VB.Net by API/System.Windows.Forms/RadioButton

RadioButton.CheckedChanged

  
Option Strict On
Imports System.Windows.Forms
public class RadioButtonState
   public Shared Sub Main
        Application.Run(New 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 GroupBox1 As System.Windows.Forms.GroupBox
   Friend WithEvents RadioButton1 As System.Windows.Forms.RadioButton
   Friend WithEvents RadioButton2 As System.Windows.Forms.RadioButton
   Friend WithEvents RadioButton3 As System.Windows.Forms.RadioButton
   Friend WithEvents Button1 As System.Windows.Forms.Button
   "Required by the Windows Form Designer
   Private components As System.ruponentModel.IContainer
   "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.GroupBox1 = New System.Windows.Forms.GroupBox()
      Me.RadioButton3 = New System.Windows.Forms.RadioButton()
      Me.RadioButton2 = New System.Windows.Forms.RadioButton()
      Me.RadioButton1 = New System.Windows.Forms.RadioButton()
      Me.Button1 = New System.Windows.Forms.Button()
      Me.GroupBox1.SuspendLayout()
      Me.SuspendLayout()
      "
      "GroupBox1
      "
      Me.GroupBox1.Controls.AddRange(New System.Windows.Forms.Control() {Me.RadioButton3, Me.RadioButton2, Me.RadioButton1})
      Me.GroupBox1.Location = New System.Drawing.Point(40, 32)
      Me.GroupBox1.Name = "GroupBox1"
      Me.GroupBox1.Size = New System.Drawing.Size(240, 160)
      Me.GroupBox1.TabIndex = 0
      Me.GroupBox1.TabStop = False
      Me.GroupBox1.Text = "Choose a button:"
      "
      "RadioButton3
      "
      Me.RadioButton3.Location = New System.Drawing.Point(40, 104)
      Me.RadioButton3.Name = "RadioButton3"
      Me.RadioButton3.Size = New System.Drawing.Size(144, 24)
      Me.RadioButton3.TabIndex = 2
      Me.RadioButton3.Text = "RadioButton3"
      "
      "RadioButton2
      "
      Me.RadioButton2.Location = New System.Drawing.Point(40, 64)
      Me.RadioButton2.Name = "RadioButton2"
      Me.RadioButton2.Size = New System.Drawing.Size(144, 24)
      Me.RadioButton2.TabIndex = 1
      Me.RadioButton2.Text = "RadioButton2"
      "
      "RadioButton1
      "
      Me.RadioButton1.Checked = True
      Me.RadioButton1.Location = New System.Drawing.Point(40, 32)
      Me.RadioButton1.Name = "RadioButton1"
      Me.RadioButton1.Size = New System.Drawing.Size(144, 24)
      Me.RadioButton1.TabIndex = 0
      Me.RadioButton1.TabStop = True
      Me.RadioButton1.Text = "RadioButton1"
      "
      "Button1
      "
      Me.Button1.Location = New System.Drawing.Point(56, 216)
      Me.Button1.Name = "Button1"
      Me.Button1.Size = New System.Drawing.Size(168, 23)
      Me.Button1.TabIndex = 1
      Me.Button1.Text = "Which is Selected?"
      "
      "Form1
      "
      Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
      Me.ClientSize = New System.Drawing.Size(292, 266)
      Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Button1, Me.GroupBox1})
      Me.Name = "Form1"
      Me.Text = "Form1"
      Me.GroupBox1.ResumeLayout(False)
      Me.ResumeLayout(False)
   End Sub
#End Region
   Private Sub RadioButton1_CheckedChanged(ByVal sender As Object, _
       ByVal e As System.EventArgs) Handles RadioButton1.CheckedChanged, _
       RadioButton2.CheckedChanged, RadioButton3.CheckedChanged
   End Sub
   Private Sub Button1_Click(ByVal sender As Object, _
       ByVal e As System.EventArgs) Handles Button1.Click
      Dim c As Object
      For Each c In Me.GroupBox1.Controls
         If TypeOf (c) Is RadioButton Then
            Dim rb As RadioButton = CType(c, RadioButton)
            If rb.Checked = True Then
               MsgBox(CStr(rb.Name) & " is selected")
               Exit For
            End If
         End If
      Next
   End Sub
End Class

RadioButton.Text

  
Imports System.Windows.Forms
Module Module1
    Sub Main()
        Application.Run(New Form1)
    End Sub
End Module

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
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "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.
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents RadioButton1 As System.Windows.Forms.RadioButton
    Friend WithEvents RadioButton2 As System.Windows.Forms.RadioButton
    Friend WithEvents RadioButton3 As System.Windows.Forms.RadioButton
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label()
        Me.RadioButton1 = New System.Windows.Forms.RadioButton()
        Me.RadioButton2 = New System.Windows.Forms.RadioButton()
        Me.RadioButton3 = New System.Windows.Forms.RadioButton()
        Me.SuspendLayout()
        "
        "Label1
        "
        Me.Label1.Location = New System.Drawing.Point(32, 152)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(232, 23)
        Me.Label1.TabIndex = 0
        "
        "RadioButton1
        "
        Me.RadioButton1.Location = New System.Drawing.Point(32, 24)
        Me.RadioButton1.Name = "RadioButton1"
        Me.RadioButton1.TabIndex = 1
        Me.RadioButton1.Text = "Windows 2000"
        "
        "RadioButton2
        "
        Me.RadioButton2.Location = New System.Drawing.Point(32, 64)
        Me.RadioButton2.Name = "RadioButton2"
        Me.RadioButton2.TabIndex = 2
        Me.RadioButton2.Text = "Linux"
        "
        "RadioButton3
        "
        Me.RadioButton3.Location = New System.Drawing.Point(32, 104)
        Me.RadioButton3.Name = "RadioButton3"
        Me.RadioButton3.TabIndex = 3
        Me.RadioButton3.Text = "Mac OS"
        "
        "Form1
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(296, 213)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.RadioButton3, Me.RadioButton2, Me.RadioButton1, Me.Label1})
        Me.Name = "Form1"
        Me.Text = "RadioButtonDemo"
        Me.ResumeLayout(False)
    End Sub
#End Region
    Private Sub RadioButton1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadioButton1.Click
        Label1.Text = "Current choice: " & RadioButton1.Text
        Label1.Refresh()
    End Sub
    Private Sub RadioButton2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadioButton2.Click
        Label1.Text = "Current choice: " & RadioButton2.Text
        Label1.Refresh()
    End Sub
    Private Sub RadioButton3_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadioButton3.Click
        Label1.Text = "Current choice: " & RadioButton3.Text
        Label1.Refresh()
    End Sub
End Class