#region Connecting CounterpartyDetails Listview Webparts
                try
                {

                    mgr = web.GetLimitedWebPartManager("SitePages/CounterpartyDetails.aspx", PersonalizationScope.Shared);

                    if (mgr != null)
                    {
                        System.Web.UI.WebControls.WebParts.WebPart providerCounterpartyDetails = mgr.WebParts["CounterpartyDetails_QueryString"];
                        System.Web.UI.WebControls.WebParts.WebPart providerCounterpartyDetails1 = mgr.WebParts["CounterpartyContracts_QueryString"];


                        System.Web.UI.WebControls.WebParts.WebPart consumerCounterpartyDocuments = mgr.WebParts["CounterpartyDetails_CounterpartyDocuments"];
                        ConsumerConnectionPointCollection ccc = mgr.GetConsumerConnectionPoints(consumerCounterpartyDocuments);
                        ProviderConnectionPointCollection ppp = mgr.GetProviderConnectionPoints(providerCounterpartyDetails);
                        TransformableFilterValuesToParametersTransformer filterToParameterTransformer = constructTransformableFilterValuesToParametersTransformer("CounterpartyID", "QueryString");
                        SPWebPartConnection conn = mgr.SPConnectWebParts(providerCounterpartyDetails, ppp["ITransformableFilterValues"], consumerCounterpartyDocuments, ccc["DFWP Filter Consumer ID"], filterToParameterTransformer);
                        mgr.SPWebPartConnections.Add(conn);

                        conn = new SPWebPartConnection();
                        TransformableFilterValuesToParametersTransformer filterToParameterTransformerDetails = constructTransformableFilterValuesToParametersTransformer("ContractingParty2", "QueryString");
                        System.Web.UI.WebControls.WebParts.WebPart consumerContracts = mgr.WebParts["CounterpartyDetails_Contracts"];
                        ConsumerConnectionPointCollection cccContracts = mgr.GetConsumerConnectionPoints(consumerContracts);
                        conn = mgr.SPConnectWebParts(providerCounterpartyDetails1, ppp["ITransformableFilterValues"], consumerContracts, cccContracts["DFWP Filter Consumer ID"], filterToParameterTransformerDetails);
                        mgr.SPWebPartConnections.Add(conn);

                        conn = new SPWebPartConnection();
                        TransformableFilterValuesToParametersTransformer filterToParameterTransformerAmend = constructTransformableFilterValuesToParametersTransformer("CounterpartyID", "QueryString");
                        System.Web.UI.WebControls.WebParts.WebPart consumerContacts = mgr.WebParts["CounterpartyDetails_CounterpartyContacts"];
                        ConsumerConnectionPointCollection cccContacts = mgr.GetConsumerConnectionPoints(consumerContacts);
                        conn = mgr.SPConnectWebParts(providerCounterpartyDetails, ppp["ITransformableFilterValues"], consumerContacts, cccContacts["DFWP Filter Consumer ID"], filterToParameterTransformerAmend);
                        mgr.SPWebPartConnections.Add(conn);

                        //conn = new SPWebPartConnection();
                        //TransformableFilterValuesToParametersTransformer filterToParameterTransformerAdd = constructTransformableFilterValuesToParametersTransformer("ID", "QueryString");
                        //  System.Web.UI.WebControls.WebParts.WebPart consumerCounterparty = mgr.WebParts["CounterpartyDetails_BusinessDirectory"];
                        //ConsumerConnectionPointCollection cccCounterparty = mgr.GetConsumerConnectionPoints(consumerCounterparty);
                        //conn = mgr.SPConnectWebParts(providerCounterpartyDetails, ppp["ITransformableFilterValues"], consumerCounterparty, cccCounterparty["DFWP Filter Consumer ID"], filterToParameterTransformerAdd);
                        //mgr.SPWebPartConnections.Add(conn);

                        conn = new SPWebPartConnection();
                        TransformableFilterValuesToParametersTransformer filterToParameterTransformerAddFeedback = constructTransformableFilterValuesToParametersTransformer("CounterpartyID", "QueryString");
                        System.Web.UI.WebControls.WebParts.WebPart consumerfeedback = mgr.WebParts["CounterpartyDetails_ReviewandFeedback"];
                        ConsumerConnectionPointCollection cccfeedback = mgr.GetConsumerConnectionPoints(consumerfeedback);
                        conn = mgr.SPConnectWebParts(providerCounterpartyDetails, ppp["ITransformableFilterValues"], consumerfeedback, cccfeedback["DFWP Filter Consumer ID"], filterToParameterTransformerAddFeedback);
                        mgr.SPWebPartConnections.Add(conn);
                    }
                    else
                    {
                        IServiceLocator serviceLocator = SharePointServiceLocator.GetCurrent();
                        ILogger logger = serviceLocator.GetInstance<ILogger>();
                        logger.TraceToDeveloper("BuildConnection::FeatureActivated::CounterpartyDetails.aspx" + web.Url + "_Webpart Not Found", Error_Code.GENERAL_1007, TraceSeverity.High,
                         string.Format("{0}/{1}", Error_Area_Category.AREA_COREVO, Error_Area_Category.CATEGORY_GENERAL));
                    }

                }

enter code here  <AllUsersWebPart WebPartZoneID="Center" WebPartOrder="6" ID="CounterpartyContracts_QueryString">
      <![CDATA[
    <webParts>
      <webPart xmlns="http://schemas.microsoft.com/WebPart/v3">
        <metaData>
          <type name="Microsoft.SharePoint.Portal.WebControls.QueryStringFilterWebPart, Microsoft.Office.Server.FilterControls,Version=15.0.0.0,Culture=neutral, PublicKeyToken=71e9bce111e9429c" />
          <importErrorMessage>Cannot import this web part.</importErrorMessage>
        </metaData>
        <data>
        <properties>
              <property name="FilterName" type="string">QueryString</property>
              <property name="SendEmptyWhenNoValues" type="bool">False</property>
              <property name="HelpUrl" type="string" />
              <property name="AllowClose" type="bool">True</property>
              <property name="ExportMode" type="exportmode">All</property>
              <property name="AllowMinimize" type="bool">True</property>
              <property name="DefaultValue" type="string">1</property>
              <property name="AllowEdit" type="bool">True</property>
              <property name="Direction" type="direction">NotSet</property>
              <property name="TitleIconImageUrl" type="string">/_layouts/15/images/wp_Filter.gif</property>
              <property name="AllowConnect" type="bool">True</property>
              <property name="MissingAssembly" type="string">Cannot import this web part.</property>
              <property name="AllowHide" type="bool">True</property>
              <property name="Description" type="string">Filters the contents of Web Parts using values passed via the query string.</property>
              <property name="Hidden" type="bool">False</property>
              <property name="CatalogIconImageUrl" type="string">/_layouts/15/images/wp_Filter.gif</property>
              <property name="MultipleValueHandling" type="Microsoft.SharePoint.Portal.WebControls.FilterMultipleValueHandling, Microsoft.Office.Server.FilterControls, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c">SendFirst</property>
              <property name="HelpMode" type="helpmode">Modeless</property>
              <property name="ValueSeparator" type="string" />
              <property name="Height" type="string" />
              <property name="QueryStringParameterName" type="string">Title</property>
              <property name="ChromeType" type="chrometype">None</property>
              <property name="Width" type="string" />
              <property name="Title" type="string">Query String (URL) Filter</property>
              <property name="ChromeState" type="chromestate">Normal</property>
              <property name="TitleUrl" type="string" />
             </properties>
        </data>
      </webPart>
    </webParts>]]>
    </AllUsersWebPart>