ILookup<TKey, TVal> vs. IGrouping<TKey, TVal>...

Empty ILookup<K, T>...

Creating ILookups...

How to get value from IGrouping where key and value in object match...

How can interface IGrouping<out TKey, out TElement> yield multiple values?...

C# Lookup ptimisation suggestion are welcome...

ILookup store item under multiple keys...

What's the best way to split a list of strings to match first and last letters?...

Linq: Create empty IGrouping...

Does .GroupBy() guarantee order in its groupings?...

filter linq lookup based on values...

Linq - convert an ILookup into another ILookup...

Is there a way to flatten a .Net ILookup<TKey, TElement> into a List<TElement>?...

LINQ Convert from IGrouping to Lookup...