button
        Private textBox2 As System.Windows.Forms.TextBox
        Private addGrandButton As System.Windows.Forms.Button
        Private comboBox1 As System.Windows.Forms.ComboBox
        Private showSelectedButton As System.Windows.Forms.Button
        Private textBox1 As System.Windows.Forms.TextBox
        Private findButton As System.Windows.Forms.Button
        Private label1 As System.Windows.Forms.Label

        Public Sub New()
            MyBase.New()
            Me.InitializeComponent()
        End Sub

        <System.STAThreadAttribute()> Public Shared Sub Main()
            System.Windows.Forms.Application.Run(New ComboBoxSample())
        End Sub

        Private Sub InitializeComponent()
            Me.addButton = New System.Windows.Forms.Button()
            Me.textBox2 = New System.Windows.Forms.TextBox()
            Me.addGrandButton = New System.Windows.Forms.Button()
            Me.comboBox1 = New System.Windows.Forms.ComboBox()
            Me.showSelectedButton = New System.Windows.Forms.Button()
            Me.textBox1 = New System.Windows.Forms.TextBox()
            Me.findButton = New System.Windows.Forms.Button()
            Me.label1 = New System.Windows.Forms.Label()
            Me.addButton.Location = New System.Drawing.Point(248, 32)
            Me.addButton.Size = New System.Drawing.Size(40, 24)
            Me.addButton.TabIndex = 1
            Me.addButton.Text = "Add"
            AddHandler Me.addButton.Click, AddressOf Me.addButton_Click
            Me.textBox2.Location = New System.Drawing.Point(8, 64)
            Me.textBox2.Size = New System.Drawing.Size(232, 20)
            Me.textBox2.TabIndex = 6
            Me.textBox2.Text = ""
            Me.addGrandButton.Location = New System.Drawing.Point(8, 96)
            Me.addGrandButton.Size = New System.Drawing.Size(280, 23)
            Me.addGrandButton.TabIndex = 2
            Me.addGrandButton.Text = "Add 1,000 Items"
            AddHandler Me.addGrandButton.Click, AddressOf Me.addGrandButton_Click
            Me.comboBox1.Anchor = ((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left) _
                        Or System.Windows.Forms.AnchorStyles.Right)
            Me.comboBox1.DropDownWidth = 280
            Me.comboBox1.Items.AddRange(New Object() {"Item 1", "Item 2", "Item 3", "Item 4", "Item 5"})
            Me.comboBox1.Location = New System.Drawing.Point(8, 248)
            Me.comboBox1.Size = New System.Drawing.Size(280, 21)
            Me.comboBox1.TabIndex = 7
            Me.showSelectedButton.Location = New System.Drawing.Point(8, 128)
            Me.showSelectedButton.Size = New System.Drawing.Size(280, 24)
            Me.showSelectedButton.TabIndex = 4
            Me.showSelectedButton.Text = "What Item is Selected?"
            AddHandler Me.showSelectedButton.Click, AddressOf Me.showSelectedButton_Click
            Me.textBox1.Location = New System.Drawing.Point(8, 32)
            Me.textBox1.Size = New System.Drawing.Size(232, 20)
            Me.textBox1.TabIndex = 5
            Me.textBox1.Text = ""
            Me.findButton.Location = New System.Drawing.Point(248, 64)
            Me.findButton.Size = New System.Drawing.Size(40, 24)
            Me.findButton.TabIndex = 3
            Me.findButton.Text = "Find"
            AddHandler Me.findButton.Click, AddressOf Me.findButton_Click
            Me.label1.Location = New System.Drawing.Point(8, 224)
            Me.label1.Size = New System.Drawing.Size(144, 23)
            Me.label1.TabIndex = 0
            Me.label1.Text = "Test ComboBox"
            Me.ClientSize = New System.Drawing.Size(292, 273)
            Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.comboBox1, Me.textBox2, Me.textBox1, Me.showSelectedButton, Me.findButton, Me.addGrandButton, Me.addButton, Me.label1})
            Me.Text = "ComboBox Sample"
        End Sub

