Timer event : Timer « GUI « VB.Net Tutorial

1. VB.Net Tutorial
2. GUI
3. Timer

Imports System.Windows.Forms

public class TimerEvent
   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 Label1 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Timer1 As System.Windows.Forms.Timer
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.components = New System.ComponentModel.Container
        Me.Label1 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.Timer1 = New System.Windows.Forms.Timer(Me.components)
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(16, 24)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(112, 24)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "Systen Date"
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(16, 80)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(112, 24)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "System Time"
        '
        'Timer1
        '
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(112, 16)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(104, 20)
        Me.TextBox1.TabIndex = 2
        Me.TextBox1.Text = ""
        '
        'TextBox2
        '
        Me.TextBox2.Location = New System.Drawing.Point(112, 72)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(104, 20)
        Me.TextBox2.TabIndex = 3
        Me.TextBox2.Text = ""
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 158)
        Me.Controls.Add(Me.TextBox2)
        Me.Controls.Add(Me.TextBox1)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.Label1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

    End Sub

    Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
        Dim TDay As String
        Dim i As Short
        TextBox2.Text = CStr(TimeOfDay)
        i = Weekday(Today)
        Select Case i
            Case 1
                TDay = "Sunday"
            Case 2
                TDay = "Monday"
            Case 3
                TDay = "Tuesday"
            Case 4
                TDay = "Wednesday"
            Case 5
                TDay = "Thursday"
            Case 6
                TDay = "Friday"
            Case 7
                TDay = "Saturday"
        End Select
        TextBox1.Text = TDay & "," & Today
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Me.Timer1.Start()
    End Sub
End Class

14.90.Timer
	14.90.1.	Timer interval
	14.90.2.	Use Timer to refresh Label
	14.90.3.	Timer event
	14.90.4.	Timer Start and Stop
	14.90.5.	Scrolling Text by Timer
	14.90.6.	Use three timers
	14.90.7.	Set up an event handler for the Timer.Elapsed event, creates a timer, and starts the timer