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Webpart in a reusable user control
In my previous post I wrote about using IgnoreIfAlreadyExists=“True” for preventing of adding webparts multiple times. It works fine until you redeploy your project. Another approach is to use a user control with you webpart. Add mapped folder CONTROLTEMPLATES. Create a new user control, add you assembly and your webpart. Then you can add this user control wherever you need it.
<%@ Register
tagprefix="SPSWC"
Namespace="Microsoft.SharePoint.Portal.WebControls"
Assembly="Microsoft.SharePoint.Portal, Version=14.0.0.0,
Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<SPSWC:SocialCommentWebPart runat="server"
AllowEdit="True"
AllowConnect="True"
ConnectionID="00000000-0000-0000-0000-000000000000"
Title="Note Board"
IsIncluded="True"
Dir="Default"
PartImageLarge=""
IsVisible="True"
AllowMinimize="True"
ZoneID=""
ID="g\_5937b022\_83bb\_40cb\_b68f\_bd565bf96885"
FrameState="Normal"
ExportMode="All"
TitleLocIdNum="0"
AllowHide="True"
SuppressWebPartChrome="False"
DetailLink=""
ChromeType="None"
DescriptionLocId="Null"
TitleLocId="Null"
MissingAssembly="Cannot import this Web Part."
PartImageSmall=""
AllowRemove="True"
HelpMode="Modeless"
FrameType="None"
AllowZoneChange="True"
PartOrder="1"
Description="Enable users to leave short, publicly-viewable notes about this page."
HelpLink=""
DescriptionLocIdNum="0"
ExportControlledProperties="True"
IsIncludedFilter=""
\_\_MarkupType="vsattributemarkup"
\_\_WebPartId="{5937b022-83bb-40cb-b68f-bd565bf96885}"
WebPart="true"
Height=""
Width="">
</SPSWC:SocialCommentWebPart>
```Then add your user control into page layout like this:
<%@ Register Tagprefix=“CONTOSO” TagName=“SocialComment” Src="~/_CONTROLTEMPLATES/CONTOSO/SocialCommentUserControl.ascx" %> <CONTOSO:SocialComment id=“SocialComment” runat=“server” />