Attribute lost with yield
- by Nelson
Here's an interesting one... There is some code that I'm trying to convert from IList to IEnumerable:
[Something(123)]
public IEnumerable<Foo> GetAllFoos()
{
SetupSomething();
DataReader dr = RunSomething();
while (dr.Read())
{
yield return Factory.Create(dr);
}
}
The problem is, SetupSomething() comes from the base class and uses:
Attribute.GetCustomAttribute(new StackTrace().GetFrame(1).GetMethod(), typeof(Something))
Yield ends up creating MoveNext(), MoveNext() calls SetupSomething(), and MoveNext() does not have the [Something(123)] attribute.
I can't change the base class, so it appears I am forced to stay with IList or implement IEnumerable manually (and add the attribute to MoveNext()). Is there any other way to make yield work in this scenario?
