在ASP.NET中使用计时器控件

本文介绍了在ASP.NET中使用计时器控件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

--------------------------USE OF TIMER CONTROL IN ASP.NET(VB)--------------------------------------------------- <table runat ="server" style="width: 818px" > <tr> <td> &nbsp;</td> <td> <asp:ScriptManager ID="ScriptManager1" runat="server" /> <div> <asp:Timer ID="Timer1" OnTick="Timer1_Tick" runat="server" Interval="1000"> </asp:Timer> </div> <asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server"> <Triggers> <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" /> </Triggers> <ContentTemplate> <asp:Label ID="Label1" runat="server" Text="UpdatePanel1 not refreshed yet."></asp:Label> </ContentTemplate> </asp:UpdatePanel> <asp:UpdatePanel ID="UpdatePanel2" UpdateMode="Conditional" runat="server"> <Triggers> <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" /> </Triggers> <ContentTemplate> <asp:Label ID="Label2" runat="server" Text="UpdatePanel2 not refreshed yet."></asp:Label> </ContentTemplate> </asp:UpdatePanel> </td> <td> &nbsp;</td> <td> &nbsp;</td> <td> &nbsp;</td> </tr> </table>

Protected Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick Label1.Text = "UpdatePanel1 refreshed at: " & _ DateTime.Now.ToLongTimeString() 'Label2.Text = "UpdatePanel2 refreshed at: " & _ ' DateTime.Now.ToLongTimeString() Dim tickCount As Integer = 0 If ViewState("TickCount") IsNot Nothing Then tickCount = CType(ViewState("TickCount"), Integer) End If tickCount += 1 ViewState("TickCount") = tickCount ' Decide whether to disable the timer. If tickCount > 120 Then Label1.Text = "Time is Over!!!!!!!" Timer1.Enabled = False End If End Sub

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