c# - Add items to list from linq var - Stack Overflow Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey, Sometimes when modifying properties in a foreach loop, the changes do not remain. 8 Answers. Also, Linq is only used here to loop over the collection, just like wudzik's answer. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. There's not a single query in LINQ that modifies the queried collection (hence "query"). I need to store the rank because the price may change afterward. I think you try to add a complete list instead of a single CheckItems instance. When do you use in the accusative case? It should not be hard to analyze the complexity of this. WebYou can try LINQ. 1. If you need to add any IEnumerable collection of elements to the list you need to use AddRange. { dont forget the return syntax it took me one hour, Very neat! You are essentially doing a join and then an update. But then, at this point, you're better off (with less typing) doing it the "clear" way: This is shorter, very clear in its intent, and very clean. The property value is not changed. Certainly, foreach is the right way. It's also a violation of the expectations involved with LINQ - LINQ is about querying, which suggests there shouldn't be side effects when using LINQ, and the entire purpose here is to create side effects. Using LINQ to change values in collection - Stack Overflow See below for arguments against it. When do you use in the accusative case? You really shouldn't use LINQ to perform side effects. Not the answer you're looking for? Which reverse polarity protection is better and why? (from c in listOfCompany where c.id == 1 select c).First ().Name = "Whatever Name"; For Multiple updates. c# - conditional Updating a list using LINQ - Stack Overflow Not the answer you're looking for? Can my creature spell be countered if I cast a split second spell after it? Why did DOS-based Windows require HIMEM.SYS to boot? Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? Is there any known 80-bit collision attack? Connect and share knowledge within a single location that is structured and easy to search. I don't think this would help. 10 : (tl.name == "marks" ? Asking for help, clarification, or responding to other answers. What positional accuracy (ie, arc seconds) is necessary to view Saturn, Uranus, beyond? Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey, how to add more than one result to the list using a linq query, Concat all strings inside a List using LINQ, Using LINQ to remove elements from a List. It's better to operate on List. Connect and share knowledge within a single location that is structured and easy to search. I didn't know either Single() or SingleOrDefault(). Simple deform modifier is deforming my object. Without digging into what your actual conversion function is doing. The best answers are voted up and rise to the top, Not the answer you're looking for? I don't have a C# compiler here but maybe AddRange instead of Add works: If the null hypothesis is never really true, is there a point to using a statistical test without a priori power analysis? Has the Melford Hall manuscript poem "Whoso terms love a fire" been attributed to any poetDonne, Roe, or other? Doing changes must be done in other logic. What were the most popular text editors for MS-DOS in the 1980s? If you want to create a new List with each element set to a value, you can do this: If you really want to do it using ForEach/LINQ, it's possible to abuse Select (but I don't recommend it): Can you describe some use cases of how you propose to use the said delegate? Generic Doubly-Linked-Lists C implementation. UPDATE This can be simplified to be listOf rev2023.5.1.43405. Why refined oil is cheaper than cold press oil? Set list property value using LINQ ForEach. Use .ToList () in order to convert query in list that you can work with. Does a password policy with a restriction of repeated characters increase security? Interpreting non-statistically significant results: Do we have "no evidence" or "insufficient evidence" to reject the null? Which was the first Sci-Fi story to predict obnoxious "robo calls"? Which method performs better: .Any() vs .Count() > 0? MathJax reference. Making statements based on opinion; back them up with references or personal experience.

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