How Use Combo Box in VB.Net

In this tutorial we will learn how to use Combo box and how add value in combo box in VB.Net
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Here we see how add value on Combo box

Code behind a Program Related to Combo box is

Imports
System.Windows.Forms
Public
Class ComboBoxAddSelection
    Public Shared Sub Main()
        Application.Run(New Form1)
    End Sub

End
Class
Public
Class Form1
    Inherits System.Windows.Forms.Form
    Public Sub New()
        MyBase.New()
        InitializeComponent()
    End Sub
 
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub
    Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Label1 As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.ComboBox1 = New System.Windows.Forms.ComboBox
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.Label1 = New System.Windows.Forms.Label
        Me.SuspendLayout()
        '
        'ComboBox1
        '
        Me.ComboBox1.Items.AddRange(New Object() {"AAAAA", "BBBBB", "CCCCC"})
        Me.ComboBox1.Location = New System.Drawing.Point(48, 16)
        Me.ComboBox1.Name = "ComboBox1"
        Me.ComboBox1.Size = New System.Drawing.Size(144, 21)
        Me.ComboBox1.TabIndex = 0
        Me.ComboBox1.Text = "Select"
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(24, 64)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(96, 20)
        Me.TextBox1.TabIndex = 1
        Me.TextBox1.Text = ""

        '        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(144, 64)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(96, 24)
        Me.Button1.TabIndex = 2
        Me.Button1.Text = "Add"
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(40, 120)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(168, 24)
        Me.Label1.TabIndex = 3
        Me.Label1.Text = "Select"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)        Me.ClientSize = New System.Drawing.Size(264, 182)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.TextBox1)
        Me.Controls.Add(Me.ComboBox1)
        Me.ResumeLayout(False)
    End Sub
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        ComboBox1.Items.Add(TextBox1.Text)
        TextBox1.Text = ""
    End Sub

 
    Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles
ComboBox1.SelectedIndexChanged
        Select Case ComboBox1.SelectedIndex
            Case 0
                Label1.Text = "A"
            Case 1
                Label1.Text = "B"
            Case 2
                Label1.Text = "C"
        End Select
    End Sub

End
Class

Output of the application

combo.jpg

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