Question

如何使用C#制作一个精确计时器，计时精度到底毫秒级别或者更高

QUESTION:设计一个1分钟的计时秒表，用两个单项按钮来控制秒表是顺序或逆序计时，精确到毫秒。界面自行设计。

Answer 1

终于写完了，代码如下：

Private Declare Function GetTickCount Lib "kernel32" () As Long
Public SStart, SEnd, Stime
Private Sub Command1_Click()
Command1.Enabled = False: Command2.Enabled = True: Command2.Default = True
SStart = GetTickCount
Text1.Text = Text1.Text & "你点击[开始]的时间：" & Now & vbCrLf
End Sub

Private Sub Command2_Click()
SEnd = GetTickCount
Stime = Val(SEnd - SStart)
Text1.Text = Text1.Text & "你点击[停止]的时间：" & Now & vbCrLf & "已经过时间：" & Stime \ 1000 & "秒" & Stime Mod 1000 & "毫秒" & vbCrLf
End Sub

Private Sub Form_Load()
Command1.Caption = "开始": Command2.Caption = "停止": Command2.Enabled = False: Text1.Text = "": Command1.Default = True
End Sub

Answer 2

c#本来就有timer控件，直接就可以用，精度可以调的！

Answer 3

ytu77u

Answer 4

写一个TIME类 代码：
class TIME
{
private int hour;
private int minute;
private int second;
private bool isInc;
private bool isDec;
public int Hour
{
get
{
return this.hour;
}
set
{
this.hour = value;
}
}
public int Minute
{
get
{
return this.minute;
}
set
{
this.minute = value;
}
}
public int Second
{
get
{
return this.second;
}
set
{
this.second = value;
}
}
public bool IsInc
{
get
{
return this.isInc;
}
set
{
this.isInc = value;
}
}
public bool IsDec
{
get
{
return this.isDec;
}
set
{

this.isDec = value;
}
}
public void incease()
{
if (this.Second < 60)
this.Second++;
else
{
if (this.minute < 60)
this.minute++;
else
{
this.hour++;
}
}
}
public void decrease()
{
if (this.Second > 0)
this.Second--;
else
{
if (this.minute > 0)
this.minute--;
else
{
this.minute = 59;
this.hour--;
}
}

}
}
主窗体中的代码：
TIME time;
private void Form1_Load(object sender, EventArgs e)
{
//this.getList();
time = new TIME();
time.Second = int.Parse(System.DateTime.Now.Second.ToString());
time.Minute = int.Parse(System.DateTime.Now.Minute.ToString());
time.Hour = int.Parse(System.DateTime.Now.Hour.ToString());
}

private void timer1_Tick(object sender, EventArgs e)
{
if (time.IsInc)
time.incease();
else
{
time.decrease();
}
label1.Text = time.Hour.ToString() + ":" + time.Minute.ToString() + ":" + time.Second.ToString();
}

private void increase_btn_Click(object sender, EventArgs e)
{
time.IsInc = true;
time.IsDec = false;
}

private void decrease_btn_Click(object sender, EventArgs e)
{
time.IsDec = true;
time.IsInc = false;
}
这个实现的是现在以秒为单位的倒计时 你可以根据需要调节TIME的INTERVAL属性来实现你需要的功能

Answer 5

要用c#调用dll的api,可以百度有类似的文章。