.net doesnt have a yield I dont know what to do

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Im getting an error converting this code. Please help cause in vb.net there is no yeild

VB

Public Function GetRoomUsersNames() As IEnumerable(Of String)
            ExpireUsers(userChatRoomSessionTimeout)
            For Each key As Object In RoomUsers.Keys
               yield Return Me.RoomUsers(key.ToString()).UserName
            Next

        End Function

how can I change that?

Posted 13-Feb-12 16:35pm

janwel

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Sergey Alexandrovich Kryukov 14-Feb-12 0:02am

What is the purpose of this code. Are you really implementing the iterator behavior? It looks like you simply returning the IEnumerable, but in this case RoomUsers.Values is already the result you need.

Do you really understand what is "yield" for?
--SA

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OriginalGriff · Answer 1 · 2012-02-13T21:04:00

Solution 1

Yield is syntactic sugar. Behind the scenes it returns an IEnumerator instance that handles the callbacks into your function. To do the lazy enumeration, you have to implement it yourself in VB.

Time to start reading: Use Iterators in VB Now[^]

Posted 13-Feb-12 21:04pm

OriginalGriff