Add Item to a List Box by clicking a Button
Imports System
Imports System.Windows.Forms
Public Class MainClass
Shared Sub Main()
Dim form1 As Form1 = new Form1
Application.Run(form1)
End Sub
End Class
Public Class Form1
Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
Public Sub New()
MyBase.New()
'This call is required by the Windows Form Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
End Sub
'Form overrides dispose to clean up the component list.
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 Button1 As System.Windows.Forms.Button
Friend WithEvents ListBox1 As System.Windows.Forms.ListBox
'Required by the Windows Form Designer
Private components As System.ComponentModel.Container
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.Button1 = New System.Windows.Forms.Button()
Me.ListBox1 = New System.Windows.Forms.ListBox()
Me.SuspendLayout()
'
'Button1
'
Me.Button1.Location = New System.Drawing.Point(32, 328)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing.Size(280, 32)
Me.Button1.TabIndex = 0
Me.Button1.Text = "Show hidden files"
'
'ListBox1
'
Me.ListBox1.HorizontalScrollbar = True
Me.ListBox1.ItemHeight = 16
Me.ListBox1.Location = New System.Drawing.Point(24, 56)
Me.ListBox1.Name = "ListBox1"
Me.ListBox1.ScrollAlwaysVisible = True
Me.ListBox1.Size = New System.Drawing.Size(280, 244)
Me.ListBox1.TabIndex = 1
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(6, 15)
Me.ClientSize = New System.Drawing.Size(328, 384)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.ListBox1, Me.Button1})
Me.Name = "Form1"
Me.Text = "Add to List Box"
Me.ResumeLayout(False)
End Sub
#End Region
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
Me.Cursor = System.Windows.Forms.Cursors.WaitCursor
ListBox1.Items.Clear()
ListBox1.Items.Add("Item A")
Me.Cursor = System.Windows.Forms.Cursors.Default
End Sub
End Class
Related examples in the same category
