COUNTDOWN - COMPTE-À-REBOURS

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Collections
Imports System.ComponentModel
'
Public Partial Class MainForm
	Public Sub New()
		' The Me.InitializeComponent call is required for Windows Forms designer support.
		Me.InitializeComponent()
		'
	End Sub
	
    Dim I As Integer 'Inactive 
    Dim DepartX As Short 'Used to move form
    Dim DepartY As Short 'Used to move form
    Dim H As Integer 'Hours
    Dim M As Integer 'Minutes
    Dim S As Integer 'Seconds
    Dim T As String  'Time
    Dim MyError As String 'Error
    'Dim Resultat As Integer 'Value for countdown

    Private Sub Form1Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Label1.Text = System.DateTime.Now.ToLongTimeString
    End Sub

	Private Sub Button1Click(ByVal sender As Object, ByVal e As EventArgs)
		H = textBox1.Text
        M = textBox2.Text
        S = textBox3.Text
    If H = 0 And M = 0 And S = 1 Then System.Windows.Forms.MessageBox.Show( "Seconds must be greater than 1 !" ) : Timer2.Stop
        Timer2.Enabled = True
        Timer2.Start
        Me.Button1.Enabled = "False"
        Me.Button2.Enabled = "True"
        Me.Button2.Text = "stop"
	End Sub
		
	Private Sub Button2Click(ByVal sender As Object, ByVal e As EventArgs)
		Me.Button1.Enabled = "True"
		Me.Button2.Enabled = "False"
		Timer2.Stop
		Label2.Text = "00:00:00"
	End Sub
	
	Private	Sub Button3Click(ByVal sender As Object, ByVal e As EventArgs)
		Me.Close
	End Sub
	
	Sub Timer1Tick(ByVal sender As Object, ByVal e As EventArgs)
		'This timer is permanently active as it shows the system time
        Label1.Text = System.DateTime.Now.ToLongTimeString
	End Sub
	
	Sub Timer2Tick(ByVal sender As Object, ByVal e As EventArgs)
		'Count down
        S = S - 1
        If S = 0 Then S = 60 : M = M - 1
        If M = 0 Then M = 60 : H = H - 1
        If H = 0 Then H = 24
        
        'Small errors management
        If S > 60 OR M > 60 OR H > 24 Then System.Windows.Forms.MessageBox.Show( "Value does not exist !" )

        T = TimeSerial(H, M, S)
        Label2.Text = T

		'Plays a sound when countdown reaches 00:00:00
		Dim Snd As New System.Media.SoundPlayer("C:\Windows\Media\tada.wav")
				
        If T = "00:00:00" Then Timer2.Stop : System.Windows.Forms.MessageBox.Show( "Countdown reached !" ) : Me.Button2.Text = "reset" : Label2.Text = T : Snd.Play()
	End Sub
	
End Class