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VirtualCollection and Best Practices for Paging and Querying
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I am looking for a best practices or sample showing how a user would query for varying collection counts in the ui and adjust the "AnctipatedSize" property of a virtual collection accordingly to reflect proper total pages.

For example, we use EntityQueries in RIA, should the query be executed and returned in total to a viewmodel private collection to get the actual count and adjust the anticipated size (to get a correct page count), then using SkipTake against that private cache for paging?

Thanks

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  • 300
    posted in reply to [Infragistics] Vlad Zagorski

    The DataPage model, assuming it is what was presented here, is a potential solution yet I am wondering what can be done with EntityQueries in WCF RIA.  You have another presentation that I would like to see expanded upon to show how to better deal with the server processing vs silverlight client and paging, while using EntityQueries and VirtualCollections. 

    Now whether the DataPage<T> response model should/could be combined with the RIA methods on the DomainService, and requests to page go to the service on each page.

    Or do what I did and return the complete result set to a ViewModel and have the count done there by setting IncludeTotalCount = true on the initial EntityQuery and just use the VirtualCollection to handle the rendering of the prefectched data to the grid with linq.

    I just would like to know your thoughts, hope I haven't confused matters.

    Regards,

    Adam

     

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