        Private Sub addButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
            comboBox1.Items.Add(textBox1.Text)
        End Sub

        Private Sub findButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
            Dim index As Integer
            index = comboBox1.FindString(textBox2.Text)
            comboBox1.SelectedIndex = index
        End Sub

        Private Sub addGrandButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
            comboBox1.BeginUpdate()
            Dim I As Integer
            For I = 0 To 1000
                comboBox1.Items.Add("Item 1" + i.ToString())
            Next
            comboBox1.EndUpdate()
        End Sub

        Private Sub showSelectedButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
            Dim selectedIndex As Integer
            selectedIndex = comboBox1.SelectedIndex
            Dim selectedItem As Object
            selectedItem = comboBox1.SelectedItem

            MessageBox.Show("Selected Item Text: " & selectedItem.ToString() & Microsoft.VisualBasic.Constants.vbCrLf & _
                                "Index: " & selectedIndex.ToString())
        End Sub
    End Class
End Namespace


C#
using System;
using System.Windows.Forms;

namespace Win32Form1Namespace {
    
    
    public class Win32Form1 : System.Windows.Forms.Form {
        private System.Windows.Forms.Button addButton;
        private System.Windows.Forms.TextBox textBox2;
        private System.Windows.Forms.Button addGrandButton;
        private System.Windows.Forms.ComboBox comboBox1;
        private System.Windows.Forms.Button showSelectedButton;
        private System.Windows.Forms.TextBox textBox1;
        private System.Windows.Forms.Button findButton;
        private System.Windows.Forms.Label label1;
        
        public Win32Form1() {
            this.InitializeComponent();
        }
        
        [System.STAThreadAttribute()]
        public static void Main() {
            System.Windows.Forms.Application.Run(new Win32Form1());
        }
        
        private void InitializeComponent() {
            this.addButton = new System.Windows.Forms.Button();
            this.textBox2 = new System.Windows.Forms.TextBox();
            this.addGrandButton = new System.Windows.Forms.Button();
            this.comboBox1 = new System.Windows.Forms.ComboBox();
            this.showSelectedButton = new System.Windows.Forms.Button();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.findButton = new System.Windows.Forms.Button();
            this.label1 = new System.Windows.Forms.Label();
            this.addButton.Location = new System.Drawing.Point(248, 32);
            this.addButton.Size = new System.Drawing.Size(40, 24);
            this.addButton.TabIndex = 1;
            this.addButton.Text = "Add";
            this.addButton.Click += new System.EventHandler(this.addButton_Click);
            this.textBox2.Location = new System.Drawing.Point(8, 64);
            this.textBox2.Size = new System.Drawing.Size(232, 20);
            this.textBox2.TabIndex = 6;
            this.textBox2.Text = "";
            this.addGrandButton.Location = new System.Drawing.Point(8, 96);
            this.addGrandButton.Size = new System.Drawing.Size(280, 23);
            this.addGrandButton.TabIndex = 2;
            this.addGrandButton.Text = "Add 1,000 Items";
            this.addGrandButton.Click += new System.EventHandler(this.addGrandButton_Click);
            this.comboBox1.Anchor = ((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left) 
                        | System.Windows.Forms.AnchorStyles.Right);
            this.comboBox1.DropDownWidth = 280;
            this.comboBox1.Items.AddRange(new object[] {"Item 1",
                        "Item 2",
                        "Item 3",
                        "Item 4",
                        "Item 5"});
            this.comboBox1.Location = new System.Drawing.Point(8, 248);
            this.comboBox1.Size = new System.Drawing.Size(280, 21);
            this.comboBox1.TabIndex = 7;
            this.showSelectedButton.Location = new System.Drawing.Point(8, 128);
            this.showSelectedButton.Size = new System.Drawing.Size(280, 24);
            this.showSelectedButton.TabIndex = 4;
            this.showSelectedButton.Text = "What Item is Selected?";
            this.showSelectedButton.Click += new System.EventHandler(this.showSelectedButton_Click);
            this.textBox1.Location = new System.Drawing.Point(8, 32);
            this.textBox1.Size = new System.Drawing.Size(232, 20);
            this.textBox1.TabIndex = 5;
            this.textBox1.Text = "";
            this.findButton.Location = new System.Drawing.Point(248, 64);
            this.findButton.Size = new System.Drawing.Size(40, 24);
            this.findButton.TabIndex = 3;
            this.findButton.Text = "Find";
            this.findButton.Click += new System.EventHandler(this.findButton_Click);
            this.label1.Location = new System.Drawing.Point(8, 224);
            this.label1.Size = new System.Drawing.Size(144, 23);
            this.label1.TabIndex = 0;
            this.label1.Text = "Test ComboBox";
            this.ClientSize = new System.Drawing.Size(292, 273);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {this.comboBox1,
                        this.textBox2,
                        this.textBox1,
                        this.showSelectedButton,
                        this.findButton,
                        this.addGrandButton,
                        this.addButton,
                        this.label1});
            this.Text = "ComboBox Sample";
        }
        
