[英]Countdown timer in asp.net
我正在使用帶有C#的asp.net 3.5。 我想創建一個倒數計時器,我的要求是這樣的:
倒計時結束日期:2010年6月16日所以,直到6月16日,我的計時器將顯示重新計時的時間。
請讓我知道如何實現它,我谷歌它但我沒有得到我的問題的解決方案。
提前致謝。
這是您需要使用Javascript解決的問題。 您需要從服務器執行的唯一操作是將結束日期設置為Javascript變量。 您需要Javascript,因為您只從服務器加載頁面。 之后,您需要處理客戶端的倒計時。
使用Javascript
<script type="text/javascript">
function countdown_clock(clockID, year, month, day, hour, minute) {
countdown(clockID, year, month, day, hour, minute);
}
function countdown(clockID, year, month, day, hour, minute) {
Today = new Date();
Todays_Year = Today.getFullYear();
Todays_Month = Today.getMonth();
//Convert both today's date and the target date into miliseconds.
Todays_Date = (new Date(Todays_Year, Todays_Month, Today.getDate(),
Today.getHours(), Today.getMinutes(), Today.getSeconds())).getTime();
Target_Date = (new Date(year, month - 1, day, hour, minute, 00)).getTime();
//Find their difference, and convert that into seconds.
Time_Left = Math.round((Target_Date - Todays_Date) / 1000);
if (Time_Left < 0)
Time_Left = 0;
days = Math.floor(Time_Left / (60 * 60 * 24));
Time_Left %= (60 * 60 * 24);
hours = Math.floor(Time_Left / (60 * 60));
Time_Left %= (60 * 60);
minutes = Math.floor(Time_Left / 60);
Time_Left %= 60;
seconds = Time_Left;
dps = 's'; hps = 's'; mps = 's'; sps = 's';
//ps is short for plural suffix.
if (days == 1) dps = '';
if (hours == 1) hps = '';
if (minutes == 1) mps = '';
if (seconds == 1) sps = '';
var clock = document.getElementById(clockID);
clock.innerHTML = days + ' day' + dps + ' ';
clock.innerHTML += hours + ' hour' + hps + ' ';
clock.innerHTML += minutes + ' minute' + mps + ' and ';
clock.innerHTML += seconds + ' second' + sps;
//Recursive call, keeps the clock ticking.
setTimeout('countdown("' + clockID + '",' + year + ',' + month + ',' + day + ',' + hour + ',' + minute + ');', 1000);
}
</script>
ASP.NET
protected override void OnPreRender(EventArgs e)
{
DateTime endDate = new DateTime(2010, 6, 1, 0, 0, 0);
string script = string.Format("countdown_clock('clock', {0}, {1}, {2}, {3}, {4});", endDate.Year, endDate.Month, endDate.Day, endDate.Hour, endDate.Minute);
ScriptManager.RegisterStartupScript(this, this.GetType(), "countdown", script, true);
base.OnPreRender(e);
}
腳本從My Little Scripts中修改為例。
如果您喜歡它,請使用DateTime。
DateTime EventTime = new DateTime(2010, 6, 16);
TimeSpan Duration = EventTime - DateTime.Now;
string TimeTillEvent = Duration.ToString();
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