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POEntity Framework - complex query - and CSV export
 

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  1. POEntity Framework - complex query - and CSV export
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    <p>A relatively simple task... I need to pull data from Database and export it to CSV file. The problem is that the data is queried from several joined tables and I'm not sure what is the best way to get data using EF and serialize it.</p> <p>My SQL query is:</p> <pre><code>select o.product, o.invoicenr, o.amount as quantity, o.price, o.shipping, o.vatrate, o.datecreated, os.title as [orderstatus],ps.title as [paymentstatus], pm.title as [paymentmethod], o.datepaid, o.dateinvoice, c.*, a.*, oos.trackingcode, oos.courier, oos.datecreated as [orderstatusdate], p.amout, p.transactionIdentifier, p.comment, p.datecreated as [paymentcreated] from [order] o inner join Address a on o.shipingaddressId = a.id inner join Customer c on o.customerId = c.id inner join OrderOrderStatus oos inner join OrderStatus os on oos.orderstatusId = os.id on o.id = oos.orderID inner join Payment p inner join PaymentStatus ps on p.paymentstatusId = ps.id inner join PaymentMethod pm on p.paymentmethodId = pm.id on o.id = p.orderId order by o.datecreated, o.id </code></pre> <p>Combined, there are 44 columns that should be returned. </p> <p>How can I replicate this query with LINQ? What is the best way to proceed with this task in general? </p> <p>Just for understanding: There is main table "Order" which is linked one-to-many with tables Address, Customer, OrderOrderStatus and Payment. Table Payment has one-to-many relationsships with PaymentStatus and PaymentMethod. Table OrderOrderStatus has one-to-many relationship with OrderStatus.</p> <p>Thanks!</p>
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    1. USlekso
    1. USlekso
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    1. COPlease show the class model with navigation properties. Most joins can be doen by nav properties. Also a first draft of what you tried would help.
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      1. POEntity Framework - complex query - and CSV export
      1. USGert Arnold
 

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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

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