Two components with the same id ‘{0}’ can’t be added to the application : The Official Microsoft ASP.NET Forums

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Chris Porter

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8 Points

6 Posts

Re: Two components with the same id ‘{0}’ can’t be added to the application

Jan 24, 2007 04:11 PM|LINK

SimonCal
Can you post your sample code first for us to look at to start delving deeper?

I am using the Ajax Ext, CTP and AjaxControlToolkit released 1/23/2007. I was able to fix the problem using the corrected code here: http://forums.asp.net/thread/1546666.aspx. Hopefully this source code will help you resolve the issue.

main.master

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="main.master.cs" Inherits="main" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
        </asp:contentplaceholder>
    </div>
    </form>
</body>
</html>

default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" MasterPageFile="~/main.master" %>

<asp:Content ID="content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
    <ajax:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true" />
    <ajax:UpdatePanel ID="up1" runat="server">
        <ContentTemplate>
            <div>
                <table>
                    <tr>
                        <td><asp:TextBox ID="txt1a" runat="server"></asp:TextBox></td>
                        <td>
                            <asp:TextBox ID="txt1b" runat="server"></asp:TextBox>
                            <ajax:AutoCompleteExtender ID="ace1" runat="server" TargetControlID="txt1b" ServicePath="ws1.asmx" ServiceMethod="GetList" MinimumPrefixLength="1">
                            </ajax:AutoCompleteExtender>
                        </td>
                        <td><asp:Button ID="btn1" runat="server" OnClick="btn1_Click" Text="Search" /></td>
                    </tr>
                    <tr>
                        <td><asp:TextBox ID="txt2a" runat="server"></asp:TextBox></td>
                        <td>
                            <asp:TextBox ID="txt2b" runat="server"></asp:TextBox>
                            <ajax:AutoCompleteExtender ID="ace2" runat="server" TargetControlID="txt2b" ServicePath="ws1.asmx" ServiceMethod="GetList" MinimumPrefixLength="1">
                            </ajax:AutoCompleteExtender>
                        </td>
                        <td><asp:Button ID="btn2" runat="server" OnClick="btn2_Click" Text="Search" /></td>
                    </tr>
                </table>
            </div>
        </ContentTemplate>
    </ajax:UpdatePanel>
</asp:Content>

Default.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void btn1_Click(object sender, EventArgs e)
    {
        switch (txt1b.Text)
        {
            case "one":
                txt1a.Text = "1";
                break;
            case "two":
                txt1a.Text = "2";
                break;
            case "three":
                txt1a.Text = "3";
                break;
            case "four":
                txt1a.Text = "4";
                break;
            case "five":
                txt1a.Text = "5";
                break;
        }
    }

    protected void btn2_Click(object sender, EventArgs e)
    {
        switch (txt2b.Text)
        {
            case "one":
                txt2a.Text = "1";
                break;
            case "two":
                txt2a.Text = "2";
                break;
            case "three":
                txt2a.Text = "3";
                break;
            case "four":
                txt2a.Text = "4";
                break;
            case "five":
                txt2a.Text = "5";
                break;
        }
    }
}

ws1.asmx

<%@ WebService Language="C#" CodeBehind="~/App_Code/ws1.cs" Class="ws1" %>

ws1.cs

using System;
using System.Web;
using System.Collections;
using System.Collections.Generic;
using System.Web.Services;
using System.Web.Services.Protocols;

/// <summary>
/// Summary description for ws1
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.Web.Script.Services.ScriptService]
public class ws1 : System.Web.Services.WebService 
{
    public ws1 () 
    {
        //Uncomment the following line if using designed components 
        //InitializeComponent(); 
    }

    [WebMethod]
    public string HelloWorld() 
    {
        return "Hello World";
    }

    [WebMethod]
    public string[] GetList()
    {
        List<string> items = new List<string>(5);
        items.Add("one");
        items.Add("two");
        items.Add("three");
        items.Add("four");
        items.Add("five");
        return items.ToArray();
    }
}

web.config

<configuration>
	<configSections>
		<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
			<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
				<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication"/>
				<sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
					<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="Everywhere"/>
					<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication"/>
					<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication"/>
				</sectionGroup>
			</sectionGroup>
		</sectionGroup>
	</configSections>
	<system.web>
		<pages>
			<controls>
				<add tagPrefix="ajax" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
				<add tagPrefix="ajax" namespace="Microsoft.Web.Preview.UI" assembly="Microsoft.Web.Preview"/>
				<add tagPrefix="ajax" namespace="Microsoft.Web.Preview.UI.Controls" assembly="Microsoft.Web.Preview"/>
        <add tagPrefix="ajax" namespace="AjaxControlToolkit" assembly="AjaxControlToolkit"/>
			</controls>
		</pages>
		<!--
          Set compilation debug="true" to insert debugging
          symbols into the compiled page. Because this
          affects performance, set this value to true only
          during development.
    -->
		<compilation debug="true">
			<assemblies>
				<add assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
				<add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
				<add assembly="System.Web.Extensions.Design, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/></assemblies>
			<buildProviders>
				<add extension="*.asbx" type="Microsoft.Web.Preview.Services.BridgeBuildProvider"/>
			</buildProviders>
		</compilation>
		<httpHandlers>
			<remove verb="*" path="*.asmx"/>
			<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
			<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
			<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>
			<add verb="GET,HEAD,POST" path="*.asbx" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>
		</httpHandlers>
		<httpModules>
			<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
		</httpModules>
	</system.web>
	<system.web.extensions>
		<scripting>
			<webServices>
				<!-- Uncomment this line to customize maxJsonLength and add a custom converter -->
				<!--
      <jsonSerialization maxJsonLength="500">
        <converters>
            <add name="DataSetConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataSetConverter, Microsoft.Web.Preview, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
            <add name="DataRowConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataRowConverter, Microsoft.Web.Preview, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
            <add name="DataTableConverter" type="Microsoft.Web.Preview.Script.Serialization.Converters.DataTableConverter, Microsoft.Web.Preview, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
        </converters>
      </jsonSerialization>
      -->
				<!-- Uncomment this line to enable the authentication service. Include requireSSL="true" if appropriate. -->
				<!--
        <authenticationService enabled="true" requireSSL = "true|false"/>
      -->
				<!-- Uncomment these lines to enable the profile service. To allow profile properties to be retrieved
           and modified in ASP.NET AJAX applications, you need to add each property name to the readAccessProperties and
           writeAccessProperties attributes. -->
				<!--
      <profileService enabled="true"
                      readAccessProperties="propertyname1,propertyname2"
                      writeAccessProperties="propertyname1,propertyname2" />
      -->
			</webServices>
			<!-- 
      <scriptResourceHandler enableCompression="true" enableCaching="true" />
      -->
		</scripting>
	</system.web.extensions>
	<system.webServer>
		<validation validateIntegratedModeConfiguration="false"/>
		<modules>
			<add name="ScriptModule" preCondition="integratedMode" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
		</modules>
		<handlers>
			<remove name="WebServiceHandlerFactory-Integrated"/>
			<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
			<add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
			<add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
			<add name="ASBXHandler" verb="GET,HEAD,POST" path="*.asbx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
		</handlers>
	</system.webServer>
</configuration>

Chris Porter

Re: Two components with the same id ‘{0}’ can’t be added to the application

SimonCal

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