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Possible cause on Calcualted Item null reference?

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PivotGrid
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Tim
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Tim asked on 29 Jul 2014, 12:16 PM
Dear Telerik,

I'm trying to do an Year-On-Year comparison and I thought that creating a calculateditem will be the way of doing it (similar to this demo). However, I get the error of "Object reference not set to an instance of an object" I wonder what might be the potential cause?

Here's an extraction of the code I have and snapshot to show the grid structure.
<telerik:RadPivotGrid ID="RadPivotGrid_DataView" runat="server" Height="100%" AllowSorting="True" OnItemCommand="RadPivotGrid_DataView_ItemCommand" OnCellCreated="RadPivotGrid_DataView_CellCreated" DataSourceID="Sql_Contract_Details" EnableToolTips="True" EnableZoneContextMenu="True" EnableConfigurationPanel="True" OnFieldCreated="RadPivotGrid_DataView_FieldCreated" Skin="Office2010Blue" OnCellDataBound="RadPivotGrid_DataView_CellDataBound" Culture="en-GB" OnItemNeedCalculation="RadPivotGrid_DataView_ItemNeedCalculation" AllowPaging="True" PageSize="30" AggregatesLevel="1">
                                                <FieldsPopupSettings AggregateFieldsMinCount="1" />
                                                <PagerStyle ChangePageSizeButtonToolTip="Change Page Size" PageSizeControlType="RadComboBox" />
                                                <OlapSettings>
                                                    <XmlaConnectionSettings></XmlaConnectionSettings>
                                                </OlapSettings>
                                                <Fields>
                                                    <telerik:PivotGridReportFilterField Caption="Meeting Class" DataField="MeetingClass" UniqueName="MeetingClass" IsHidden="false">
                                                    </telerik:PivotGridReportFilterField>
                                                    <telerik:PivotGridReportFilterField Caption="Event Type" DataField="EventType" UniqueName="EventType" IsHidden="false">
                                                    </telerik:PivotGridReportFilterField>
                                                    <telerik:PivotGridReportFilterField Caption="M&E Cluster" DataField="M_and_E_Cluster" UniqueName="M_and_E_Cluster" IsHidden="false">
                                                    </telerik:PivotGridReportFilterField>
                                                    <telerik:PivotGridReportFilterField Caption="Source Group" DataField="LeadSource" UniqueName="LeadSource" IsHidden="false">
                                                    </telerik:PivotGridReportFilterField>
 
                                                    <telerik:PivotGridColumnField Caption="Creation Year" SortOrder="Descending" DataField="CreatedDate" GroupInterval="Year" UniqueName="CreationDateYear" IsHidden="false">
                                                        <%--THIS CAUSES "Object reference not set to an instance of an object" ERROR
                                                            <CalculatedItems>
                                                                <telerik:PivotGridCalculatedItem GroupName="Forecast for 1999"></telerik:PivotGridCalculatedItem>
                                                            </CalculatedItems>            
                                                        --%>                                       
                                                    </telerik:PivotGridColumnField>
                                                    <telerik:PivotGridRowField Caption="Creation Month" DataField="CreatedDate" GroupInterval="Month" UniqueName="CreationDateMonth" IsHidden="false">
                                                    </telerik:PivotGridRowField>
 
                                                    <telerik:PivotGridColumnField Caption="Arrival Year" SortOrder="Descending" DataField="EventStartDate" GroupInterval="Year" UniqueName="ArrivalYear" IsHidden="true">
                                                    </telerik:PivotGridColumnField>
                                                    <telerik:PivotGridRowField Caption="Arrival Month" DataField="EventStartDate" GroupInterval="Month" UniqueName="ArrivalMonth" IsHidden="true">
                                                    </telerik:PivotGridRowField>
 
                                                    <telerik:PivotGridRowField Caption="Status" DataField="StatusText" UniqueName="StatusText" IsHidden="false" SortOrder="None">
                                                        <CalculatedItems>
                                                            <telerik:PivotGridCalculatedItem GroupName="Total Exc TD"></telerik:PivotGridCalculatedItem>
                                                            <telerik:PivotGridCalculatedItem GroupName="Total"></telerik:PivotGridCalculatedItem>
                                                            <telerik:PivotGridCalculatedItem GroupName="Conversion % Exc TD"></telerik:PivotGridCalculatedItem>
                                                            <telerik:PivotGridCalculatedItem GroupName="Conversion %"></telerik:PivotGridCalculatedItem>
                                                        </CalculatedItems>
                                                    </telerik:PivotGridRowField>
 
                                                    <telerik:PivotGridAggregateField DataField="RecordCount" Aggregate="Count" Caption="Enquiries" IsHidden="false">
                                                    </telerik:PivotGridAggregateField>
                                                    <telerik:PivotGridAggregateField DataField="TotalFunctionRevenue" Aggregate="Sum" Caption="Revenue" IsHidden="false" DataFormatString="{0:C0}">
                                                    </telerik:PivotGridAggregateField>
                                                    <telerik:PivotGridAggregateField DataField="TotalFunctionRevenue" Aggregate="Average" Caption="Average Revenue" IsHidden="false" DataFormatString="{0:C0}">
                                                    </telerik:PivotGridAggregateField>
                                                    <telerik:PivotGridAggregateField DataField="RecordCount" Caption="YOY" IsHidden="false">
                                                        <TotalFormat Axis="Columns" TotalFunction="DifferenceFromPrevious" />
                                                    </telerik:PivotGridAggregateField>
                                                </Fields>
                                                <ClientSettings EnableFieldsDragDrop="True">
                                                    <Scrolling AllowVerticalScroll="True"></Scrolling>
                                                </ClientSettings>
                                                <TotalsSettings RowsSubTotalsPosition="None" RowGrandTotalsPosition="None" ColumnsSubTotalsPosition="None" ColumnGrandTotalsPosition="None"></TotalsSettings>
                                                <ConfigurationPanelSettings EnableOlapTreeViewLoadOnDemand="True" DefaultDeferedLayoutUpdate="True" LayoutType="OneByFour"></ConfigurationPanelSettings>
                                            </telerik:RadPivotGrid>


Many Thanks.

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Angel Petrov
Telerik team
answered on 01 Aug 2014, 07:15 AM
Hi Tim,

Based in the information provided it would be hard to tell what exactly causes the problem. Could you please share with us the code-behind of the page as well so we could examine it?

Additionally I would like to ask you to explain in detail what is the targeted functionality. Maybe we can provide an alternative solution for it.

Regards,
Angel Petrov
Telerik
 

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Tim
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Angel Petrov
Telerik team
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