更新用户控件面板无法正常工作 [英] Update panel of User control not working

问题描述

我有一个带有更新面板的用户控件。此更新面板包含国家/地区下拉列表。在选择国家时我必须填写状态下拉列表。

在我的aspx页面中，我已经放置了我的Scripmanager，但是当选择了国家/地区下拉列表时它仍会进行完整的回发。



这是我的主页面设计代码： -



<％@ Master Language =C＃AutoEventWireup =trueCodeFile = MasterPage.master.cs

Inherits =NewOneColumnMaster％>



< asp：ContentPlaceHolder ID =metaHolderrunat = 服务器>





这是我的Aspx设计代码： -

Hi, I have a user control with an update panel.This update panel holds country and state dropdown. on selection of country I have to fill state dropdown.
In my aspx page I have placed my Scripmanager but still it does a full postback when country dropdown is selected.

Here is my Master page design code:-

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs"
Inherits="NewOneColumnMaster" %>

<asp:ContentPlaceHolder ID="metaHolder" runat="server">


Here is my Aspx design code:-

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="MyApplication.aspx.vb" Inherits="MyApplication" MasterPageFile="~/MasterPages/NewOneColumnMaster.master" Title="My Application"  MaintainScrollPositionOnPostback="true" EnableSessionState="True"  %>

<%@ Register src="~/UserControls/MyApplication1.ascx" tagname="Application" tagprefix="uc1" %>
 <%@ MasterType VirtualPath="~/MasterPages/NewOneColumnMaster.master" %>

 
<asp:Content ID="Content1" ContentPlaceHolderID="PrimaryColumn" runat="Server">
    <link href="../css/table.css" rel="stylesheet" type="text/css" />
    <form runat="server" id="form1">
    <asp:scriptmanager id="ScriptManager1" enablepagemethods="true" enablepartialrendering="true"

        runat="server" />
        <div id="pageDiv">             
           <uc1:Applicationid = "ucApplication"  runat="server" /> 
           
 </div>
    </form>
</asp:Content>

这是用户控件设计代码： -

Here is User control desgin code:-

<%@ Control Language="VB" AutoEventWireup="false" CodeFile="MyApplication.ascx.vb" Inherits="MyApplication" Debug="true" %>

<div id="MyMainDiv">
 <asp:UpdatePanel ID="upEduInfo" runat="server">
        <ContentTemplate>
<table>
<tr>
            <td style= "height: 22px;">
               Country: 
           </td>
            <td colspan="5" style="padding-removed2px;">
                <asp:DropDownList ID="drpAltCountry" runat="server" width="300px" 

                    AutoPostBack="True"/>
            </td>
        </tr>   
<tr>
            <td style= "height: 22px;">
               State/Province:
           </td>
            <td colspan="5" style="padding-removed2px;">
                <asp:DropDownList ID="drpAltState" runat="server" width="300px"/>
            </td>
        </tr> 
</table>

</div>

有谁能建议？谢谢

Can anyone suggest ?? Thanks

推荐答案

你没有在 UpdatePanel [ ^ ]应该触发部分回发，因此DDL的AutoPostBack = true将启动整页发布...

使用 ChildrenAsTriggers [ ^ ]属性，或使用触发器 [ ^ ]声明...

You didn't declared when UpdatePanel[^] should trigger a partial post back, so the AutoPostBack=true of the DDL will initiate full page post...
Use ChildrenAsTriggers[^] property of UpdatePanel, or use Triggers[^] declaration...

如果没有必要，请删除更新面板。

Please remove update panel if it is not necessary.

这篇关于更新用户控件面板无法正常工作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！