        private void addButton_Click(object sender, System.EventArgs e) {
           comboBox1.Items.Add(textBox1.Text);
        }

        private void addGrandButton_Click(object sender, System.EventArgs e) {
            comboBox1.BeginUpdate();
            for (int i = 0; i < 1000; i++) {
                comboBox1.Items.Add("Item 1" + i.ToString());
            }
            comboBox1.EndUpdate();
        }

        private void findButton_Click(object sender, System.EventArgs e) {
            int index = comboBox1.FindString(textBox2.Text);
            comboBox1.SelectedIndex = index;
        }

        private void showSelectedButton_Click(object sender, System.EventArgs e) {
            int selectedIndex = comboBox1.SelectedIndex;
            Object selectedItem = comboBox1.SelectedItem;

            MessageBox.Show("Selected Item Text: " + selectedItem.ToString() + "\n" +
                            "Index: " + selectedIndex.ToString());
        }
    }
}


C++
#using <System.dll>
#using <System.Drawing.dll>
#using <System.Windows.Forms.dll>

using namespace System;
using namespace System::Windows::Forms;

namespace Win32Form1Namespace
{
   public ref class Win32Form1: public System::Windows::Forms::Form
   {
   private:
      System::Windows::Forms::Button^ addButton;
      System::Windows::Forms::TextBox^ textBox2;
      System::Windows::Forms::Button^ addGrandButton;
      System::Windows::Forms::ComboBox^ comboBox1;
      System::Windows::Forms::Button^ showSelectedButton;
      System::Windows::Forms::TextBox^ textBox1;
      System::Windows::Forms::Button^ findButton;
      System::Windows::Forms::Label ^ label1;

