C# foreach multiple lists

Author: dtlb

August undefined, 2024

WebSep 3, 2008 · static SortedDictionary.KeyCollection FindCommon (List> items) { SortedDictionary current_common = new SortedDictionary (), common = new SortedDictionary (); foreach (List list in items) { if (current_common.Count == 0) { foreach (T item in list) { common [item] = true; } } else { foreach (T item in list) { if … WebDec 22, 2015 · foreach (var tuple in list1.Zip (list2, (first, second) => new { object1 = first, object2 = second }) .Zip (list3, (first, second) => new { object1 = first.object1, object2 = first.object2, object3 = second })) { //do stuff } This works fine and is quite readable, unless the number of lists is not big.

c# - How to add multiple predicates of type Func , bool> to a …

WebApr 14, 2024 · string[] fruits = input.Split(delimiterChars, 3); foreach (string fruit in fruits) {. Console.WriteLine(fruit); } } } We use the Split method to split a string into an array of substrings based on an array of delimiter characters. We limit the number of substrings returned to 3 and output each element to the console. WebJun 20, 2024 · A foreach loop enumerates one list. If you have three separate lists then you need to create one list from them first, which can then be enumerated. The simplest way to do that is the Enumerable.Concat extension method: foreach (Button btn in appList.Concat (sequenceLsit).Concat (FunctionList)) Share Improve this answer Follow steak shop catering

Reduce multiple foreach loops in code C# - Stack Overflow

WebDec 20, 2010 · 14 Answers Sorted by: 586 You can use the LINQ Concat and ToList methods: var allProducts = productCollection1.Concat (productCollection2) .Concat (productCollection3) .ToList (); Note that there are more efficient ways to do this - the above will basically loop through all the entries, creating a dynamically sized buffer. WebSep 18, 2013 · 6 Answers Sorted by: 345 foreach: foreach (var money in myMoney) { Console.WriteLine ("Amount is {0} and type is {1}", money.amount, money.type); } MSDN Link Alternatively, because it is a List .. which implements an indexer method [], you can use a normal for loop as well.. although its less readble (IMO): WebMay 13, 2016 · foreach (var outlet in merchant.Outlets) { if (outlet != null) { foreach (var terminal in merchant.Terminals) { if (terminal != null) { foreach (var agreement in terminal.AssociateAgreements) { var bankInfo = new Bank (); if (agreement != null) { bankInfo.UniqueID = AgreementUniqueCode + agreement.ID; bankInfo.BankBIC = … steak shish kabob recipe grill

c# - Iterate over multiple lists - Stack Overflow

WebApr 14, 2024 · The following steps must be followed to use multiple GET APIs in a single MVC view. Step 1. The initial step is to create a model to store the information collected from the APIs. AclassThe Model's properties must align with the information the APIs have returned. A new or existing class can be created to represent this Model. WebIt turned out there were four options for solving this: List+aggregate (@Marcel Gosselin), List+foreach (@JaredPar, @Gabe Moothart), HashSet+aggregate (@jesperll) and HashSet+foreach (@Tony the Pony). I did some performance testing on these solutions (varying number of lists, number of elements in each list and random number max size. steak shakes and cakesWebYou can do what foreach does under the hood, but with two enumerators: using (var e1 = list1.GetEnumerator ()) using (var e2 = list2.GetEnumerator ()) { while (e1.MoveNext () && e2.MoveNext ()) { var item1 = e1.Current; var item2 = e2.Current; // use item1 and item2 } } steak sides crossword clue

"WebJun 23, 2024 · foreach (var item in numbers.Zip (words)) Console.WriteLine ($" {item.First}, {item.Second}"); The other overload (which appeared earlier than Core 3.0) takes a mapping function, giving you more control over the result. This example returns a sequence of strings, but you could return a sequence of whatever (e.g. some custom class). " - C# foreach multiple lists

C# foreach multiple lists

WebAug 5, 2024 · C# List ForEach LINQ SYNTAX: USING FOREACH () WITH COLLECTIONS August 05, 2024 by Bradley Wells In this tutorial, you will learn how to use the ForEach method on Lists and other LINQ collections. This allows you to compactly write, on a single line of code, that which otherwise would take at least four lines. Initial Setup WebExample 1 – C# List.ForEach () List.ForEach () function accepts an Action and executes for each element in the list. In the following program, we have a list with three numbers. We shall execute a delegate function, which gets the list element as argument, and executes the set of statements in its body, for the list element.

