updatepanel，timer和trigger中的问题 [英] problem in updatepanel , timer and trigger

问题描述

我的问题，两个更新窗格，其中一个有计时器，第二个有下拉列表和其他控件当我从下拉列表中选择时，它会影响计时器！然后关闭..

如何停止下拉效果？



我的代码？

my problem ,, two update pane and one of them had timer , the second had dropdown list and other controls when i choose from dropdownlist , it affect with timer !! and drop down close ..
how to stop effect of dropdown ??

my code ?

<h2>
    Welcome to ASP.NET!
</h2>
<p>
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
</p>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" ChildrenAsTriggers="false" UpdateMode="Conditional">
    <ContentTemplate>
        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
    </ContentTemplate>
    <Triggers>
        <asp:AsyncPostBackTrigger ControlID="Timer1" />
    </Triggers>
</asp:UpdatePanel>
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
    <ContentTemplate>
        <asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>
        <br />
        <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True"

            onselectedindexchanged="DropDownList1_SelectedIndexChanged">
            <asp:ListItem Value="0">jerusalem Capital</asp:ListItem>
            <asp:ListItem Value="1">Haifa</asp:ListItem>
            <asp:ListItem Value="2">Jaffa</asp:ListItem>
            <asp:ListItem Value="3">Gaza</asp:ListItem>
        </asp:DropDownList>
    </ContentTemplate>
</asp:UpdatePanel>
<asp:Timer ID="Timer1" runat="server" Interval="2000" ontick="Timer1_Tick">
</asp:Timer>

推荐答案

默认updatemode始终用于第二个updatepanel，因此UpdatePanel控件的内容在源自页面上任何位置的每个回发更新。相应地更改第二个面板的updatemode属性..看看http://msdn.microsoft.com/en-CA/library/system.web.ui.updatepanel.updatemode.aspx [ ^ ]

Default updatemode is always for second updatepanel and as a result UpdatePanel control''s content is updated on every postback that originates from anywhere on the page.Change the updatemode property of second panel accordingly..have a look at http://msdn.microsoft.com/en-CA/library/system.web.ui.updatepanel.updatemode.aspx[^]

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