EntityFramework Stored Proc Function Import is it possible to read async?

asynchronous c# entity-framework entity-framework-6 entity-framework-6.1

Question

I'm using EF 6.1.1 and Database First. When I import a stored proc into the edmx and generate the DBContext it looks like this:

return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction<TestSP_Result>("TestSP", params[]...)

That returns an ObjectResult< T >, which implements IDbAsyncEnumerable< T > so I'm doing this to read the data async:

 IDbAsyncEnumerable<T> enumerable = objectResult as IDbAsyncEnumerable<T>;
 IDbAsyncEnumerator<T> enumerator = enumerable.GetAsyncEnumerator();
 List<T> list = new List<T>();
 bool moreItems = await enumerator.MoveNextAsync(CancellationToken.None);

 while (moreItems)
 {
     list.Add(enumerator.Current);
     moreItems = await enumerator.MoveNextAsync(CancellationToken.None);
 }
 return list;

Is this really reading the data asynchronously? I attached the profiler and the actual SQL statement runs in the ExecuteFunction line, not when enumerating the results.

Is there a proper way to run a stored proc from the DBContext and read the results asynchronously?

1
7
9/17/2014 11:19:29 PM

Accepted Answer

How I do it:

var results = await ctx.Database.SqlQuery<TResult>("EXEC sp_foo {0}, {1}", p1, p2)
                  .ToArrayAsync();
15
9/17/2014 11:28:24 PM


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