C# order by another list
WebOct 5, 2014 · 89 Similar to List<> OrderBy Alphabetical Order, we want to sort by one element, then another. we want to achieve the functional equivalent of SELECT * from Table ORDER BY x, y We have a class that contains a number of sorting functions, and we have no issues sorting by one element. For example: WebJul 13, 2024 · C#. var arrayList = new ... So, actually, I need to order the list first by column and then by row values. Something similar to Custom Sort in Excel. ... [-1]) it removes another item in another order in the list. Help fixing minor bug in removal of adjacent duplicates in linked list in C. Copying lists in C # Advertise
C# order by another list
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Webvar hold = MyList.OrderBy (x => x.StartDate) .ThenByDescending (x => x.EndDate) .ToList (); You can also use query syntax and say: var hold = (from x in MyList orderby x.StartDate, x.EndDate descending select x).ToList (); ThenByDescending is an extension method on IOrderedEnumerable which is what is returned by OrderBy. WebJan 29, 2016 · C#: Sort one collection based on another one. In order to sort a collection of objects based on another list that contains the proper order, we can create an extension method that performs a `Join` between these two collections and pass a `func` as innerKeySelector argument to allow us to sort this collection based on whatever key we …
WebApr 7, 2024 · Innovation Insider Newsletter. Catch up on the latest tech innovations that are changing the world, including IoT, 5G, the latest about phones, security, smart cities, AI, … WebJan 2, 2024 · Sort and merge list based on another list. Here I'm merging a list to end of another list after sorting it according to another list.This should sort processdetails list …
WebNov 16, 2016 · 3 Answers Sorted by: 8 You can use Linq to order your users: using System.Linq; mylist.OrderBy (x => x.LastName); If you have same last names you can order users by middle name. If you have same middle names you can order users by first name: mylist.OrderBy (x => x.LastName).ThenBy (x => x.MiddleName).ThenBy (x => … WebJul 12, 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.
WebThis method performs a stable sort; that is, if the keys of two elements are equal, the order of the elements is preserved. In contrast, an unstable sort does not preserve the order of elements that have the same key. In query expression syntax, an orderby (Visual C#) or Order By (Visual Basic) clause translates to an invocation of OrderBy.
WebFeb 23, 2024 · If possible values range of Letter is much smaller than listA, then better consturct orders like this: foreach (string letter in listB.Select (x=>x.Letter)) { orders.Add (letter, listA.IndexOf (letter)); } Update If letters ' range are out of listA, and since OP want the out ones to be at the end: pass on the traditionWebMar 18, 2024 · In more detail - OrderBy is a Linq method which allows you to specify an inline function to determine how you would like to sort - in this instance it is simply sorting … pass on the truthWebNov 3, 2013 · since OrderBy returns IOrderedEnumerable you should do: lst = lst.OrderBy (p => p.Substring (0)).ToList (); you can also do the following: lst.Sort (); Share Improve this answer Follow answered Mar 14, 2011 at 7:48 scatman 14k 22 70 93 2 Note that List.Sort is an unstable sort, whereas OrderBy is stable. pass on your regardsWebJul 3, 2024 · I'm using C# on Framework 3.5. I'm looking to quickly sort a Generic List. For the sake of this example, let's say I have a List of a Person type with a property of lastname. ... List OrderBy Alphabetical Order. Ask Question Asked 14 years, 6 months ago. Modified 7 months ago. Viewed 773k times 481 I'm using C# on Framework 3.5. I'm ... tinsel trees wholesaleWebFeb 26, 2015 · List result = list.OrderBy (str => { int index = comparer.IndexOf (str); return index == -1 ? int.MaxValue : index; }).ToList (); Here is a long version which might be more readable for some. It's also more flexible since you can specify what happens with the not-contained items. passo pakwheelsWebJun 27, 2011 · var sorted = data.OrderBy (item => 1); // identity (stable) sort orderby = "Lastname asc, Firstname desc"; foreach (var key in orderby.Split (',').Select (clause => clause.Trim ())) { if (key.EndsWith (" desc", StringComparison.CurrentCultureIgnoreCase)) { key = key.Substr (0, key.Length - 5); sorted = data.ThenByDescending (dict => dict … pass on wisdom to other freshers翻译WebSep 15, 2024 · The next example demonstrates how to use the orderby descending clause in a LINQ query to perform a primary sort, in ascending order, and a secondary sort, in descending order. The strings are sorted primarily by length and secondarily by the first letter of the string. tinsel trickery