ASP.NET Tutorial/Ajax/Timer
Refreshing the control content using Timer control.
<source lang="csharp">
<%@ Page Language="C#" %> <%@ Import Namespace="System.Collections.Generic" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
List<string> quotes = new List<string>();
quotes.Add("A");
quotes.Add("B");
quotes.Add("C");
Random rnd = new Random();
lblQuote.Text = quotes[rnd.Next(quotes.Count)];
}
</script> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server">
<title>Timer Quote</title>
</head> <body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:Timer ID="Timer1" Interval="2000" runat="server" />
Page Time: <%= DateTime.Now.ToString("T") %>
<fieldset>
<legend>Quote</legend>
<asp:UpdatePanel ID="up1" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
<ContentTemplate>
<asp:Label ID="lblQuote" runat="server" />
</ContentTemplate>
</asp:UpdatePanel>
</fieldset>
</form>
</body> </html></source>
Using the Timer Control
<source lang="csharp">
<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server">
<title>Timer Page</title>
</head> <body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:Timer ID="Timer1" Interval="2000" runat="server" />
The time is <%= DateTime.Now.ToString("T") %>
</form>
</body> </html></source>
