跪求用vb.net做一个小闹钟！！

'加个定时器,textbox ,button,label Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick

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Label1.Text = Now

If FF = Now And FF "2001-1-1" And Timer1.Tag = "" Then

Timer1.Tag = "1"

MsgBox("ff")

End If

End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

FF = TextBox1.Text

Timer1.Tag = ""

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

FF = "2001-1-1"

End Sub'声音加个 AxMMControl控件 AxMMControl1.DeviceType = "waveaudio" ''''''''定义播放*.wav格式 AxMMControl1.FileName = "c:\1.wav" ''''''''载入文件， AxMMControl1.Command = "open" ''''''''打开载入的文件

AxMMControl1.From = 0 '从头开始

AxMMControl1.Command = "play"'保存时间,只要设定时把时间保存到文本文件就行,load 事件中读取,并对比是不是超时,.

vb.net 我想编一个计时器，计时器显示格式00:00:00 （只能用一个label）怎么做？

Dim hour, min, sec As Integer

Private Sub Command1_Click()

If Command1.Caption = "开始计时" Then

Command1.Caption = "停止计时"

Timer1.Enabled = True

Else

If Command1.Caption = "停止计时" Then

Command1.Caption = "开始计时"

Timer1.Enabled = False

End If

End If

End Sub

Private Sub Form_Load()

hour = 0

min = 0

sec = 0

Label1.Caption = Format(hour, "00") ":" Format(min, "00") ":" Format(sec, "00")

End Sub

Private Sub Timer1_Timer()

sec = sec + 1

If sec 59 Then

sec = 0

min = min + 1

If min 59 Then

min = 0

hour = hour + 1

End If

End If

Label1.Caption = ""

Label1.Caption = Format(hour, "00") ":" Format(min, "00") ":" Format(sec, "00")

End Sub

利用vb.net实现小闹钟功能

Private Declare Function mciSendStringA Lib "winmm.dll" _

(ByVal lpstrCommand As String, ByVal lpstrReturnString As String, _

ByVal uReturnLength As Integer, ByVal hwndCallback As Integer) As Integer

Function PlayMidiFile(ByVal MusicFile As String) As Boolean

If System.IO.File.Exists(MusicFile) Then

mciSendStringA("stop music", "", 0, 0)

mciSendStringA("close music", "", 0, 0)

mciSendStringA("open " MusicFile " alias music", "", 0, 0)

PlayMidiFile = mciSendStringA("play music", "", 0, 0) = 0

End If

End Function

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick

If TextBox1.Text = TimeOfDay Then

'具体提醒的东西，如你说的播放音乐

PlayMidiFile("自己添加路径")

End If

'时间格式要是这样的16:00:00

'timer的interval要设成1

'你还可以自己细化

End Sub

vb .net 动态创建Timer控件

我从来不加到Controls中也能用，大概这个不是从Control继承而来的，所有非可视部件（即组件）估计都不需要add。

问一个VB.NET中关于时间操作的问题。

1、时间可以直接比较大小，定义两个时间的变量，直接使用或者即可判断，跟数据大小判断是一样的

2、时间差值，可以使用DateDiff函数进行

3、比如取一个现在的时间now，使用Year、month、day、hour、min、sec函数可以取到now的年份、月、日、小时、分钟和秒

用VB.net做一个时间计时器

'添加一个label标签名字label1 用来显示时间

'再添加一个timer控件 名字timer1 interval属性=1000 用来计时

'窗体添加代码

Dim t As Date '用来记录时间

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As _

System.EventArgs) Handles Timer1.Tick

t = t.AddSeconds(1)

Label1.Text = "登录时间:" t.TimeOfDay.ToString

End Sub

名称栏目：vb.net编写闹钟,vb闹钟控件
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