c# - Combining multi coloumn failover logic into a single property in Entity Framework 4.1 -



c# - Combining multi coloumn failover logic into a single property in Entity Framework 4.1 -

i working on legacy enterprise database uses multiple columns retrieve part number sql utilize checks part number , if part number null checks kid part number best way of combining logic single ef model property (eg product.partnumber )

i invisible possible partnumber visible externally info api

if using code-first approach way projection in custom linq-to-entities query:

var products = context.products .select(p => new somenonmappedtype { id = p.id, // other fields partnumber = p.partnumber ?? p.child.partnumber // hope work });

if using edmx can utilize definingquery or queryview whole new entity readonly. more in another answer.

c# asp.net-mvc-3 entity-framework-4.1

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