I want to subclass FolderItem (or maybe TextInputStream, I'm not
sure) and add a LineCount method to it. There are a number of places
where I need to know how many lines a text file has. However, the way
I'm doing this doesn't seem to work. For instance, if I subclass
FolderItem as MyFolderItem and add a LineCount method to it, how do I
use it when the built-in classes return FolderItems? First I tried
casting:
dim newFile as new FolderItem = App.AppSupportFolder.Child(fileName)
dim lines as Integer = MyFolderItem(newFile).LineCount
But I got an illegal cast error at compile. Then I tried to dim
newFile as a MyFolderItem, but RB won't let me assign the results of
the Child method to anything but a FolderItem.
Is there a better way to do this?
Thanks,
Chuck Ross
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