   public:
      Win32Form1()
      {
         this->InitializeComponent();
      }

   private:
      void InitializeComponent()
      {
         this->addButton = gcnew System::Windows::Forms::Button;
         this->textBox2 = gcnew System::Windows::Forms::TextBox;
         this->addGrandButton = gcnew System::Windows::Forms::Button;
         this->comboBox1 = gcnew System::Windows::Forms::ComboBox;
         this->showSelectedButton = gcnew System::Windows::Forms::Button;
         this->textBox1 = gcnew System::Windows::Forms::TextBox;
         this->findButton = gcnew System::Windows::Forms::Button;
         this->label1 = gcnew System::Windows::Forms::Label;
         this->addButton->Location = System::Drawing::Point( 248, 32 );
         this->addButton->Size = System::Drawing::Size( 40, 24 );
         this->addButton->TabIndex = 1;
         this->addButton->Text = "Add";
         this->addButton->Click += gcnew System::EventHandler(
            this, &Win32Form1::addButton_Click );
         this->textBox2->Location = System::Drawing::Point( 8, 64 );
         this->textBox2->Size = System::Drawing::Size( 232, 20 );
         this->textBox2->TabIndex = 6;
         this->textBox2->Text = "";
         this->addGrandButton->Location = System::Drawing::Point( 8, 96 );
         this->addGrandButton->Size = System::Drawing::Size( 280, 23 );
         this->addGrandButton->TabIndex = 2;
         this->addGrandButton->Text = "Add 1, 000 Items";
         this->addGrandButton->Click += gcnew System::EventHandler(
            this, &Win32Form1::addGrandButton_Click );
         this->comboBox1->Anchor = (System::Windows::Forms::AnchorStyles)(
            (System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Left) |
             System::Windows::Forms::AnchorStyles::Right);
         this->comboBox1->DropDownWidth = 280;
         array<Object^>^ objectArray = {"Item 1",
            "Item 2",
            "Item 3",
            "Item 4",
            "Item 5"};
         this->comboBox1->Items->AddRange( objectArray );
         this->comboBox1->Location = System::Drawing::Point( 8, 248 );
         this->comboBox1->Size = System::Drawing::Size( 280, 21 );
         this->comboBox1->TabIndex = 7;
         this->showSelectedButton->Location = System::Drawing::Point( 8, 128 );
         this->showSelectedButton->Size = System::Drawing::Size( 280, 24 );
         this->showSelectedButton->TabIndex = 4;
         this->showSelectedButton->Text = "What Item is Selected?";
         this->showSelectedButton->Click += gcnew System::EventHandler( 
            this, &Win32Form1::showSelectedButton_Click );
         this->textBox1->Location = System::Drawing::Point( 8, 32 );
         this->textBox1->Size = System::Drawing::Size( 232, 20 );
         this->textBox1->TabIndex = 5;
         this->textBox1->Text = "";
         this->findButton->Location = System::Drawing::Point( 248, 64 );
         this->findButton->Size = System::Drawing::Size( 40, 24 );
         this->findButton->TabIndex = 3;
         this->findButton->Text = "Find";
         this->findButton->Click += gcnew System::EventHandler( 
            this, &Win32Form1::findButton_Click );
         this->label1->Location = System::Drawing::Point( 8, 224 );
         this->label1->Size = System::Drawing::Size( 144, 23 );
         this->label1->TabIndex = 0;
         this->label1->Text = "Test ComboBox";
         this->ClientSize = System::Drawing::Size( 292, 273 );
         array<System::Windows::Forms::Control^>^ controlsArray = {this->comboBox1,
            this->textBox2,
            this->textBox1,
            this->showSelectedButton,
            this->findButton,
            this->addGrandButton,
            this->addButton,
            this->label1};
         this->Controls->AddRange( controlsArray );
         this->Text = "ComboBox Sample";
      }

      void addButton_Click( Object^ sender, System::EventArgs^ e )
      {
         comboBox1->Items->Add( textBox1->Text );
      }

      void addGrandButton_Click( Object^ sender, System::EventArgs^ e )
      {
         comboBox1->BeginUpdate();
         for ( int i = 0; i < 1000; i++ )
         {
            comboBox1->Items->Add( "Item 1 " + i.ToString() );

         }
         comboBox1->EndUpdate();
      }

      void findButton_Click( Object^ sender, System::EventArgs^ e )
      {
         int index = comboBox1->FindString( textBox2->Text );
         comboBox1->SelectedIndex = index;
      }

      void showSelectedButton_Click( Object^ sender, System::EventArgs^ e )
      {
         int selectedIndex = comboBox1->SelectedIndex;
         Object^ selectedItem = comboBox1->SelectedItem;
         MessageBox::Show( "Selected Item Text: " + selectedItem->ToString() + "\n" +
            "Index: " + selectedIndex.ToString() );
      }
   };
}


