ComboBox selection event and Add items : ComboBox « GUI « VB.Net Tutorial






ComboBox selection event and Add items
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

    Private components As System.ComponentModel.IContainer

    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








14.6.ComboBox
14.6.1.Get Text from ComboBoxGet Text from ComboBox
14.6.2.Set text for ComboBoxSet text for ComboBox
14.6.3.ComboBox Selected Index Changed eventComboBox Selected Index Changed event
14.6.4.Add value to ComboBoxAdd value to ComboBox
14.6.5.ComboBox selection event and Add itemsComboBox selection event and Add items
14.6.6.Using ComboBox to select shape to drawUsing ComboBox to select shape to draw
14.6.7.ComboBox Cell rendererComboBox Cell renderer
14.6.8.Use ComboBox to control TextBox font colorUse ComboBox to control TextBox font color
14.6.9.HatchBrush Illustration by using ComboBoxHatchBrush Illustration by using ComboBox