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Summarizing Group Data (Newbie question!)

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IIJ Tech Support asked on 10 Jun 2010, 03:46 PM
I'm just learning Telerik and am fairly new with C# and VS as well, so my apologizes for how simple a question this must be.

I have two tables: Order_Header and Order_Details.  Every order has a single entry in Order_Header and multiple entries in Order_Details (one for each product purchased).  

Order_Header: [OrderID], [OrderDate], [OrderNumber], [Taxes], [ShippingCost], [OrderTotal], [GST], [PST], [HST]
Order_Details: [DetailID], [OrderID] (ref Order_header), [ProductID], [Quantity], [SellingPrice]

My report is grouped by [Order_Header].[OrderNumber] (unique to each individual order).  
The Group Header shows [Order_Header].[OrderNumber], [Order_Header].[ShippingCost], .[GST], .[PST], .[HST]
The report details shows [Order_Details].[ProductID], [Order_Details].[Quantity], [Order_Details].[SellingPrice]
Ideally the report footer will summarize Quantity, Selling Price, ShippingCost, GST, PST, HST

My challenge is this: If i do SUM(ShippingCost) in the report footer, it sums it once per every item in Order_Details, rather than once per Order_Header.  Is there a solution to this?  Sum by group or somesuch?  I'm also not above accumulating a variable in the codebehind if someone is kind enough to explain how.

Thanks!

P.S. Windows 7, Visual Studio 2008, Telerik Reporting Q1 2010, and Chrome/Firefox/Opera/Safari/IE for browser

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Peter
Telerik team
answered on 15 Jun 2010, 05:03 PM
Hello IIJ Tech Support,

As explained in the Understanding Report Sections help article - the Report Footer section is used to print report totals or other summary information for the entire report. To achieve the desired effect you have use the SUM(ShippingCost)  in a Group Footer section, this way the Sum will aggregate the ShippingCost only for the group.

Sincerely yours,
Peter
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