Mutliple/Duplicate web parts instances in the custom page layout for Publishing

Question

Hi,

I am facing this issue of Mutliple/Duplicate web parts instances in the pages created from my custom page layout for Publishing . Code is below

<%@ Page language="C#"   Inherits="Microsoft.SharePoint.Publishing.PublishingLayoutPage,Microsoft.SharePoint.Publishing,Version=14.0.0.0,Culture=neutral,PublicKeyToken=71e9bce111e9429c" meta:progid="SharePoint.WebPartPage.Document" %>
<%@ Register Tagprefix="SharePointWebControls" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> 
<%@ Register Tagprefix="WebPartPages" Namespace="Microsoft.SharePoint.WebPartPages" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> 
<%@ Register Tagprefix="PublishingWebControls" Namespace="Microsoft.SharePoint.Publishing.WebControls" Assembly="Microsoft.SharePoint.Publishing, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> 
<%@ Register Tagprefix="PublishingNavigation" Namespace="Microsoft.SharePoint.Publishing.Navigation" Assembly="Microsoft.SharePoint.Publishing, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register tagprefix="WebPart1" Namespace="XXXXXX.YYYY.WebPart1" assembly="XXXXXX.YYYY, Version=1.0.0.0, Culture=neutral, PublicKeyToken=51c18be5544e2378" %>
<%@ Register tagprefix="WebPart2" Namespace="XXXXXX.YYYY.WebPart2" assembly="XXXXXX.YYYY, Version=1.0.0.0, Culture=neutral, PublicKeyToken=51c18be5544e2378" %>
<%@ Register tagprefix="WebPart3" Namespace="XXXXXX.YYYY.Webpart3" assembly="XXXXXX.YYYY, Version=1.0.0.0, Culture=neutral, PublicKeyToken=51c18be5544e2378" %>

<asp:Content ContentPlaceholderID="PlaceHolderPageTitle" runat="server">
	<SharePointWebControls:FieldValue id="PageTitle" FieldName="Title" runat="server"/>
</asp:Content>
<asp:Content ContentPlaceholderID="PlaceHolderMain" runat="server">
<WebPartPages:SPProxyWebPartManager runat="server" id="spproxywebpartmanager"></WebPartPages:SPProxyWebPartManager>
	<div id="stage">
		<div Class="contents">
			<div Class="articles">
			     <WebPartPages:WebPartZone runat="server" ID="topZone">
                     <ZoneTemplate>
                        <WebPart1:WebPart1 runat="server" ID="g_53934471_9a5e_477e_ac25_51c27ce53ba8" Description="My Visual WebPart" ReportSiteUrl=http://ZZZZ.XXXXXX.com/sites/YYYY ChromeType="None" Title="Webpart1" WebPartId="{53934471-9A5E-477E-AC25-51C27CE53BA8}"></WebPart1:WebPart1>
				     </ZoneTemplate>
                 </WebPartPages:WebPartZone>		
			</div>
			<div Class="footers">
				 <WebPartPages:WebPartZone runat="server" ID="BottomZone">
                     <ZoneTemplate>
                      <WebPart2:WebPart2 runat="server" ID="g_e851e4f0_384a_4258_98e4_a319cc15cedd" Description="My WebPart" ChromeType="None" Title="My Webpart" WebPartId="{E851E4F0-384A-4258-98E4-A319CC15CEDD}"></WebPart2:WebPart2>
                      </ZoneTemplate>
                 </WebPartPages:WebPartZone> 
			</div>
		</div>
		 <div Class="aside">
              <WebPartPages:WebPartZone runat="server" ID="RightZone">
                     <ZoneTemplate>
                     <WebPart3:WebPart3 runat="server" Description="My WebPart" Title="My Title" WebPartId="{9eb76590-3c12-4d63-aefb-a559c065a601}" ChromeType="None"  WebPart="true" id="g_9eb76590_3c12_4d63_aefb_a559c065a601"></WebPart3:WebPart3>
                     </ZoneTemplate>
                 </WebPartPages:WebPartZone> 
            <!-- /.aside -->
	</div>
    </div>
</asp:Content>

---

Pallavi Sharma

Answer 1

Hello Pallavi,

Could you please let us know some more details about the problem? How multiple instances creating a problem to your page?

Thanks

---

ajit

Answer 2

When i try to create a page from this layout i get mutliple instances, sometimes duplicates of the webparts. reading more about it foudn that it is due to feature activation http://social.msdn.microsoft.com/Forums/en-US/sharepoint2010general/thread/7b71806e-203c-407e-8e3c-22d3370e4a7f still looking for a way to fix it in framework 3.5. remove duplicate webparts from page layouts / pages using feature reciever.

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Pallavi Sharma

Answer 3

Hi,

Please try the solution in this blog:http://blog.mastykarz.nl/preventing-provisioning-duplicate-web-parts-instances-on-feature-reactivation/

In this article it presents some possible approaches to prevent it and make your Feature provision always only one instance of each Web Part.

---

Xue-mei Chang

TechNet Community Support