带标签倒计时的C#计时器。 [英] C# Timer with a label countdown.
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问题描述
嘿,
所以我一直在研究我的项目几个小时,并考虑一个计时器。所以它应该像这样工作,在一个应用程序应该是一个标签,标签为5:00分钟,这是一个倒计时零,我应该使用什么代码?顺便说一句,我使用VB.NET 2017
So i've been working on my project for few hours, and thinking about a timer. So it should work like that, in an app should be a label with an 5:00 Minute label, which is counting down to zero, what code should i have to use? Btw i use VB.NET 2017
推荐答案
嗨GeyBen420,
Hi GeyBen420,
请参考:
Please refer to this:
Public Class Form3
Private startTime As DateTime
Private Sub Form3_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Label1.Text = TimeSpan.FromMinutes(5).ToString("mm\:ss")
Timer1.Interval = 1000
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
startTime = DateTime.Now
Timer1.Start()
End Sub
Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
Label1.Text = (TimeSpan.FromMinutes(5) - (DateTime.Now - startTime)).ToString("mm\:ss")
End Sub
End Class
问候,
Frankie
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