控件ID找不到的AsyncPostBackTrigger [英] ControlID could not be found for AsyncPostBackTrigger

问题描述

 ＆LT; ASP：的UpdatePanel ID =CartUpdatePanel=服务器＆GT;
        ＆LT;＆触发器GT;
            ＆LT; ASP：AsyncPostBackTrigger控件ID ='＆LT;％= rdoSelect.ClientID％GT;/＆GT;
        ＆LT; /触发器＆GT;
        ＆LT;＆的ContentTemplate GT;
            ＆LT; ASP：定时器ID =cartTimer间隔=5000=服务器OnTick =cartTimer_Tick＆GT;
            ＆LT; / ASP：定时器＆GT;
            ＆LT; ASP：GridView控件ID =gridCartSearch=服务器的AutoGenerateColumns =FALSE＆GT;
                ＆LT;柱体和GT;
                    ＆LT; ASP：的TemplateField的HeaderText =选择＆GT;
                        ＆LT;＆ItemTemplate中GT;                            ＆LT; ASP：HiddenField ID =串行=服务器值='＆LT;％＃的eval（SERIALNUM）％＆GT;' /＆GT;
                            ＆LT; ASP：单选按钮ID =rdoSelect=服务器的AutoPostBack =真正的组名=radioBtns
                                OnCheckedChanged =rdoSelect_CheckedChanged/＆GT;
                        ＆LT; / ItemTemplate中＆GT;
                    ＆LT; / ASP：的TemplateField＆GT;                ＆LT; /专栏＆GT;
            ＆LT; / ASP：GridView的＆GT;
        ＆LT; /＆的ContentTemplate GT;
    ＆LT; / ASP：的UpdatePanel＆GT;
 

我收到以下错误

  

ID为474上的控制;（％）=
  rdoSelect.ClientID％>'不能
  发现在UpdatePanel的触发器
  CartUpdatePanel。

解决方案

我试过＆LT; ASP：AsyncPostBackTrigger控件ID ='rdoSelect/＆GT; ，但它不工作。

我在这里找到一个解决方案控制ID为ImageButton5无法找到。

该AsyncPostBack应该只要创建一个行注册。

 保护无效gridCartSearch_RowCreated（对象发件人，GridViewRowEventArgs E）
        {
            控制radioControl = e.Row.Cells [0] .FindControl（rdoSelect）;
            如果（radioControl！= NULL）
            {
                cartScriptMgr.RegisterAsyncPostBackControl（radioControl）;
            }        }
 

更新更新面板在rdoSelect_CheckedChanged

 保护无效rdoSelect_CheckedChanged（对象发件人，EventArgs的发送）
        {
            ....
            CartUpdatePanel.Update（）;        }
 

使用＆LT; ASP：AsyncPostBackTrigger控件ID ='rdoSelect/＆GT;

感谢所有

  <asp:UpdatePanel ID="CartUpdatePanel" runat="server">
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID='<%= rdoSelect.ClientID %>'/>
        </Triggers>
        <ContentTemplate>
            <asp:Timer ID="cartTimer" Interval="5000" runat="server" OnTick="cartTimer_Tick">
            </asp:Timer>
            <asp:GridView ID="gridCartSearch" runat="server" AutoGenerateColumns="False">
                <Columns>
                    <asp:TemplateField HeaderText="Select">
                        <ItemTemplate>

                            <asp:HiddenField ID="Serial" runat="server" Value='<%# Eval("serialnum") %>' />
                            <asp:RadioButton ID="rdoSelect" runat="server" AutoPostBack="true" GroupName="radioBtns"
                                OnCheckedChanged="rdoSelect_CheckedChanged" />
                        </ItemTemplate>
                    </asp:TemplateField>

                </Columns>
            </asp:GridView>
        </ContentTemplate>
    </asp:UpdatePanel>

I'm getting the following error

A control with ID '<%= rdoSelect.ClientID %>' could not be found for the trigger in UpdatePanel 'CartUpdatePanel'.

解决方案

I tried <asp:AsyncPostBackTrigger ControlID='rdoSelect'/> but it’s not working.

I found a solution here A control with ID 'ImageButton5' could not be found for.

The AsyncPostBack should be registered whenever a row is created.

protected void gridCartSearch_RowCreated(object sender, GridViewRowEventArgs e)
        {
            Control radioControl = e.Row.Cells[0].FindControl("rdoSelect");
            if (radioControl != null)
            {
                cartScriptMgr.RegisterAsyncPostBackControl(radioControl);
            }

        }

Update the Update Panel On rdoSelect_CheckedChanged

  protected void rdoSelect_CheckedChanged(object sender, EventArgs e)
        {
            ....
            CartUpdatePanel.Update();

        }

using <asp:AsyncPostBackTrigger ControlID='rdoSelect'/>

Thanks All

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