This is one of those features in C# 7 that I truly wondered where I would ever find a use for. As it turns out, local functions are extremely useful indeed. Also called nested functions by some, these functions are nested within another parent function. It is obviously only within scope inside the parent function and adds a useful way to call code that otherwise wouldn't have any real purpose outside the parent function. Consider the PopulateStorageSpacesList() method:
private void PopulateStorageSpacesList()
{
List<KeyValuePair<int, string>> lstSpaces = new List<KeyValuePair<int, string>>();
BindStorageSpaceList((int)StorageSpaceSelection.NoSelection, "Select Storage Space"); void BindStorageSpaceList(int key, string value) ...
