2024 C# find item in list by property

C# find item in list by property

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WebNov 19, 2011 · First, consider whether you even need these setters - if so, they should take a List, not just a string: set { _subHead = value; } These lines: newSec.subHead.Add ("test string"); Are calling the getter and then call Add on the returned List - the setter is not invoked. Share Follow answered Nov 19, 2011 at 18:13 Oded WebFeb 18, 2024 · In this article. This topic shows an example of how to perform a simple query over a list of Student objects. Each Student object contains some basic information about the student, and a list that represents the student's scores on four examinations.

c# - Find items from a list which exist in another list - Stack Overflow

WebExample: c# get index of item in list Array.IndexOf(arrName, searchingFor) WebMar 2, 2015 · I have the following objects defined: public class MyGroup { public MyItem[] Items; } public class MyItem { public int Val; } Say I have a list as List where each MyGroup object contains a varying number of MyItems; which in turn contains a varying value for Val. road construction labor union

c# - Finding an item within a list within another list? - Stack Overflow

WebJan 28, 2013 · The list HotelRooms has 10 items. I want to find the maximum value of AverageNightlyRate. ... we can Select() the property list we are interested in. Then we can slip in DefaultIfEmpty. Calling Min() or Max() ... c#; linq; or ask your own question. WebJun 26, 2013 · C# compare two Lists by one Property and change value of first List-2. Compare two struct List and find if item of list1 appears in item of list2 in C#. 1. How to search any items of a list within a string using Linq. 0. C# foreach to linq. 0. Fastest way to compare two List snap finance monthly payments

c# - Get the max. value in List of objects - Stack Overflow

c# - How to assign List or List to List

WebI have an interface (IAnimal) which is implemented by two classes, Bear and Goat.At runtime, I may end up with a List of Bears, Or Goats, but whichever it is they need to be assigned to property IEnumerable. This works, as IEnumerable is co-variant.. However, I now need to remove items from IEnumerable which of course does … WebJul 17, 2012 · You can OrderByDescending the List on the ActivationDate Field and then take FirstOrDefault () Product.OrderByDescending (p => p.ActivationDate).FirstOrDefault (); For a more simpler version there is an extension method MaxBy Product.MaxBy (p => p.ActivationDate); Share Follow edited Jul 17, 2012 at … snap finances phone numberWebYou can covert your list to a dictionary using Linq by calling the ToDictionary () extension method: IDictionary questions = _mQuestions.ToDictionary (q => q.id); This uses the ID of the Question object as the key, and the object as the value. Then in your code, you can do the following: snap finance missed payment

"WebJan 22, 2015 · myStaticList .Where(a=>a.bList .Where(b=>b.cList .Where(c=>c.CId == 12345) != null) != null) .something logical .Name = "Specific element in static list is now changed."; Please note that i want to change the property of that specific item in … " - C# find item in list by property

C# find item in list by property

c# - Compare Two Lists Via One Property Using LINQ - Stack Overflow

WebOct 18, 2016 · list.Find (i => i.Property == value); // C# 3.0+ list.Find (delegate (Item i) { return i.Property == value; }); // C# 2.0+. Both of these options return default (T) ( null for … WebJul 27, 2012 · Find within a Find List cars = new List (); List carWithParts = cars.Find (x => x.parts.Any (y => y.PartID=123)); This will work if multiple cars could contain the same PartID. Share Improve this answer Follow answered Jul 27, 2012 at 17:11 Matthew 24.3k 8 75 108 Add a comment 0

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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 = // ..; CompareDesignGroup item = list.Find (c => c.FieldId == "SomeFieldId"); item will be null if there is no matching item in the list. WebYou don't actually need LINQ for this because List provides a method that does exactly what you want: Find. Searches for an element that matches the conditions defined by the specified predicate, and returns the first occurrence within the entire List. Example code: PricePublicModel result = pricePublicList.Find(x => x.Size == 200);

WebApr 2, 2013 · PropA { int a; int b; } and another List PropX { int a; int b; } Now i have to find items from List which exist in List matching b property using lambda or LINQ. c# linq collections lambda Share Improve this question Follow edited Apr 2, 2013 at 16:46 Michael Myers ♦ 188k 45 291 292 asked Apr 2, 2013 at 16:45 donstack WebList items = getItems (); How can I use LINQ to return the single "Item" object which has the highest ID? If I do something like: items.Select (i => i.ID).Max (); I'll only get the highest ID, when what I actually want returned is the Item object itself which has the highest ID? I want it to return a single "Item" object, not an int. c# linq

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 WebUsing properties, you would search for items in the list like this MyClass result = list.Find (x => x.Id == "xy"); You can also use auto-implemented properties if you need a read-only property: public string Id { get; private set; } This enables you to set the Id within the class but not from outside.

WebJan 3, 2024 · Using List.FindIndex () Method. This method returns the occurrence of the first element mentioned in the predicate and returns -1 if no element satisfies the condition. …

WebAug 25, 2011 · Just to add to CKoenig's response. His answer will work as long as the class you're dealing with is a reference type (like a class). If the custom object were a struct, this is a value type, and the results of .FirstOrDefault will give you a local copy of that, which will mean it won't persist back to the collection, as this example shows:. struct MyStruct { … snap finance phone number ukWebC# Dictionary Versus List Lookup Time Both lists and dictionaries are used to store collections of data. A Dictionary int, T > and List T > are similar, both are random access … snap finance performance shopsWebMay 27, 2009 · If this is a array or List, then LINQ to Objects has no choice but to sort the entire collection first before selecting the first item. In this case it will be slower than the other solution suggested. However, if this is a LINQ to SQL table and DateOfBirth is an indexed column, then SQL Server will use the index instead of sorting all the rows. snap finance motorcycle partsWebJun 11, 2024 · There are a few ways (note that this is not a complete list).. Single will return a single result, but will throw an exception if it finds none or more than one (which may or may not be what you want):. string search = "lookforme"; List myList = new List(); string result = myList.Single(s => s == search); snap finance salt lake cityWebMar 3, 2024 · 5 Answers Sorted by: 143 You can use the Enumerable.Where extension method: var matches = myList.Where (p => p.Name == nameToExtract); Returns an IEnumerable. Assuming you want a filtered List, simply call … snap finance no credit checkWebNov 17, 2015 · c# - Find objects in a list where one property contains duplicate values - Stack Overflow Find objects in a list where one property contains duplicate values [duplicate] Ask Question Asked 7 years, 4 months ago Modified 1 year, 10 months ago Viewed 5k times 2 This question already has answers here: snap finance personal loansWebThe following example demonstrates the usage of the Contains () method: 2. Using List.IndexOf () method. Another good solution is to use the List.IndexOf () method that … snap finance salt lake city ut