[System::STAThreadAttribute]
int main()
{
   System::Windows::Forms::Application::Run( gcnew Win32Form1Namespace::Win32Form1 );
}


J#
package Win32Form1Namespace;

import System.*;
import System.Windows.Forms.*;

public class Win32Form1 extends System.Windows.Forms.Form
{
    private System.Windows.Forms.Button addButton;
    private System.Windows.Forms.TextBox textBox2;
    private System.Windows.Forms.Button addGrandButton;
    private System.Windows.Forms.ComboBox comboBox1;
    private System.Windows.Forms.Button showSelectedButton;
    private System.Windows.Forms.TextBox textBox1;
    private System.Windows.Forms.Button findButton;
    private System.Windows.Forms.Label label1;

    public Win32Form1()
    {
        this.InitializeComponent();
    } //Win32Form1

    /** @attribute System.STAThreadAttribute()
     */
    public static void main(String[] args)
    {
        System.Windows.Forms.Application.Run(new Win32Form1());
    } //main
    
    private void InitializeComponent()
    {
        this.addButton = new System.Windows.Forms.Button();
        this.textBox2 = new System.Windows.Forms.TextBox();
        this.addGrandButton = new System.Windows.Forms.Button();
        this.comboBox1 = new System.Windows.Forms.ComboBox();
        this.showSelectedButton = new System.Windows.Forms.Button();
        this.textBox1 = new System.Windows.Forms.TextBox();
        this.findButton = new System.Windows.Forms.Button();
        this.label1 = new System.Windows.Forms.Label();
        this.addButton.set_Location(new System.Drawing.Point(248, 32));
        this.addButton.set_Size(new System.Drawing.Size(40, 24));
        this.addButton.set_TabIndex(1);
        this.addButton.set_Text("Add");
        this.addButton.add_Click(new System.EventHandler(this.addButton_Click));
        this.textBox2.set_Location(new System.Drawing.Point(8, 64));
        this.textBox2.set_Size(new System.Drawing.Size(232, 20));
        this.textBox2.set_TabIndex(6);
        this.textBox2.set_Text("");
        this.addGrandButton.set_Location(new System.Drawing.Point(8, 96));
        this.addGrandButton.set_Size(new System.Drawing.Size(280, 23));
        this.addGrandButton.set_TabIndex(2);
        this.addGrandButton.set_Text("Add 1,000 Items");
        this.addGrandButton.add_Click(new System.EventHandler(
            this.addGrandButton_Click));
        this.comboBox1.set_Anchor(System.Windows.Forms.AnchorStyles.Bottom
            | System.Windows.Forms.AnchorStyles.Left
            | System.Windows.Forms.AnchorStyles.Right);
        this.comboBox1.set_DropDownWidth(280);
        this.comboBox1.get_Items().AddRange(new Object[] 
            { "Item 1", "Item 2", "Item 3", "Item 4", "Item 5" });
        this.comboBox1.set_Location(new System.Drawing.Point(8, 248));
        this.comboBox1.set_Size(new System.Drawing.Size(280, 21));
        this.comboBox1.set_TabIndex(7);
        this.showSelectedButton.set_Location(new System.Drawing.Point(8, 128));
        this.showSelectedButton.set_Size(new System.Drawing.Size(280, 24));
        this.showSelectedButton.set_TabIndex(4);
        this.showSelectedButton.set_Text("What Item is Selected?");
        this.showSelectedButton.add_Click(new System.EventHandler(
            this.showSelectedButton_Click));
        this.textBox1.set_Location(new System.Drawing.Point(8, 32));
        this.textBox1.set_Size(new System.Drawing.Size(232, 20));
        this.textBox1.set_TabIndex(5);
        this.textBox1.set_Text("");
        this.findButton.set_Location(new System.Drawing.Point(248, 64));
        this.findButton.set_Size(new System.Drawing.Size(40, 24));
        this.findButton.set_TabIndex(3);
        this.findButton.set_Text("Find");
        this.findButton.add_Click(new System.EventHandler(
            this.findButton_Click));
        this.label1.set_Location(new System.Drawing.Point(8, 224));
        this.label1.set_Size(new System.Drawing.Size(144, 23));
        this.label1.set_TabIndex(0);
        this.label1.set_Text("Test ComboBox");
        this.set_ClientSize(new System.Drawing.Size(292, 273));
        this.get_Controls().AddRange(new System.Windows.Forms.Control[]
            { this.comboBox1, this.textBox2, this.textBox1,
            this.showSelectedButton, this.findButton, this.addGrandButton,
            this.addButton, this.label1 });
        this.set_Text("ComboBox Sample");
    } //InitializeComponent

