WebFeb 22, 2012 · Here the SelectMany call takes a sequence of inputs (the lists which make the values of the dictionary) and projects each single input into another sequence of … Webdict = objectList.SelectMany (x => x.StringList) .Select (x => x.Split ('_')) .GroupBy (x => x [0]) .ToDictionary (x => x.Key, x => x.Select (g => g [1]).Distinct ().ToList ()); SelectMany retrieves all the StringList s and flattens them into one single list: "A_1", "B_1", ..., "F_1", "A_2", "B_2", ... Share Improve this answer

How to Use a Dictionary in C# - MUO

WebThese are the top rated real world C# (CSharp) examples of System.Collections.Dictionary.SelectMany extracted from open source projects. You … WebIn the above example, numberNames is a Dictionary type dictionary, so it can store int keys and string values. In the same way, cities is a Dictionary type dictionary, so it can store string … fivem shelby gt500

[Solved]-Flatten a C# Dictionary of Lists with Linq-LINQ,C#

WebNov 26, 2012 · LINQ and dictionaries LINQ is a very powerful technique for operating on collections of objects in .NET. If you for example have a collection of integers, it is a simple task to pick the even numbers from the collection using LINQ: C# int [] ints = new [] { 1, 3, 6, 8, 9, 10 }; IEnumerable evens = ints.Where (i => i % 2 == 0 ); WebApr 10, 2024 · Please remember that in C#, there’s an interface called IReadOnlyDictionary for read-only access to dictionary members. It’s useful when you don’t need to modify data and want to prevent accidental modifications to the collection. You can add items to a dictionary using the Add method or the index’s set … WebThe LINQ ToDictionary Method in C# is used to create a System.Collections.Generic.Dictionary from the System.Collections.Generic.IEnumerable according to the specified key selector. This method causes the query to be executed immediately. There are four overloaded … can i take money out of my 401k at age 57