Hey guys,
Is there anyway to make a dynamic fetch in entity framework 4
If you have some inheritcance where a and b inherit from c
Can you call one linq query to get a list of a, and b using the data set for c?
A:
Do you mean ...
context.C // all C's (including all A's and all B's)
context.C.OfType<A>() // all A's
context.C.OfType<B>() // all B's
Hightechrider
2010-10-18 02:20:51
Yes but can you cast context.C to type A in the first example
Kyle
2010-10-18 02:23:17
If you do `context.C.Cast<A>()` you'll get exceptions if any `C` isn't an `A`, e.g. any `B` would cause that. You need to filter using `OfType` to avoid that. If you wanted A's and B's but not any other types that derive from C you could `Concat` the A's and the B's into an `IEnumerable<C>`.
Hightechrider
2010-10-18 02:43:33