The System.ToLookup method in C# is used to create a lookup collection, which is a dictionary-like data structure that allows multiple values to be associated with a single key. It takes an enumerable collection as input and returns a lookup object where each key is associated with a collection of values from the input collection. This method is useful when you need to group data based on a specific key and retrieve all the associated values efficiently.
C# (CSharp) System.ToLookup - 22 examples found. These are the top rated real world C# (CSharp) examples of System.ToLookup extracted from open source projects. You can rate examples to help us improve the quality of examples.