AJAX - ASP.NET - 计时器延迟问题
我正在尝试制作一个网络应用程序，您可以在其中看到 Ajax 倒计时器。每当我按下按钮时，倒计时就会回到 30 并继续倒计时。
现在的问题是，每当我按下按钮时，计时器就会持续倒计时一到两秒，之后的大多数时间，计时器都会在 30 上保持很长时间。
网页表单代码：
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Label ID="Label1" runat="server" Text="geen verbinding"></asp:Label>
<br />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
<br />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
</asp:UpdatePanel>
<asp:Timer ID="Timer1" runat="server" Interval="1000" ontick="Timer1_Tick">
</asp:Timer>
</form>
代码隐藏：
static int timer = 30;
protected void Page_Load(object sender, EventArgs e)
{
Label1.Text = timer.ToString();
}
protected void Timer1_Tick(object sender, EventArgs e)
{
timer--;
}
protected void Button1_Click(object sender, EventArgs e)
{
timer = 30;
}
希望有人知道问题是什么以及是否有解决办法。
提前致谢！
I'm trying to make an webapplication where you see an Ajax countdown timer. Whenever I push a button the countdown should go back to 30 and keep counting down.
Now the problem is whenever I push the button the timer keeps counting down for a second or 2 and most of the time after that the timer keeps standing on 30 for to long.
WebForm code:
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Label ID="Label1" runat="server" Text="geen verbinding"></asp:Label>
<br />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
<br />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
</asp:UpdatePanel>
<asp:Timer ID="Timer1" runat="server" Interval="1000" ontick="Timer1_Tick">
</asp:Timer>
</form>
Code Behind:
static int timer = 30;
protected void Page_Load(object sender, EventArgs e)
{
Label1.Text = timer.ToString();
}
protected void Timer1_Tick(object sender, EventArgs e)
{
timer--;
}
protected void Button1_Click(object sender, EventArgs e)
{
timer = 30;
}
Hope somebody knows what the problem is and if there is anyway to fix this.
Thanks in advance!
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评论（1）
为什么不完全在客户端实现计时器？你能解释一下为什么它必须是回调吗？它需要在服务器上做什么？
在正文标签中...
以及要显示的地方
您只需添加一个按钮，调用resetTimer()。我把它留给你
Why don't you implement the Timer entirely on the ClientSide? Can you explain why it has to be a callback? What does it need to do on the Server?
And in the body tag...
And somewhere to display
You justy have to add a button chich calls resetTimer(). I'll leave that to you