ListBox.Items.Clear() : ListBox « System.Windows.Forms « VB.Net by API

1. VB.Net by API
2. System.Windows.Forms
3. ListBox

ListBox.Items.Clear()

  

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

   
    
  

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