C# order list by another list
WebList data = new List { "A","B","A","C","B","C","D","E" }; List preferences = new List { "A","B","C" }; IEnumerable orderedData = data.OrderBy ( item => preferences.IndexOf (item)); This will put all items not appearing in preferences in front because IndexOf () returns -1. WebApr 30, 2010 · Daniel is nearly right, but an easy way to use the order of the incoming list is to order by the index of the ID in that list: public List GetMyTypes (List ids) { return (from myType in db.MyTypes where ids.Contains (myType.Id) orderby ids.IndexOf (myType.Id) select myType).ToList (); }
C# order list by another list
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WebJul 22, 2010 · Simplest way to order a list is to use OrderBy List objListOrder = source.OrderBy (order => order.OrderDate).ToList (); If you want to order by multiple columns like following SQL Query. ORDER BY OrderDate, OrderId To achieve this you can use ThenBy like following. WebMar 7, 2011 · 1. If you have a reference to the List object, use the Sort () method provided by List as follows. ClassInfoList.Sort ( (x, y) => x.BlocksCovered.CompareTo (y.BlocksCovered)); If you use the OrderBy () Linq extension method, your list will be treated as an enumerator, meaning it will be redundantly converted to a List, sorted …
WebMar 12, 2014 · Add a comment. 1. Step 1: Implement IComparer interface. public class SortByName : IComparer { public int Compare (Customer x, Customer y) { return x.Name.CompareTo (y.Name); } } Step 2: Pass an instance of the class that implements IComparer interface, as an argument to the Sort () method. SortByName … WebMay 24, 2012 · 1. Try using some linq. List itm = new List; //Fill itm with data //get selected item from control string selectedcategory = cboCatetories.SelectedItem; var itms = from BO in itm where itm.ItemCategory = selectedcategory select itm; itms now contains all items in that category. Share.
WebJan 29, 2016 · 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 want. [gist id=”c1b6681e3e04c0d1d928″] Example WebApr 7, 2016 · I would like my first list to be ordered like this: A, B, C, D, X, W. Actually the last two letters X and W doesn't matter how they are ordered, but they should be at the …
WebNov 20, 2024 · Using extension methods, first OrderBy the enum, ThenBy name. var sorted = list.OrderBy ( m => m.Sort ).ThenBy ( m => m.Name ); Share Improve this answer Follow answered Mar 10, 2010 at 2:59 tvanfosson 521k 98 699 794 Add a comment 5 Aside from the nice LINQ solutions, you can also do this with a compare method like you mentioned.
WebApr 2, 2013 · c# - Find items from a list which exist in another list - Stack Overflow Find items from a list which exist in another list Ask Question Asked 10 years ago Modified 2 years, 7 months ago Viewed 93k times 53 I have a List PropA { int a; int b; } and another List PropX { int a; int b; } groundwork inspections payWebMar 7, 2016 · 1 Answer. You can do select the index of the item, throw it into an anonymous object order by that and then select the string again : var res = kws .Select (a=>new {orderOf=order.IndexOf (a.fkp_keyword),val=a}) .OrderBy (a=>a.orderOf) .Select (a=>a.val) .ToList (); If you have items that are not in the list you are ordering by then they will be ... film baby driver tradus in romanaWebFeb 23, 2024 · Sorted by: 2 Assume value of Letter are within listA. It's worth considering redesigning the algorithm if the assumption is false. And it may depend on requirement of expected order the out of range ones. var sortedSamples = listB.OrderBy (x=>listA.IndexOf (x.Letter)); For better performance, cache the orders into a dictionary: film baby girl i want youWebOct 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: groundwork inspections made easyWebJan 2, 2024 · Here I'm merging a list to end of another list after sorting it according to another list.This should sort processdetails list according to the order in routeplans list if any item not present in processdetails list is found it should keep the order and add it to processdetails list. film babylone toulouseWebNov 16, 2016 · 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 => x.FirstName); Share Improve … film babylon berlin mediathekfilm baby john