前台代码!
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>倒计时</title></head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<div >
距离
<asp:TextBox ID="TextBox1" runat="server" Text="2011-03-25 16:20:59"></asp:TextBox>
<br /><asp:Button ID="Button1" runat="server" Text="确认" Enabled="true"
Height="33px" Width="123px"/><br />还有
<asp:UpdatePanel ID="UpdatePanelCountdown" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Label ID="lblTimerDays" runat="server" Text="0" ForeColor="Red" />天
<asp:Label ID="lblTimerHours" runat="server" Text="0" ForeColor="Red" />时
<asp:Label ID="lblTimerMinutes" runat="server" Text="0" ForeColor="Red" />分
<asp:Label ID="lblTimerSeconds" runat="server" Text="0" ForeColor="Red" />秒
<asp:Timer ID="Timer1" runat="server" Interval="1000" OnTick="Timer1_Tick1" />
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>后台代码!
protected void Page_Load(object sender, EventArgs e)
{
string time = this.TextBox1.Text;
DateTime EndTime = Convert.ToDateTime(time);//结束时间
TimeSpan CountdownSpan;//时间间隔 if (!IsPostBack)
{
DateTime NowTime = DateTime.Now;
CountdownSpan = EndTime - NowTime;
if (CountdownSpan.TotalSeconds > 0)
{
lblTimerDays.Text = CountdownSpan.Days.ToString();
lblTimerHours.Text = CountdownSpan.Hours > 10 ? CountdownSpan.Hours.ToString() : "0" + CountdownSpan.Hours.ToString();
lblTimerMinutes.Text = CountdownSpan.Minutes > 10 ? CountdownSpan.Minutes.ToString() : "0" + CountdownSpan.Minutes.ToString();
lblTimerSeconds.Text = CountdownSpan.Seconds > 10 ? CountdownSpan.Seconds.ToString() : "0" + CountdownSpan.Seconds.ToString();
}
} }
protected void Timer1_Tick1(object sender, EventArgs e)
{
string time = this.TextBox1.Text;
DateTime EndTime = Convert.ToDateTime(time);//结束时间
TimeSpan CountdownSpan;//时间间隔 DateTime NowTime = DateTime.Now;
CountdownSpan = EndTime - NowTime;
if (CountdownSpan.TotalSeconds > 0)
{
lblTimerDays.Text = CountdownSpan.Days.ToString();
lblTimerHours.Text = CountdownSpan.Hours > 10 ? CountdownSpan.Hours.ToString() : "0" + CountdownSpan.Hours.ToString();
lblTimerMinutes.Text = CountdownSpan.Minutes > 10 ? CountdownSpan.Minutes.ToString() : "0" + CountdownSpan.Minutes.ToString();
lblTimerSeconds.Text = CountdownSpan.Seconds > 10 ? CountdownSpan.Seconds.ToString() : "0" + CountdownSpan.Seconds.ToString();
}
//我在这里判断的,怎么不行???
//else
//{
// //我就写这么一小句,时间到的时候,button的enable变成灰色
// this.Button1.Enabled = false;
//}
}时间到了,就把按钮变成灰色!我else这样写不对!在load中加也不行!怎样才行??
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>倒计时</title></head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<div >
距离
<asp:TextBox ID="TextBox1" runat="server" Text="2011-03-25 16:20:59"></asp:TextBox>
<br /><asp:Button ID="Button1" runat="server" Text="确认" Enabled="true"
Height="33px" Width="123px"/><br />还有
<asp:UpdatePanel ID="UpdatePanelCountdown" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Label ID="lblTimerDays" runat="server" Text="0" ForeColor="Red" />天
<asp:Label ID="lblTimerHours" runat="server" Text="0" ForeColor="Red" />时
<asp:Label ID="lblTimerMinutes" runat="server" Text="0" ForeColor="Red" />分
<asp:Label ID="lblTimerSeconds" runat="server" Text="0" ForeColor="Red" />秒
<asp:Timer ID="Timer1" runat="server" Interval="1000" OnTick="Timer1_Tick1" />
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>后台代码!
protected void Page_Load(object sender, EventArgs e)
{
string time = this.TextBox1.Text;
DateTime EndTime = Convert.ToDateTime(time);//结束时间
TimeSpan CountdownSpan;//时间间隔 if (!IsPostBack)
{
DateTime NowTime = DateTime.Now;
CountdownSpan = EndTime - NowTime;
if (CountdownSpan.TotalSeconds > 0)
{
lblTimerDays.Text = CountdownSpan.Days.ToString();
lblTimerHours.Text = CountdownSpan.Hours > 10 ? CountdownSpan.Hours.ToString() : "0" + CountdownSpan.Hours.ToString();
lblTimerMinutes.Text = CountdownSpan.Minutes > 10 ? CountdownSpan.Minutes.ToString() : "0" + CountdownSpan.Minutes.ToString();
lblTimerSeconds.Text = CountdownSpan.Seconds > 10 ? CountdownSpan.Seconds.ToString() : "0" + CountdownSpan.Seconds.ToString();
}
} }
protected void Timer1_Tick1(object sender, EventArgs e)
{
string time = this.TextBox1.Text;
DateTime EndTime = Convert.ToDateTime(time);//结束时间
TimeSpan CountdownSpan;//时间间隔 DateTime NowTime = DateTime.Now;
CountdownSpan = EndTime - NowTime;
if (CountdownSpan.TotalSeconds > 0)
{
lblTimerDays.Text = CountdownSpan.Days.ToString();
lblTimerHours.Text = CountdownSpan.Hours > 10 ? CountdownSpan.Hours.ToString() : "0" + CountdownSpan.Hours.ToString();
lblTimerMinutes.Text = CountdownSpan.Minutes > 10 ? CountdownSpan.Minutes.ToString() : "0" + CountdownSpan.Minutes.ToString();
lblTimerSeconds.Text = CountdownSpan.Seconds > 10 ? CountdownSpan.Seconds.ToString() : "0" + CountdownSpan.Seconds.ToString();
}
//我在这里判断的,怎么不行???
//else
//{
// //我就写这么一小句,时间到的时候,button的enable变成灰色
// this.Button1.Enabled = false;
//}
}时间到了,就把按钮变成灰色!我else这样写不对!在load中加也不行!怎样才行??
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<head id="Head1" runat="server">
<title>倒计时</title></head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<div >
距离
<asp:TextBox ID="TextBox1" runat="server" Text="2011-03-25 17:04:40"></asp:TextBox>
<asp:UpdatePanel ID="UpdatePanelCountdown" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Button ID="Button1" runat="server" Text="确认" Enabled="true"
Height="33px" Width="123px"/>还有 <br /><br />
<asp:Label ID="lblTimerDays" runat="server" Text="0" ForeColor="Red" />天
<asp:Label ID="lblTimerHours" runat="server" Text="0" ForeColor="Red" />时
<asp:Label ID="lblTimerMinutes" runat="server" Text="0" ForeColor="Red" />分
<asp:Label ID="lblTimerSeconds" runat="server" Text="0" ForeColor="Red" />秒
<asp:Timer ID="Timer1" runat="server" Interval="1000" OnTick="Timer1_Tick1" />
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>
需要将确定按钮放入UpdatePanel
第一:时间是自己设定的第二:时间到了,按钮失效!像这样的!在网上找了许多,不知道怎么设置时间到了,就让按钮失效,谢谢!