C# filter list of objects by property

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WebJan 29, 2009 · So to find the distinct values using just the Id property, you could use: var query = people.DistinctBy (p => p.Id); And to use multiple properties, you can use anonymous types, which implement equality appropriately: var query = people.DistinctBy (p => new { p.Id, p.Name }); Untested, but it should work (and it now at least compiles). WebArray#filter, just for filtering an array with conditions, Object.keys for getting all property names of the object, Array#some for iterating the keys and exit loop if found, String#toLowerCase for getting comparable values, String#includes for checking two string, if one contains the other.

How to filter list with objects in C#? - Stack Overflow

Webi have a list of project objects: IEnumerable projects a Project class as a property called Tags. this is a int[] i have a variable called filteredTags which is also a int[]. So lets say my filtered tags variable looks like this: int[] filteredTags = new int[]{1, 3}; WebMay 17, 2024 · 4 Answers Sorted by: 5 You can try this to get categories with those products that their status is true var newCategories = categories.Select ( i => new Category { Id = i.Id, Status = i.Status, Products = i.Products.Where (p => p.Status).ToList () }) .ToList (); EDIT If you add a constructor for your Category class like this: elixir of dream vision

c# - Filter a list of objects based on a property existing in another ...

WebI have a List of objects; I want to filter this list by the first letter in a string property of the objects. public class MyObject { public string Name { get; set; } public MyObject(){} } I am using a LINQ query: Web9 Answers Sorted by: 297 If you're using C# 3.0 you can use linq, which is way better and way more elegant: List myList = GetListOfIntsFromSomewhere (); // This will filter ints that are not > 7 out of the list; Where returns an // IEnumerable, so call ToList to convert back to a List. WebApr 20, 2016 · Im writing a filtering system which will filter a list by any of the properties of the class at runtime. Im planning on that building up some kind of whereclause to filter the lists (i know i could hit the server to get the list i need, but currently want to just filter the data i already have) for better prospects

.net - Filter linq list on property value - Stack Overflow

Filtering collections in C# - Stack Overflow

WebSep 12, 2024 · Filter Object List by Property which is a integer list. Class MyClass { string Name ; List scoreList; //this contains integer values } I have a code to fill object list of above class type from database. Now I want to filter object list (newList) as any value (s) of property scoreList in filterList values. WebSep 1, 2008 · If you already have the list of objects you can remove all not found in the int list, leaving just matches in objList. objList.RemoveAll (x => !intList.Contains (x.id)); Share Improve this answer Follow edited Sep 30, 2009 at 5:04 sth 220k 53 278 365 answered Sep 29, 2009 at 11:31 Henryk 1,109 1 10 16 Add a comment 6 for better or worse season 6 123moviesWebDec 16, 2024 · I have a list of objects which contain a DateTimeOffset property. I want to filter that list so that only objects whose date match one from another list of dates. For example if the list of objects contain the following date time property: {Test1, 12/1/2024}, {Test2, 12/2/2024}, {Test3, 12/3/2024} and another list. 12/1/2024 12/2/2024. Only for better shops.com

"WebNov 4, 2015 · You can do that with a lambda. List houseOnes = houses.FindAll (house => house.Name == "House 1"); Basically you have to tell it what you want to … " - C# filter list of objects by property

C# filter list of objects by property

Filtering collections in C# - Stack Overflow

WebAug 6, 2015 · 5 Answers Sorted by: 216 If you want to avoid using a third-party library, you could do something like: var bar = fooArray.GroupBy (x => x.Id).Select (x => x.First ()).ToList (); That will group the array by the Id property, then select the first entry in the grouping. Share Improve this answer Follow edited Sep 29, 2024 at 9:39 Daniel Lord WebNov 25, 2016 · 1) List collection 2) String PropertyName 3) String FilterString The idea is we pass a collection of Objects, the name of the property of the object and a Filter Criteria and it returns back a list of Objects where the property contains the FilterString.

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WebNov 4, 2015 · List houseOnes = houses.Where (house => house.Name == "House 1").ToList (); Note here you have to call ToList in order to get a list. Without that you'd have an IEnumerabl and it wouldn't actually do the comparisons until you iterated it (which the ToList does). WebDec 31, 2024 · You can write YEAR, MAKE or MODEL"); var byWhat = Console.ReadLine (); Console.WriteLine ("And what is the search term?"); var term = Console.ReadLine (); List filtered = new List (); if (byWhat == "YEAR") { int whatYear = int.Parse (term); foreach (var car in cars) { if (car.Year == whatYear) filtered.Add (car); } } else if (byWhat == ...) { ... …

WebApr 7, 2024 · New List filtered Foreach object o in myObjectList If o.POne, o.PTwo or o.PThree contains string "test" filtered.Add (o) Else Next I tried to adapt the code from this post, but could not get a working. Another thought would be to create a nested list with all property values. In that scenario I get the filtering working with the following line: WebDec 16, 2009 · List filteredList = new List (); for (int i = 0; i < cars.Length; i++) { if (cars [i].IsAvailable) filteredList.Add (cars [i]); } Car [] filtered = filteredList.ToArray (); Share Improve this answer Follow answered Dec 16, 2009 at 3:49 LorenVS 12.5k 10 46 54 Add a …

WebMay 24, 2012 · 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 Improve this answer Follow answered May 24, 2012 at 22:03

WebJun 18, 2015 · Both are linked through the property PersonId. I need to create a filter for the list of PersonResult that meet certain criteria for the Person (e.g. Person.Gender == …

WebJun 7, 2016 · Summary. You should use parameters to filter queries in a secure manner. The process of using parameter contains three steps: define the parameter in the SqlCommand command string, declare the SqlParameter object with applicable properties, and assign the SqlParameter object to the SqlCommand object. elixir of eternal lifeWebMar 28, 2024 · 9 Answers Sorted by: 111 Try a simple where query var filtered = unfilteredApps.Where (i => !excludedAppIds.Contains (i.Id)); The except method uses equality, your lists contain objects of different types, so none of the items they contain will be equal! Share Improve this answer Follow answered Mar 21, 2013 at 6:33 ColinE … elixir of frost power tbcWebMar 21, 2012 · Here's one that gets you lists that contain at list one item matching Name = "ABC" and Action = "123". var newList = myList.Where (l => l.Exists (i => i.Name == "ABC" && i.Action == "123")).ToList (); If you need only … for better or worse vowsWebJun 18, 2015 · I have two lists of objects Person and PersonResult.Both are linked through the property PersonId.I need to create a filter for the list of PersonResult that meet certain criteria for the Person (e.g. Person.Gender == "female").. Im currently using the following LINQ query to achieve this: elixir of healing power recipeWebMay 17, 2024 · 4 Answers Sorted by: 5 You can try this to get categories with those products that their status is true var newCategories = categories.Select ( i => new Category { Id = i.Id, Status = i.Status, Products = i.Products.Where (p => p.Status).ToList () }) … elixir of hemostasis bdoWebTo filter a list based on a condition that involves checking whether an element in the list starts with any of the elements in another list, ... Sort a List by object property in C#; Parse command line arguments in C#; Get the URL of the current page in C#; forbetty me.comWebApr 28, 2024 · 1 Answer Sorted by: 3 You might use Contains method for that var result = containers.Where (x => containerIds.Contains (x.Id)); Another option is to use Any Linq method var result = containers.Where (x => containerIds.Any (i => i == x.Id)); Share Improve this answer Follow answered Apr 28, 2024 at 16:06 Pavel Anikhouski 21.3k 12 52 63 … elixir of healing power wow tbc