如何在ontick事件中启用代码背后的代码？

Question

.aspx页面中

<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"></asp:ToolkitScriptManager> 

    <br /> 
    <asp:UpdatePanel ID="UpdatePanel1" runat="server"> 
    <ContentTemplate> 
    <asp:Timer ID="Timer1" runat="server" Interval="1000" OnTick="Timer1_Tick" > 
    </asp:Timer> 
    <br /> 
    <br /> 
    <table style="position: absolute; top: 600px; left: 167px; width: 1010px; height: 124px;"> 
    <tr> 
    <td><asp:Label ID="Label13" runat="server"></asp:Label></td> 
     <td >DAYS</td> 
    <td><asp:Label ID="Label14" runat="server"></asp:Label></div></td> 
     <td > HOURS</td> 
    <td><asp:Label ID="Label15" runat="server"></asp:Label></td> 
     <td >MIN</td> 
    <td><asp:Label ID="Label16" runat="server"></asp:Label></td> 
     <td > SEC</td> 
    <td><asp:Label ID="Label17" Text="=Remaining For Vote Day" runat="server" ></asp:Label></td> 
    </tr> 
    </table> 

     </ContentTemplate> 
    </asp:UpdatePanel> 
    </div> 

    <div id="theDiv1" runat="server" style="height: 182px;display:none"> 
     <table align="center" class="auto-style1" style="border-style: dashed; border-color: #008000; height: 179px; width: 366px; margin-left: 300px;"> 
       <tr> 
        <td class="auto-style2">&nbsp;</td> 
        <td> 
         <asp:Label ID="Label1" runat="server" Font-Bold="true" Font-Size="X-Large" Text="Voter login"></asp:Label> 
        </td> 
       </tr> 
       <tr> 
        <td class="auto-style2"> 
         <asp:Label ID="Label2" runat="server" Text="Name"> </asp:Label> 
        </td> 
        <td> 
         <asp:TextBox ID="TextBox1" runat="server" Width="177px"></asp:TextBox> 
        </td> 
       </tr> 
       <tr> 
        <td class="auto-style2"> 
         <asp:Label ID="Label3" runat="server" Text="Password"></asp:Label> 
        </td> 
        <td> 
         <asp:TextBox ID="TextBox2" runat="server" TextMode="Password" Width="179px"></asp:TextBox> 
        </td> 
       </tr> 
       <tr> 
        <td class="auto-style2">&nbsp;</td> 
        <td> 
         <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Log in" Width="65px" /> 
         <asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">New User</asp:LinkButton> 
        </td> 
       </tr> 
       <tr> 
        <td class="auto-style2">&nbsp;</td> 
        <td> 
         <asp:LinkButton ID="LinkButton2" runat="server" OnClick="LinkButton2_Click">Forgot Password</asp:LinkButton> 
        </td> 
       </tr> 
     </table> 
     <asp:Label ID="label4" runat="server"></asp:Label> 
    </div> 

</Content> 

.aspx.cs

protected void Timer1_Tick(object sender, EventArgs e) 
    { 

     DateTime dt = DateTime.Now; 
     TimeSpan differ; 
     System.DateTime date1 = new System.DateTime(2015, 4, 1, 20, 10, 0); 
     differ = date1.Subtract(dt); 
     double t = differ.TotalSeconds; 

     if (t > 0) 
     { 
      double dy, h, m, s; 
      dy = differ.Days; 
      h = differ.Hours; 
      m = differ.Minutes; 
      s = differ.Seconds; 
      Label13.Text = dy.ToString();// +" Days " + h + " Hours " + m + " Minutes " + s + " Seconds left for celebration"; 
      Label14.Text = h.ToString(); 
      Label15.Text = m.ToString(); 
      Label16.Text = s.ToString(); 
     } 
     else 
     { 
      Timer1.Enabled = false; 

      time_enable.Visible = false; 

      theDiv1.Visible = true; 

     } 
    } 

页写theDiv1.Visible = true;这种说法theDiv1是不可见的，不工作后。

我该如何解决？

Answer 1

你已经设置display=none风格的财产和Visible=true在服务器端没有意义！所以你需要做如下

theDiv1.Style.Remove("display");//To be on safer side do this first 
theDiv1.Style.Add("display","block"); 

或

theDiv1.Style.Add(HtmlTextWriterStyle.Display, "block"); 

替代

如果你做出改变你div如下

<div id="theDiv1" Visible="false" runat="server" style="height: 182px;"> 

那么任何代码你写的会肯定有效。