Did you know?

WebMar 7, 2024 · The collection you created uses the List type. This type stores sequences of elements. You specify the type of the elements between the angle brackets. One important aspect of this List type is that it can grow or shrink, enabling you to add or remove elements. Add this code at the end of your program: WebJan 23, 2024 · A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.

WebYou can adjust the implementation depending on how you want to handle the case where the two enumerations (or lists) have different lengths; this one continues to the end of the longer enumeration, returning the default values … WebMar 3, 2016 · Using Linq instead of multiple foreach loops. A project I'm working on often has lists within lists within lists etc. The original author often uses complicated linq expressions, but when adapting them I mostly get hopelessly bogged down and resort to foreach's which makes me feel like a lesser being (joke).

WebJun 28, 2024 · With this expression we can update one value in multiple items of a list: listOfCompany.Where(c=> c.id == 1).ToList().ForEach(cc => cc.Name = "Whatever Name"); Is it possible to update more than one value? Is this more efficient that implementing a foreach structure and set the multiple values in it? WebMar 13, 2016 · public static IEnumerable Cartesian (this IEnumerable items) { var slots = items // initialize enumerators .Select (x => x.GetEnumerator ()) // get only those that could start in case there is an empty collection .Where (x => x.MoveNext ()) .ToArray (); while (true) { // yield current values yield return slots.Select (x => x.Current); // increase …

WebDec 15, 2011 · Edit - Iterating whilst positioning at the same index in both collections. If the requirement is to move through both collections in a 'synchronized' fashion, i.e. to use the 1st element of the first collection with the 1st element of the second collection, then 2nd with 2nd, and so on, without needing to perform any side effecting code, then see @sll's …

Webvar nameList = new List(); foreach (user in users) {nameList.Add(user.Name);} return nameList; With a LINQ query, you can extremely shorten the required code to this: return users.Select(u => u.Name).ToList(); Once you understand and can utilize LINQ queries, I guarantee you, that your code will gain much more readability. steak sides crosswordWebMay 15, 2015 · C# FOREACH on multiple LIST<> types. 4. List of Objects with int property compared to List of Int. 0. Multiple foreach loops in razor. Hot Network Questions "Communism in the Soviet Union, China, etc., wasn't real communism" - is that true? steak shack tysonsWeb44. Highly recommend something more like this: public class Person { public string Name {get; set;} public string Email {get; set;} } var people = new List (); Easier to read, easy to code. Share. Improve this answer. Follow. answered Aug 3, 2009 at 12:49. steak shish kabob recipesWebFeb 6, 2014 · The IQueryable.ToQueryString method introduced in Entity Framework Core 5.0 may help with this scenario, if you are willing to have some raw SQL appearing in your code. This method will generate SQL that can be included in a raw SQL query to perform a bulk update of records identified by that query. For example: steak smoothieWebOct 7, 2024 · I need to concatenate multiple dynamic lists together. The code below is nested within another foreach loop that determines how many items are in units. Each time the loop is entered I want to create a new totalOrderedList and concatenate it to the totalSumAllOrderedLists. steak sirloin in air fryerWebThe foreach take the item in the listm (10$) and insert it in the equation. fibo2 = (10 - 6 )/ (8 - 6) fibo2 = 2 fibo2 is process in the rest of the code which is too long to be copy/paste here. At the end of the code nearclose return a number, lets say 9$. steak shoppe christies beachWebBack to: C#.NET Tutorials For Beginners and Professionals Parallel Foreach Loop in C#. In this article, I am going to discuss the Parallel Foreach Loop in C# with Examples. As we already discussed in our previous article that the Task Parallel Library (TPL) provides two methods (i.e. Parallel.For and Parallel.Foreach) which are conceptually the “for” and “for … steak shish kebab recipe