控制事件不是从内部的UpdatePanel射击 [英] Control event not firing from within updatepanel

问题描述

我有一个正在通过一个定时器更新，如预期的UpdatePanel内工作。一个列表框

不过，我不能让SelectedIndexChanged事件射击。我presume这是值得做的部分回发。有谁知道我能做些什么，使这项工作？

当我将它移出的UpdatePanel的正常工作。但是很明显，我不能做部分回发。

 ＆LT; ASP：的UpdatePanel ID =的UpdatePanel=服务器的UpdateMode =条件＆GT;
＆LT;＆的ContentTemplate GT;
    ＆LT; ASP：定时器ID =定时器=服务器OnTick =Timer1_Tick间隔=500＆GT;＆LT; / ASP：定时器＆GT;
    ＆LT; ASP：列表框ID =ListBox_JobPositionsOnSelectedIndexChanged =ListBox_JobPositions_SelectedIndexChanged=服务器HEIGHT =750pxWIDTH =300像素的DataSourceID =SqlDataSource的DataTextField =公司DataValueField =PID＆GT;＆LT; / ASP：列表框＆GT;
＆LT; /＆的ContentTemplate GT;
＆LT; / ASP：的UpdatePanel＆GT;
 

更新：

现在试过下面的变化，计时器事件仍在工作，但SelectedIndexChanged事件是没有的。我迷路与此有关。

 ＆LT; ASP：的UpdatePanel ID =的UpdatePanel=服务器ChildrenAsTriggers =FALSE的UpdateMode =条件＆GT;
＆LT;＆的ContentTemplate GT;
    ＆LT; ASP：定时器ID =定时器=服务器OnTick =Timer1_Tick间隔=500＆GT;＆LT; / ASP：定时器＆GT;
    ＆LT; ASP：列表框ID =ListBox_JobPositions=服务器HEIGHT =750pxWIDTH =300像素的DataSourceID =SqlDataSource的DataTextField =公司DataValueField =PIDOnSelectedIndexChanged =ListBox_JobPositions_SelectedIndexChanged的AutoPostBack =真 ＆GT;＆LT; / ASP：列表框＆GT;
＆LT; /＆的ContentTemplate GT;
＆LT;＆触发器GT;
    ＆LT; ASP：AsyncPostBackTrigger控件ID =定时器/＆GT;
＆LT; /触发器＆GT;
 

下面是当列表框是UpdatePanel内，但确实工作的时候它不是不火的事件。

 保护无效ListBox_JobPositions_SelectedIndexChanged（对象发件人，EventArgs的发送）
    {
        的Response.Write（测试）;
    }
 

解决方案

现在的工作，必须手工指定异步和完全回发触发器。感谢您的帮助。

 ＆LT; ASP：的UpdatePanel ID =的UpdatePanel=服务器ChildrenAsTriggers =FALSE的UpdateMode =条件＆GT;
＆LT;＆的ContentTemplate GT;
    ＆LT; ASP：定时器ID =定时器=服务器OnTick =Timer1_Tick间隔=500＆GT;＆LT; / ASP：定时器＆GT;
    ＆LT; ASP：列表框ID =ListBox_JobPositions=服务器HEIGHT =750pxWIDTH =300像素的DataSourceID =SqlDataSource的DataTextField =公司DataValueField =PIDOnSelectedIndexChanged =ListBox_JobPositions_SelectedIndexChanged的AutoPostBack =真 ＆GT;＆LT; / ASP：列表框＆GT;
＆LT; /＆的ContentTemplate GT;
＆LT;＆触发器GT;
    ＆LT; ASP：AsyncPostBackTrigger控件ID =定时器/＆GT;
    ＆LT; ASP：PostBackTrigger控件ID =ListBox_JobPositions/＆GT;
＆LT; /触发器＆GT;
＆LT; / ASP：的UpdatePanel＆GT;
 

I have a listbox that is being updated via a timer and working as expected inside an UpdatePanel.

However I cannot get the selectedindexchanged event to fire. I presume this is something to do with the partial postback. Does anybody know what I can do to make this work?

When I move it out of the UpdatePanel it works fine. However obviously I cannot do partial postbacks.

<asp:UpdatePanel ID="UpdatePanel" runat="server" UpdateMode="Conditional">
<ContentTemplate>
    <asp:Timer ID="Timer1" runat="server" OnTick="Timer1_Tick" Interval="500"></asp:Timer>
    <asp:ListBox ID="ListBox_JobPositions" OnSelectedIndexChanged="ListBox_JobPositions_SelectedIndexChanged"  runat="server" Height="750px" Width="300px" DataSourceID="sqlDataSource" DataTextField="Company" DataValueField="Pid"></asp:ListBox>
</ContentTemplate>
</asp:UpdatePanel>

UPDATE:

Have now tried the below change, the timer event is still working but the selectedindexchanged event is not. I am getting lost with this.

<asp:UpdatePanel ID="UpdatePanel" runat="server" ChildrenAsTriggers="False" UpdateMode="Conditional">
<ContentTemplate>
    <asp:Timer ID="Timer1" runat="server" OnTick="Timer1_Tick" Interval="500"></asp:Timer>
    <asp:ListBox ID="ListBox_JobPositions" runat="server" Height="750px" Width="300px" DataSourceID="sqlDataSource" DataTextField="Company" DataValueField="Pid" OnSelectedIndexChanged="ListBox_JobPositions_SelectedIndexChanged" AutoPostBack="True"></asp:ListBox>
</ContentTemplate>
<Triggers>
    <asp:AsyncPostBackTrigger ControlID="Timer1" />
</Triggers>

Here is the event that does not fire when the listbox is inside the UpdatePanel but does work when it is not.

protected void ListBox_JobPositions_SelectedIndexChanged(object sender, EventArgs e)
    {
        Response.Write("test");
    }

解决方案

Works now, had to manually specify Async and Full Postback triggers. Thanks for your help.

<asp:UpdatePanel ID="UpdatePanel" runat="server" ChildrenAsTriggers="False" UpdateMode="Conditional">
<ContentTemplate>
    <asp:Timer ID="Timer1" runat="server" OnTick="Timer1_Tick" Interval="500"></asp:Timer>
    <asp:ListBox ID="ListBox_JobPositions" runat="server" Height="750px" Width="300px" DataSourceID="sqlDataSource" DataTextField="Company" DataValueField="Pid" OnSelectedIndexChanged="ListBox_JobPositions_SelectedIndexChanged" AutoPostBack="True"></asp:ListBox>
</ContentTemplate>
<Triggers>
    <asp:AsyncPostBackTrigger ControlID="Timer1" />
    <asp:PostBackTrigger ControlID="ListBox_JobPositions" /> 
</Triggers>
</asp:UpdatePanel>

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