2024 C# find a match in a list

C# find a match in a list

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WebJul 4, 2014 · 2. This basically gets every record in the MegaList which is also contained within the versionList. In this case x is an value in your MegaList, therefore we do a simple List<>.Contains () on the versionList with the x value. foreach (var m in MegaList.Where (x => versionList.Contains (x.ToLower ()))) { // do some action } WebJul 3, 2011 · 4 Answers. var productsPerType = from t in products.SelectMany ( p => p.Types, (p, t) => new { Product = p, TypeId = t.Id }) group t by t.TypeId into g select new …

c# - LINQ return items in a List that matches any Names (string) …

WebJan 20, 2024 · Use a HashSet instead of a List, that way you can look for a string without having to loop through the list. var setOfStrings = new HashSet {"Cars", … WebMar 2, 2024 · List refFiles = new List (); refFiles.Add ("AB_DBER_ [0-9] {13,13}.txt"); refFiles.Add ("AB_EBER_ [0-9] {13,13}.txt"); refFiles.Add ("AB_FBER_ [0-9] {13,13}.txt"); I wanted to do something like: foreach (var file in refFiles ) { //if file has a match in files then I need to do some code } blue\u0027s clues art appreciation wco tv

c# - Searching a List for an EXACT case insenitive …

WebNov 1, 2016 · In just LINQ to Objects, both should work.) To get the count, you'd need something like: var result = query.Select (x => new { x, count = x.tags.Count (tag => list.Contains (tag)) }) .Where (pair => pair.count != 0); Then each element of result is a pair of x (the item) and count (the number of matching tags). Share Improve this answer Follow WebJul 4, 2014 · To explain this in simple terms, MegaList is a list of programs running, I am checking this list of running programs by matching it to the versionList, if the running … WebList test3 = test1.Where (w => !test2.Contains (w)).ToList (); The query above works on an exact match but not partial matches. I have looked at other queries but I can find a close comparison to this with Linq. Any ideas or anywhere you can point me to would be a great help. c# linq Share Improve this question Follow clenergy datasheet

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

c# - Convert result of matches from regex into list of string

WebYou need this: myList.Where (listStrinEntry => myString.IndexOf (listStringEntry) != -1) Where: myList is List has the values that myString has to contain at any position. So de facto you search if myString contains any of the entries from the list. WebAdd a comment 3 Answers Sorted by: 23 The simplest way is to search each string individually: bool exists = s1.Any (s => s.Contains (s2)); The List.Contains () … clenergy cruiser solarWebDec 3, 2024 · You can check elements in a list or an array using a list pattern. A list pattern provides a means to apply a pattern to any element of a sequence. In addition, you can … clenea meairs

"WebAug 30, 2024 · List.FindAll (Predicate) Method is used to get all the elements that match the conditions defined by the specified predicate. Properties of List: It is different … " - C# find a match in a list

C# find a match in a list

WebApr 2, 2013 · What you want to do is Join the two sequences. LINQ has a Join operator that does exactly that: List first; List second; var query = from firstItem in … WebJun 6, 2013 · private List findDegreesLoop () { var list1 = new List (); var list2 = new List (); var list3 = new List (); foreach (var degree in list2) { var matches = list1.Where (q => …

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WebYou can use the Find method on the generic list class. The find method takes a predicate that lets you filter/search the list for a single item. List list = // … WebMar 11, 2016 · Searching a List for an EXACT case insenitive match. List list = new List (); list.Add ("Horse"); list.Add ("Shorse"): I want to search the list for a specific string, regardless of …

WebJan 14, 2014 · var lookfor = @"something (with) multiple (pattern) (groups)"; var found = Regex.Matches (source, lookfor, regexoptions); var captured = found // linq-ify into list .Cast () // flatten to single list .SelectMany (o => // linq-ify o.Groups.Cast () // don't need the pattern .Skip (1) // select what you wanted .Select (c => c.Value)); … Webin addition to Anthony answer Where () visit through all records and then return result (s) while Find () dont need to traverse through all records if predicate match with given predicate. so say you have List of Test class having id and name properties.

WebSep 30, 2024 · List.Find (Predicate) Method is used to search for an element which matches the conditions defined by the specified predicate and it returns the first occurrence of that element within the entire List. Properties of List: It is different from the arrays. A list can be resized dynamically but arrays cannot. WebYou can use find with a Predicate as follows: list.Find (x => x.Id == IdToFind); This will return the first object in the list which meets the conditions defined by the predicate (ie in my example I am looking for an object with an ID). Share Improve this answer Follow answered Dec 21, 2010 at 2:00 Greg Sansom 20.2k 6 58 76

WebAug 29, 2013 · At each point you are only returning a single match. Iterator blocks do not run to completion before returning content. There is no need to calculate the full set of matches in a collection. The only time Any() would run to completion is if it returned false - otherwise it would short-circuit the sequence at the first match. –

WebNov 21, 2013 · Finding all matching elements in a list c#. public class Foo { public int Id { get; set; } public Bar bar {get; set; } } public class Bar { public int Id { get; set;} } Now I … blue\u0027s clues a snowy day archiveWebJan 5, 2024 · This method is used to search for an element that matches the conditions defined by the specified predicate and returns the first occurrence within the entire Array. Syntax: public static T Find (T [] array, Predicate match); Here, T is the type of element of the array. Parameters: array: It is the one-dimensional, zero-based array to search. blue\u0027s clues arts and craftsWebJan 20, 2024 · Use a HashSet instead of a List, that way you can look for a string without having to loop through the list. var setOfStrings = new HashSet {"Cars", "Trucks", "Boats"}; Now you can use the Contains method to efficiently look for a match: var matchingVehicles = Vehicles.Where (v => setOfStrings.Contains (v.Name)); Share … cle need for speed underground clen engine bay cablesWebFeb 1, 2009 · update: if you really mean "StartsWith", then you could sort the list and place it into an array ; then use Array.BinarySearch to find each item - check by lookup to see if it is a full or partial match. Share Follow edited Feb 1, 2009 at 20:35 answered Feb 1, 2009 at 14:44 Marc Gravell 1.0m 260 2542 2883 1 blue\u0027s clues a snowy dayWebDec 26, 2010 · Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about Teams blue\u0027s clues arts and crafts vhs 1998 archiveWebSoftware Developer. 2003 - Aug 201310 years. I developed and support a program called Recon, which calculates expected reimbursement for Blue Cross, Medicare, Medicaid and managed care contracts ... clenergy cutter rail