    private void addButton_Click(Object sender, System.EventArgs e)
    {
        comboBox1.get_Items().Add(textBox1.get_Text());
    } //addButton_Click

    private void addGrandButton_Click(Object sender, System.EventArgs e)
    {
        comboBox1.BeginUpdate();
        for (int i = 0; i < 1000; i++) {
            comboBox1.get_Items().Add("Item 1" + ((Int32)i).ToString());
        }
        comboBox1.EndUpdate();
    } //addGrandButton_Click

    private void findButton_Click(Object sender, System.EventArgs e)
    {
        int index = comboBox1.FindString(textBox2.get_Text());
        comboBox1.set_SelectedIndex(index);
    } //findButton_Click

    private void showSelectedButton_Click(Object sender, System.EventArgs e)
    {
        int selectedIndex = comboBox1.get_SelectedIndex();
        Object selectedItem = comboBox1.get_SelectedItem();
        MessageBox.Show("Selected Item Text: " + selectedItem.ToString() 
            + "\n" + "Index: " + ((Int32)selectedIndex).ToString());
    } //showSelectedButton_Click
Hiérarchie d'héritageHiérarchie d'héritage
System.Object
   System.MarshalByRefObject
     System.ComponentModel.Component
       System.Windows.Forms.Control
         System.Windows.Forms.ListControl
          System.Windows.Forms.ComboBox
             Microsoft.CLRAdmin.DataGridComboBox
             System.Windows.Forms.DataGridViewComboBoxEditingControl
Sécurité des threadsSécurité des threads
Les membres statiques publics (Shared en Visual Basic) de ce type sont thread-safe. Il n'est pas garanti que les membres d'instance soient thread-safe.
Plates-formesPlates-formes

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile pour Pocket PC, Windows Mobile pour Smartphone, Windows Server 2003, Windows XP Édition Media Center, Windows XP Professionnel Édition x64, Windows XP SP2, Windows XP Starter Edition

Le .NET Framework ne prend pas en charge toutes les versions de chaque plate-forme. Pour obtenir la liste des versions prises en charge, consultez Configuration requise.

Informations de versionInformations de version

.NET Framework

Prise en charge dans : 2.0, 1.1, 1.0

.NET Compact Framework

Prise en charge dans : 2.0, 1.0
Voir aussiVoir aussi

Ces informations proviennent du site de http://msdn2.microsoft.com
Source de cette page : http://msdn2.microsoft.com/fr-fr/library/system.windows.forms.combobox.aspx

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classe combobox form Gaudry Signaler une erreur Stéphane Gaudry system system-window-form-combobox window

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Astuce pour imprimer les couleurs des cellules de tableaux : http://www.gaudry.be/ast-rf-450.html
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Document créé le 30/10/06 03:38, dernière modification le Vendredi 17 Juin 2011, 12:11
Source du document imprimé : http://www.gaudry.be/dotnet-rf-system.windows.forms.combobox.html Document affiché 1 fois ce mois de Juin.
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