ASP.NET Tutorial/Ajax/Refresh
Версия от 18:30, 26 мая 2010; (обсуждение)
Timed refresh
<source lang="csharp">
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="TimedRefresh" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server">
<title>Untitled Page</title>
</head> <body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="True"> </asp:ScriptManager> <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional"> <ContentTemplate>
<asp:Label ID="Label1" runat="server" Font-Bold="True"></asp:Label>
This time refreshes automatically every 1 second (for about 10 seconds).
<asp:Button ID="Button1" runat="server" Text="Refresh Time" />
</ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID="TimerControl1" EventName="Tick" /> </Triggers> </asp:UpdatePanel> <asp:Timer ID="TimerControl1" runat="server" Interval="1000" OnTick="TimerControl1_Tick"> </asp:Timer> </form>
</body> </html> File: Default.aspx.cs using System; using System.Data; using System.Configuration; using System.Collections; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class TimedRefresh : System.Web.UI.Page {
protected void Page_Load(object sender, EventArgs e) { Label1.Text = DateTime.Now.ToLongTimeString(); } protected void TimerControl1_Tick(object sender, EventArgs e) { int tickCount = 0; if (ViewState["TickCount"] != null) { tickCount = (int)ViewState["TickCount"]; } tickCount++; ViewState["TickCount"] = tickCount; if (tickCount > 10) { TimerControl1.Enabled = false; } }}</source>