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C# list contains all items in another list

WebFeb 1, 2009 · As I needed to check if there are items from a list in a (long) string, I ended up with this one: listOfStrings.Any (x => myString.ToUpper ().Contains (x.ToUpper ())); Or in vb.net: listOfStrings.Any (Function (x) myString.ToUpper ().Contains (x.ToUpper ())) Share Follow answered Oct 15, 2024 at 12:26 LiliumCandidum 61 8 Add a comment 2 WebSep 12, 2013 · @V.7 Because he only wants to know if one item in the list contains a substring. list.equals is not the correct tool for the job [ "abc", "def", "ghi" ] does contain "hi" the way the OP describes it. list.equals doesn't even take the correct datatypes. –

c# - Use LINQ to get items in one List<>, that are not in another List ...

WebDec 12, 2013 · So I have two lists: One of ObjectB (ListObjectB) and Another contains a list of id's of ObjectA (called ListOfIdsA). If this i want to get a list of ObjectB where ObjectB.ListOfObjectA is in the ListOfIdsA. My first (and wrong) approach was ListObjectB.Where (p=> ListOfIdsA.Contains (p.ListOfObjectA.Select (b=>b.Id))) WebOct 4, 2024 · t2.All (elem => t1.Contains (elem)) called All (=>Contains) I have varied 3 params: count of supersets length of subset variability in items All supersets were random length and contained items in range [0; Variability). Subsets had fixed length and contained items in range [0; Variability). small toys cars https://mcneilllehman.com

c# - Check if list contains item from other list in EntityFramework ...

WebMay 30, 2013 · And now result of my measurement. I generated 100 000 UserProfiles and 100 000 ids. Join took 32ms and .Where with .Contains took 2 minutes and 19 seconds! I used pure IEnumerable for this testing to prove my statement. If you use List instead of IEnumerable, .Where and .Contains will be faster. Anyway the difference is significant. WebAug 4, 2013 · 4 Answers Sorted by: 4 This takes each part of ListA and compares it with ListB with SequenceEqual: bool containsSameSequence = ListA .Where ( (item, index) => index <= ListA.Count - ListB.Count) .Select ( (item, index) => ListA.Skip (index).Take (ListB.Count)) .Any (part => part.SequenceEqual (ListB)); Demo WebMay 21, 2024 · Let's clear up any confusion you have related to the LINQ methods Any(), All() and Contains(). They're extremely useful for querying (asking questions about) your data. I'll first explain how they work at a high level and then give an example of each one. Important: All three of these methods return a boolean (true/false). Your result will ... small toys for 2 year old boys

c# - Does .NET have a way to check if List a contains all …

Category:C# LINQ: How to use Any(), All() and Contains() - Eamon Keane

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C# list contains all items in another list

c# - How to find if an element of a list is in another list? - Stack ...

WebMar 31, 2015 · How to find a string is already present in a list.For example i have a list that contains data now if i want to write the data in to another list during this i want to keep a condition whether the string is already present in the list.I am using the below code but its not working can you kindly help me C# WebAug 29, 2013 · The first approach uses a loop: bool isFound = false; foreach (item1 in list1) { if (list2.Contains (item1)) { isFound = true; break; } } The second one uses Linq directly: bool isFound = list1.Intersect (list2).Any (); The first one is long to write and not very straightforward/easy-to-read.

C# list contains all items in another list

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WebApr 13, 2024 · C# : Does .NET have a way to check if List a contains all items in List b?To Access My Live Chat Page, On Google, Search for "hows tech developer connect"So ... WebFeb 8, 2014 · I'll suggest: var searchIds = new List {1,2,3,4,5}; var result = persons.Where (p =&gt; p.Locations.Any (l =&gt; searchIds.Contains (l.Id))); Contains will be translated to IN statement. Keep in mind that the id list goes into the sql statement. If your id list is huge then you'll end up having a huge query. Share.

WebSep 5, 2024 · The fastest way time wise is to use HashSet&lt;&gt;, especially for large lists: private List Find (List list1, List list2) { var list2HashSet = list2.Select (x =&gt; x.Item).ToHashSet (); return list1.Where (x =&gt; !list2HashSet.Contains (x.Item)).ToList (); } WebApr 7, 2024 · I have a model with list items: public class Student{ public int StudentId { get; set; } public int ClassId { get; set; } } The table values are similar to the following: StudentId ClassI...

WebDec 13, 2024 · Using linq, how can I retrieve a list of items where its list of attributes match another list? Take this simple example and pseudo code: List listofGenres = new List () { "action", "comedy" }); var movies = _db.Movies.Where (p =&gt; p.Genres.Any () in listofGenres); c# linq Share Follow edited Dec 13, 2024 at 10:41 Luke Girvin

WebC# public bool Contains (T item); Parameters item T The object to locate in the List. The value can be null for reference types. Returns Boolean true if item is found in the List; otherwise, false. Implements Contains (T) Examples

WebIf you have a list and you want to know where within the list an element exists that matches a given criteria, you can use the FindIndex instance method. Such as . int index = list.FindIndex(f => f.Bar == 17); Where f => f.Bar == 17 is a predicate with the matching criteria. In your case you might write hii clothesWebFeb 28, 2024 · The ways to do this is by using a combination of Any and All. You need to check if all the elements of wordsToFind are substring of any elements in StringList bool result = wordsToFind.All (word => currentObject.StringList.Any (str => str.Contains (word)); This is for one object out of the list of Objects. You can again apply All to that list. hii clothingWebNov 9, 2011 · Here's a slightly less friendly O (n+m) solution. This should be used if superset is HUGE. It avoids repeatedly enumerating superset. HashSet hashSet = new HashSet (superset); bool contained = subset.All (i => hashSet.Contains (i)); Share Improve this answer Follow edited Jan 2, 2009 at 21:42 answered Jan 2, 2009 at 21:35 … small toys for 2 year olds